def create_header_demod_blocks(self):
     self.hdr_fft = fft.fft_vcc(self.fft_len, True, (), True, 1)
     self.chanest = digital.ofdm_chanest_vcvc(self.sync_words[0],
                                              self.sync_words[1], 1, 0, 3,
                                              False)
     hdr_equalizer = digital.ofdm_equalizer_simpledfe(
         self.fft_len, self.header_const.base(), self.occupied_carriers,
         self.pilot_carriers, self.pilot_symbols)
     self.hdr_frame_eq = digital.ofdm_frame_equalizer_vcvc(
         hdr_equalizer.base(), self.cp_len, self.rx_length_tag_key, True, 1)
     self.hdr_serializer = digital.ofdm_serializer_vcc(
         self.fft_len, self.occupied_carriers, self.rx_length_tag_key, "",
         0, "", True)
     self.hdr_const_decoder = digital.constellation_decoder_cb(
         self.header_const.base())
     header_formatter = digital.packet_header_ofdm(
         self.occupied_carriers,
         1,
         self.len_tag_key,
         frame_len_tag_key=self.rx_length_tag_key,
         bits_per_header_sym=self.header_const.bits_per_symbol(),
         bits_per_payload_sym=self.payload_const.bits_per_symbol(),
         scramble_header=False)
     self.hdr_parser = digital.packet_headerparser_b(
         header_formatter.base())
 def test_002_pipe(self):
     """
     Create N packets of random length, pipe them through header generator,
     back to header parser, make sure output is the same.
     """
     N = 20
     header_len = 32
     packet_len_tagname = "packet_len"
     packet_lengths = [random.randint(1, 100) for x in range(N)]
     data, tags = tagged_streams.packets_to_vectors(
         [list(range(packet_lengths[i])) for i in range(N)],
         packet_len_tagname)
     src = blocks.vector_source_b(data, False, 1, tags)
     header_gen = digital.packet_headergenerator_bb(header_len,
                                                    packet_len_tagname)
     header_parser = digital.packet_headerparser_b(header_len,
                                                   packet_len_tagname)
     sink = blocks.message_debug()
     self.tb.connect(src, header_gen, header_parser)
     self.tb.msg_connect(header_parser, "header_data", sink, "store")
     self.tb.start()
     time.sleep(1)
     self.tb.stop()
     self.tb.wait()
     self.assertEqual(sink.num_messages(), N)
     for i in range(N):
         msg = pmt.to_python(sink.get_message(i))
         self.assertEqual(msg, {
             'packet_len': packet_lengths[i],
             'packet_num': i
         })
 def test_004_ofdm_scramble(self):
     """
     Test scrambling for OFDM header gen
     """
     header_len = 32
     packet_length = 23
     packet_len_tagname = "packet_len"
     frame_len_tagname = "frame_len"
     data, tags = tagged_streams.packets_to_vectors([range(packet_length),range(packet_length),], packet_len_tagname)
     src = blocks.vector_source_b(data, False, 1, tags)
     header_formatter = digital.packet_header_ofdm(
             (range(32),), # 32 carriers are occupied (which doesn't matter here)
             1,         # 1 OFDM symbol per header (= 32 bits)
             packet_len_tagname,
             frame_len_tagname,
             "packet_num",
             1,         # 1 bit per header symbols (BPSK)
             2,          # 2 bits per payload symbol (QPSK)
             scramble_header=True
     )
     header_gen = digital.packet_headergenerator_bb(header_formatter.base())
     header_parser = digital.packet_headerparser_b(header_formatter.base())
     sink = blocks.message_debug()
     self.tb.connect(src, header_gen, header_parser)
     self.tb.msg_connect(header_parser, "header_data", sink, "store")
     self.tb.start()
     time.sleep(1)
     self.tb.stop()
     self.tb.wait()
     msg = pmt.to_python(sink.get_message(0))
     self.assertEqual(msg, {'packet_len': packet_length, 'packet_num': 0, 'frame_len': 4})
     msg = pmt.to_python(sink.get_message(1))
     self.assertEqual(msg, {'packet_len': packet_length, 'packet_num': 1, 'frame_len': 4})
 def test_001_t (self):
     """
     First header: Packet length 4, packet num 0
     Second header: Packet 2, packet num 1
     Third header: Invalid (parity bit does not check) (would be len 4, num 2)
     """
     encoded_headers = (
         #   | Number of bytes                    | Packet number                                  | Parity
             0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  1, 0, 0, 0,
             0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  0, 0, 0, 0,
             0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,  0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  1, 0, 0, 0
     )
     packet_len_tagname = "packet_len"
     random_tag = gr.tag_t()
     random_tag.offset = 5
     random_tag.key = pmt.string_to_symbol("foo")
     random_tag.value = pmt.from_long(42)
     src = blocks.vector_source_b(encoded_headers, tags=(random_tag,))
     parser = digital.packet_headerparser_b(32, packet_len_tagname)
     sink = blocks.message_debug()
     self.tb.connect(src, parser)
     self.tb.msg_connect(parser, "header_data", sink, "store")
     self.tb.start()
     time.sleep(1)
     self.tb.stop()
     self.tb.wait()
     self.assertEqual(sink.num_messages(), 3)
     msg1 = pmt.to_python(sink.get_message(0))
     msg2 = pmt.to_python(sink.get_message(1))
     msg3 = pmt.to_python(sink.get_message(2))
     self.assertEqual(msg1, {'packet_len': 4, 'packet_num': 0, 'foo': 42})
     self.assertEqual(msg2, {'packet_len': 2, 'packet_num': 1})
     self.assertEqual(msg3, False)
Example #5
0
    def __init__(self, ipp1="127.0.0.1", ipp2="127.0.0.1", ipp3="127.0.0.1", ipp4="127.0.0.1", iptx="127.0.0.1", samp_rate=10000):
        gr.top_block.__init__(self, "OFDM Rx")

        ##################################################
        # Parameters
        ##################################################
        self.ipp1 = ipp1
        self.ipp2 = ipp2
        self.ipp3 = ipp3
        self.ipp4 = ipp4
        self.iptx = iptx
        self.samp_rate = samp_rate

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((1, 1, 1, -1,),)
        self.pilot_carriers = pilot_carriers = ((-21, -7, 7, 21,),)
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) + range(8, 21) + range(22, 27),)
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.sync_word2 = sync_word2 = [0j, 0j, 0j, 0j, 0j, 0j, (-1+0j), (-1+0j), (-1+0j), (-1+0j), (1+0j), (1+0j), (-1+0j), (-1+0j), (-1+0j), (1+0j), (-1+0j), (1+0j), (1+0j), (1 +0j), (1+0j), (1+0j), (-1+0j), (-1+0j), (-1+0j), (-1+0j), (-1+0j), (1+0j), (-1+0j), (-1+0j), (1+0j), (-1+0j), 0j, (1+0j), (-1+0j), (1+0j), (1+0j), (1+0j), (-1+0j), (1+0j), (1+0j), (1+0j), (-1+0j), (1+0j), (1+0j), (1+0j), (1+0j), (-1+0j), (1+0j), (-1+0j), (-1+0j), (-1+0j), (1+0j), (-1+0j), (1+0j), (-1+0j), (-1+0j), (-1+0j), (-1+0j), 0j, 0j, 0j, 0j, 0j]
        self.sync_word1 = sync_word1 = [0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 0., 0., 0., 0., 0.]
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(fft_len, payload_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols, 1)
        self.packet_len = packet_len = 96
        self.header_formatter = header_formatter = digital.packet_header_ofdm(occupied_carriers, n_syms=1, len_tag_key=packet_length_tag_key, frame_len_tag_key=length_tag_key, bits_per_header_sym=header_mod.bits_per_symbol(), bits_per_payload_sym=payload_mod.bits_per_symbol(), scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(fft_len, header_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols)

        ##################################################
        # Blocks
        ##################################################
        self.zeromq_push_msg_sink_0 = zeromq.push_msg_sink("tcp://" + ipp3 + ":55530", 100)
        self.zeromq_pull_source_0_0_0_0_0 = zeromq.pull_source(gr.sizeof_gr_complex, 64, "tcp://"+ ipp2 + ":55520", 100, True)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(header_formatter.base())
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(fft_len, occupied_carriers, length_tag_key, "", 0, "", True)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(header_equalizer.base(), fft_len/4, length_tag_key, True, 1)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc((sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(header_mod.base())

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'), (self.zeromq_push_msg_sink_0, 'in'))    
        self.connect((self.digital_constellation_decoder_cb_0, 0), (self.digital_packet_headerparser_b_0, 0))    
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0), (self.digital_ofdm_frame_equalizer_vcvc_0, 0))    
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0), (self.digital_ofdm_serializer_vcc_header, 0))    
        self.connect((self.digital_ofdm_serializer_vcc_header, 0), (self.digital_constellation_decoder_cb_0, 0))    
        self.connect((self.fft_vxx_0, 0), (self.digital_ofdm_chanest_vcvc_0, 0))    
        self.connect((self.zeromq_pull_source_0_0_0_0_0, 0), (self.fft_vxx_0, 0))    
 def test_004_ofdm_scramble(self):
     """
     Test scrambling for OFDM header gen
     """
     header_len = 32
     packet_length = 23
     packet_len_tagname = "packet_len"
     frame_len_tagname = "frame_len"
     data, tags = tagged_streams.packets_to_vectors([
         list(range(packet_length)),
         list(range(packet_length)),
     ], packet_len_tagname)
     src = blocks.vector_source_b(data, False, 1, tags)
     header_formatter = digital.packet_header_ofdm(
         # 32 carriers are occupied (which doesn't matter here)
         (
             list(range(32)), ),
         1,  # 1 OFDM symbol per header (= 32 bits)
         packet_len_tagname,
         frame_len_tagname,
         "packet_num",
         1,  # 1 bit per header symbols (BPSK)
         2,  # 2 bits per payload symbol (QPSK)
         scramble_header=True)
     header_gen = digital.packet_headergenerator_bb(header_formatter.base())
     header_parser = digital.packet_headerparser_b(header_formatter.base())
     sink = blocks.message_debug()
     self.tb.connect(src, header_gen, header_parser)
     self.tb.msg_connect(header_parser, "header_data", sink, "store")
     self.tb.start()
     time.sleep(1)
     self.tb.stop()
     self.tb.wait()
     msg = pmt.to_python(sink.get_message(0))
     self.assertEqual(msg, {
         'packet_len': packet_length,
         'packet_num': 0,
         'frame_len': 4
     })
     msg = pmt.to_python(sink.get_message(1))
     self.assertEqual(msg, {
         'packet_len': packet_length,
         'packet_num': 1,
         'frame_len': 4
     })
 def test_003_ofdm (self):
     """ Header 1: 193 bytes
     Header 2: 8 bytes
     2 bits per complex symbol, 32 carriers => 64 bits = 8 bytes per OFDM symbol
                                 4 carriers =>  8 bits = 1 byte  per OFDM symbol
                                 8 carriers => 16 bits = 2 bytes per OFDM symbol
     Means we need 52 carriers to store the 193 bytes.
     """
     encoded_headers = (
         #   | Number of bytes                    | Packet number                      | CRC
             1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  1, 0, 1, 1, 0, 1, 1, 0,
             0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0,  1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,  0, 0, 1, 0, 1, 1, 1, 0,
     )
     packet_len_tagname = "packet_len"
     frame_len_tagname = "frame_len"
     src = blocks.vector_source_b(encoded_headers)
     header_formatter = digital.packet_header_ofdm(
             (list(range(32)),list(range(4)),list(range(8))), # 32/4/8 carriers are occupied (which doesn't matter here)
             1,         # 1 OFDM symbol per header (= 32 bits)
             packet_len_tagname,
             frame_len_tagname,
             "packet_num",
             1,         # 1 bit per header symbols (BPSK)
             2          # 2 bits per payload symbol (QPSK)
     )
     parser = digital.packet_headerparser_b(header_formatter.base())
     sink = blocks.message_debug()
     self.tb.connect(src, parser)
     self.tb.msg_connect(parser, "header_data", sink, "store")
     self.tb.start()
     time.sleep(1)
     self.tb.stop()
     self.tb.wait()
     self.assertEqual(sink.num_messages(), 2)
     msg1 = pmt.to_python(sink.get_message(0))
     msg2 = pmt.to_python(sink.get_message(1))
     # Multiply with 4 because unpacked bytes have only two bits
     self.assertEqual(msg1, {'packet_len': 193*4, 'frame_len': 52, 'packet_num': 0})
     self.assertEqual(msg2, {'packet_len': 8*4, 'frame_len': 1, 'packet_num': 1})
 def test_002_pipe(self):
     """
     Create N packets of random length, pipe them through header generator,
     back to header parser, make sure output is the same.
     """
     N = 20
     header_len = 32
     packet_len_tagname = "packet_len"
     packet_lengths = [random.randint(1, 100) for x in range(N)]
     data, tags = tagged_streams.packets_to_vectors([range(packet_lengths[i]) for i in range(N)], packet_len_tagname)
     src = blocks.vector_source_b(data, False, 1, tags)
     header_gen = digital.packet_headergenerator_bb(header_len, packet_len_tagname)
     header_parser = digital.packet_headerparser_b(header_len, packet_len_tagname)
     sink = blocks.message_debug()
     self.tb.connect(src, header_gen, header_parser)
     self.tb.msg_connect(header_parser, "header_data", sink, "store")
     self.tb.start()
     time.sleep(1)
     self.tb.stop()
     self.tb.wait()
     self.assertEqual(sink.num_messages(), N)
     for i in xrange(N):
         msg = pmt.to_python(sink.get_message(i))
         self.assertEqual(msg, {'packet_len': packet_lengths[i], 'packet_num': i})
Example #9
0
    def __init__(self):
        gr.top_block.__init__(self, "OFDM_TX_RX_1")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("OFDM_TX_RX_1")
        qtgui.util.check_set_qss()
        try:
            self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
        except:
            pass
        self.top_scroll_layout = Qt.QVBoxLayout()
        self.setLayout(self.top_scroll_layout)
        self.top_scroll = Qt.QScrollArea()
        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
        self.top_scroll_layout.addWidget(self.top_scroll)
        self.top_scroll.setWidgetResizable(True)
        self.top_widget = Qt.QWidget()
        self.top_scroll.setWidget(self.top_widget)
        self.top_layout = Qt.QVBoxLayout(self.top_widget)
        self.top_grid_layout = Qt.QGridLayout()
        self.top_layout.addLayout(self.top_grid_layout)

        self.settings = Qt.QSettings("GNU Radio", "OFDM_TX_RX_1")

        try:
            if StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
                self.restoreGeometry(self.settings.value("geometry").toByteArray())
            else:
                self.restoreGeometry(self.settings.value("geometry"))
        except:
            pass

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((1, 1, 1, -1,),)
        self.pilot_carriers = pilot_carriers = ((-21, -7, 7, 21,),)
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (list(range(-26, -21)) + list(range(-20, -7)) + list(range(-6, 0)) + list(range(1, 7)) + list(range(8, 21)) + list(range(22, 27)),)
        self.length_tag_key_rx = length_tag_key_rx = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.sync_word2 = sync_word2 = [0, 0, 0, 0, 0, 0, -1, -1, -1, -1, 1, 1, -1, -1, -1, 1, -1, 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, 1, -1, -1, 1, -1, 0, 1, -1, 1, 1, 1, -1, 1, 1, 1, -1, 1, 1, 1, 1, -1, 1, -1, -1, -1, 1, -1, 1, -1, -1, -1, -1, 0, 0, 0, 0, 0]
        self.sync_word1 = sync_word1 = [0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 0., 0., 0., 0., 0.]
        self.samp_rate = samp_rate = 1000000
        self.rolloff = rolloff = 0
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(fft_len, payload_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols, 1)
        self.packet_len = packet_len = 30
        self.length_tag_key = length_tag_key = "packet_len"
        self.header_len = header_len = 10
        self.header_formatter = header_formatter = digital.packet_header_ofdm(occupied_carriers, n_syms=1, len_tag_key=packet_length_tag_key, frame_len_tag_key=length_tag_key_rx, bits_per_header_sym=header_mod.bits_per_symbol(), bits_per_payload_sym=payload_mod.bits_per_symbol(), scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(fft_len, header_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols)

        ##################################################
        # Blocks
        ##################################################
        self.uhd_usrp_source_0 = uhd.usrp_source(
            ",".join(("", "")),
            uhd.stream_args(
                cpu_format="fc32",
                args='',
                channels=[],
            ),
        )
        self.uhd_usrp_source_0.set_center_freq(3.555e9, 0)
        self.uhd_usrp_source_0.set_gain(36, 0)
        self.uhd_usrp_source_0.set_antenna('RX2', 0)
        self.uhd_usrp_source_0.set_bandwidth(0.5e6, 0)
        self.uhd_usrp_source_0.set_samp_rate(samp_rate)
        self.uhd_usrp_source_0.set_time_unknown_pps(uhd.time_spec())
        self.qtgui_time_sink_x_0 = qtgui.time_sink_c(
            1024, #size
            samp_rate, #samp_rate
            "", #name
            1 #number of inputs
        )
        self.qtgui_time_sink_x_0.set_update_time(0.10)
        self.qtgui_time_sink_x_0.set_y_axis(-1, 1)

        self.qtgui_time_sink_x_0.set_y_label('Amplitude', "")

        self.qtgui_time_sink_x_0.enable_tags(True)
        self.qtgui_time_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, 0, "")
        self.qtgui_time_sink_x_0.enable_autoscale(False)
        self.qtgui_time_sink_x_0.enable_grid(False)
        self.qtgui_time_sink_x_0.enable_axis_labels(True)
        self.qtgui_time_sink_x_0.enable_control_panel(False)
        self.qtgui_time_sink_x_0.enable_stem_plot(False)


        labels = ['Signal 1', 'Signal 2', 'Signal 3', 'Signal 4', 'Signal 5',
            'Signal 6', 'Signal 7', 'Signal 8', 'Signal 9', 'Signal 10']
        widths = [1, 1, 1, 1, 1,
            1, 1, 1, 1, 1]
        colors = ['blue', 'red', 'green', 'black', 'cyan',
            'magenta', 'yellow', 'dark red', 'dark green', 'dark blue']
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
            1.0, 1.0, 1.0, 1.0, 1.0]
        styles = [1, 1, 1, 1, 1,
            1, 1, 1, 1, 1]
        markers = [-1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1]


        for i in range(2):
            if len(labels[i]) == 0:
                if (i % 2 == 0):
                    self.qtgui_time_sink_x_0.set_line_label(i, "Re{{Data {0}}}".format(i/2))
                else:
                    self.qtgui_time_sink_x_0.set_line_label(i, "Im{{Data {0}}}".format(i/2))
            else:
                self.qtgui_time_sink_x_0.set_line_label(i, labels[i])
            self.qtgui_time_sink_x_0.set_line_width(i, widths[i])
            self.qtgui_time_sink_x_0.set_line_color(i, colors[i])
            self.qtgui_time_sink_x_0.set_line_style(i, styles[i])
            self.qtgui_time_sink_x_0.set_line_marker(i, markers[i])
            self.qtgui_time_sink_x_0.set_line_alpha(i, alphas[i])

        self._qtgui_time_sink_x_0_win = sip.wrapinstance(self.qtgui_time_sink_x_0.pyqwidget(), Qt.QWidget)
        self.top_grid_layout.addWidget(self._qtgui_time_sink_x_0_win)
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0_0 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(header_formatter.base())
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(fft_len, 16, False, 0.9)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(fft_len, occupied_carriers, length_tag_key_rx, packet_length_tag_key, 1, '', True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(fft_len, occupied_carriers, length_tag_key_rx, '', 0, '', True)
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(payload_equalizer.base(), 16, length_tag_key_rx, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(header_equalizer.base(), 16, length_tag_key_rx, True, 1)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(sync_word1, sync_word2, 1, 0, 3, False)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3,
            fft_len,
            16,
            length_tag_key_rx,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            samp_rate,
            (),
            0)
        self.digital_crc32_bb_0_0 = digital.crc32_bb(True, packet_length_tag_key, True)
        self.digital_constellation_decoder_cb_1 = digital.constellation_decoder_cb(payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(header_mod.base())
        self.blocks_tag_debug_1 = blocks.tag_debug(gr.sizeof_char*1, 'Rx Bytes', "")
        self.blocks_tag_debug_1.set_display(False)
        self.blocks_repack_bits_bb_0_1 = blocks.repack_bits_bb(payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True, gr.GR_LSB_FIRST)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_file_sink_0 = blocks.file_sink(gr.sizeof_char*1, '/tmp/rx.txt', False)
        self.blocks_file_sink_0.set_unbuffered(True)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex*1, 80)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(-2.0/fft_len)



        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'), (self.digital_header_payload_demux_0, 'header_data'))
        self.connect((self.analog_frequency_modulator_fc_0, 0), (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_multiply_xx_0, 0), (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_repack_bits_bb_0_1, 0), (self.digital_crc32_bb_0_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0), (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1, 0), (self.blocks_repack_bits_bb_0_1, 0))
        self.connect((self.digital_crc32_bb_0_0, 0), (self.blocks_file_sink_0, 0))
        self.connect((self.digital_crc32_bb_0_0, 0), (self.blocks_tag_debug_1, 0))
        self.connect((self.digital_header_payload_demux_0, 0), (self.fft_vxx_0_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1), (self.fft_vxx_1, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0), (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0), (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0), (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0), (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0), (self.digital_constellation_decoder_cb_1, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0), (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1), (self.digital_header_payload_demux_0, 1))
        self.connect((self.fft_vxx_0_0, 0), (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_1, 0), (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
        self.connect((self.uhd_usrp_source_0, 0), (self.blocks_delay_0, 0))
        self.connect((self.uhd_usrp_source_0, 0), (self.digital_ofdm_sync_sc_cfb_0, 0))
        self.connect((self.uhd_usrp_source_0, 0), (self.qtgui_time_sink_x_0, 0))
    def __init__(self):
        gr.top_block.__init__(self, "OFDM Rx")

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((
            1,
            1,
            1,
            -1,
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -21,
            -7,
            7,
            21,
        ), )
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) +
            range(8, 21) + range(22, 27), )
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.transistion = transistion = 500
        self.sync_word2 = sync_word2 = [
            0j, 0j, 0j, 0j, 0j, 0j, (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (1 + 0j), (-1 + 0j), 0j, (1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j),
            (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            0j, 0j, 0j, 0j, 0j
        ]
        self.sync_word1 = sync_word1 = [
            0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
            -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            0., 0., 0., 0., 0.
        ]
        self.sideband_rx = sideband_rx = 1000
        self.sideband = sideband = 1000
        self.samp_rate = samp_rate = 48000
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 1)
        self.packet_len = packet_len = 4
        self.interpolation = interpolation = 225
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols)
        self.carrier = carrier = 10000

        ##################################################
        # Blocks
        ##################################################
        self.rational_resampler_xxx_0_0_0 = filter.rational_resampler_ccc(
            interpolation=1,
            decimation=10,
            taps=None,
            fractional_bw=None,
        )
        self.rational_resampler_xxx_0_0 = filter.rational_resampler_ccc(
            interpolation=1,
            decimation=interpolation,
            taps=None,
            fractional_bw=None,
        )
        self.freq_xlating_fir_filter_xxx_0_0 = filter.freq_xlating_fir_filter_ccc(
            1, (filter.firdes.low_pass(1, samp_rate, carrier + sideband_rx,
                                       1000)), carrier, samp_rate)
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len / 4, False)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, "", True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, "", 0, "", True)
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len / 4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len / 4, length_tag_key, True, 1)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(
            (sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3,
            fft_len,
            fft_len / 4,
            length_tag_key,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            samp_rate,
            (),
        )
        self.digital_crc32_bb_0 = digital.crc32_bb(True, packet_length_tag_key,
                                                   True)

        script, inputwav, outputBinary = argv

        self.digital_constellation_decoder_cb_1 = digital.constellation_decoder_cb(
            payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.blocks_wavfile_source_0 = blocks.wavfile_source(inputwav, False)
        self.blocks_unpack_k_bits_bb_0 = blocks.unpack_k_bits_bb(8)
        self.blocks_throttle_0_0 = blocks.throttle(gr.sizeof_gr_complex * 1,
                                                   samp_rate, True)
        self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex * 1,
                                                 samp_rate, True)
        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True,
            gr.GR_LSB_FIRST)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vcc((10, ))
        self.blocks_float_to_complex_0 = blocks.float_to_complex(1)
        self.blocks_file_sink_0 = blocks.file_sink(gr.sizeof_char * 1,
                                                   outputBinary, False)
        self.blocks_file_sink_0.set_unbuffered(False)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                           fft_len + fft_len / 4)
        self.blocks_add_xx_0 = blocks.add_vcc(1)
        self.analog_noise_source_x_0 = analog.noise_source_c(
            analog.GR_GAUSSIAN, 0.01, 0)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'),
                         (self.digital_header_payload_demux_0, 'header_data'))
        self.connect((self.analog_frequency_modulator_fc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.analog_noise_source_x_0, 0),
                     (self.blocks_throttle_0_0, 0))
        self.connect((self.blocks_add_xx_0, 0), (self.blocks_throttle_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_float_to_complex_0, 0),
                     (self.freq_xlating_fir_filter_xxx_0_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0, 0),
                     (self.blocks_add_xx_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0),
                     (self.digital_crc32_bb_0, 0))
        self.connect((self.blocks_throttle_0, 0), (self.blocks_delay_0, 0))
        self.connect((self.blocks_throttle_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_0, 0))
        self.connect((self.blocks_throttle_0_0, 0), (self.blocks_add_xx_0, 1))
        self.connect((self.blocks_unpack_k_bits_bb_0, 0),
                     (self.blocks_file_sink_0, 0))
        self.connect((self.blocks_wavfile_source_0, 0),
                     (self.blocks_float_to_complex_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1, 0),
                     (self.blocks_repack_bits_bb_0, 0))
        self.connect((self.digital_crc32_bb_0, 0),
                     (self.blocks_unpack_k_bits_bb_0, 0))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.fft_vxx_1, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0),
                     (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.digital_constellation_decoder_cb_1, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0),
                     (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1),
                     (self.digital_header_payload_demux_0, 1))
        self.connect((self.fft_vxx_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
        self.connect((self.freq_xlating_fir_filter_xxx_0_0, 0),
                     (self.rational_resampler_xxx_0_0, 0))
        self.connect((self.rational_resampler_xxx_0_0, 0),
                     (self.rational_resampler_xxx_0_0_0, 0))
        self.connect((self.rational_resampler_xxx_0_0_0, 0),
                     (self.blocks_multiply_const_vxx_0, 0))
Example #11
0
    def __init__(self, id_user=0):
        gr.top_block.__init__(self, "Polar Coding with Coded Caching")

        ##################################################
        # Parameters
        ##################################################
        self.id_user = id_user

        ##################################################
        # Variables
        ##################################################
        self.snr = snr = 50
        self.pilot_symbols = pilot_symbols = ((
            1,
            1,
            1,
            -1,
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -21,
            -7,
            7,
            21,
        ), )
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) +
            range(8, 21) + range(22, 27), )
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.Kw = Kw = 70 * 8
        self.variance = variance = 1 / pow(10, snr / 10.0)
        self.sync_word2 = sync_word2 = [
            0, 0, 0, 0, 0, 0, -1, -1, -1, -1, 1, 1, -1, -1, -1, 1, -1, 1, 1, 1,
            1, 1, -1, -1, -1, -1, -1, 1, -1, -1, 1, -1, 0, 1, -1, 1, 1, 1, -1,
            1, 1, 1, -1, 1, 1, 1, 1, -1, 1, -1, -1, -1, 1, -1, 1, -1, -1, -1,
            -1, 0, 0, 0, 0, 0
        ]
        self.sync_word1 = sync_word1 = [
            0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
            -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            0., 0., 0., 0., 0.
        ]
        self.small_packet_len = small_packet_len = 52
        self.samp_rate = samp_rate = 32000
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 0, 1)
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 0, 1)
        self.coderate = coderate = [1, 2, 3, 3, 4]
        self.Users = Users = 4
        self.Nbfiles = Nbfiles = 20
        self.NbStrgUsers = NbStrgUsers = 1
        self.NbChuncks = NbChuncks = 200
        self.N = N = 2048
        self.Ks = Ks = 2 * Kw

        ##################################################
        # Blocks
        ##################################################
        self.zeromq_sub_msg_source_0_0_0 = zeromq.sub_msg_source(
            'tcp://localhost:5575', 10)
        self.zeromq_sub_msg_source_0_0 = zeromq.sub_msg_source(
            'tcp://localhost:5555', 10)
        self.zeromq_pub_msg_sink_0_0_0 = zeromq.pub_msg_sink(
            'tcp://*:5575', 10)
        self.zeromq_pub_msg_sink_0_0 = zeromq.pub_msg_sink('tcp://*:5555', 10)
        self.projectCACHE_polarEnc_b_0_0 = projectCACHE.polarEnc_b(
            N, Nbfiles, NbChuncks, NbStrgUsers, id_user, small_packet_len,
            packet_length_tag_key)
        self.projectCACHE_ofdm_frame_equalizer1_vcvc_0 = projectCACHE.ofdm_frame_equalizer1_vcvc(
            fft_len, fft_len / 4, length_tag_key, True, occupied_carriers,
            pilot_carriers, pilot_symbols, 0, True)
        self.projectCACHE_map_header_payload_bc_0 = projectCACHE.map_header_payload_bc(
            4, 2, packet_length_tag_key)
        self.projectCACHE_PolarDec_b_0_0 = projectCACHE.PolarDec_b(
            N, Nbfiles, NbChuncks, id_user, Users, small_packet_len, 42,
            coderate[id_user], packet_length_tag_key)
        self.projectCACHE_PC_Error_Rate_0_0 = projectCACHE.PC_Error_Rate(
            id_user, 200)
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0_0 = fft.fft_vcc(fft_len, False, (()), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_probe_mpsk_snr_est_c_0 = digital.probe_mpsk_snr_est_c(
            3, 1000, 0.0001)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_packet_headergenerator_bb_0 = digital.packet_headergenerator_bb(
            header_formatter.formatter(), packet_length_tag_key)
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len / 4, False, 0.9)
        self.digital_ofdm_serializer_vcc_payload_0 = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, '', True)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, '', True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, '', 0, '', True)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len / 4, length_tag_key, True, 1)
        self.digital_ofdm_cyclic_prefixer_0 = digital.ofdm_cyclic_prefixer(
            fft_len, fft_len + fft_len / 4, 0, packet_length_tag_key)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(
            (sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_ofdm_carrier_allocator_cvc_0 = digital.ofdm_carrier_allocator_cvc(
            fft_len, occupied_carriers, pilot_carriers, pilot_symbols,
            (sync_word1, sync_word2), packet_length_tag_key)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3,
            fft_len,
            fft_len / 4,
            length_tag_key,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            samp_rate,
            (),
            0,
        )
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.digital_chunks_to_symbols_xx_0_1 = digital.chunks_to_symbols_bc(
            (header_mod.points()), 1)
        self.channels_channel_model_0_0 = channels.channel_model(
            noise_voltage=numpy.sqrt(variance),
            frequency_offset=1.0,
            epsilon=1.0,
            taps=(1.0, ),
            noise_seed=0,
            block_tags=False)
        self.blocks_throttle_0_0 = blocks.throttle(gr.sizeof_gr_complex * 1,
                                                   samp_rate, True)
        self.blocks_tagged_stream_to_pdu_0 = blocks.tagged_stream_to_pdu(
            blocks.complex_t, 'packet_len')
        self.blocks_tagged_stream_mux_0 = blocks.tagged_stream_mux(
            gr.sizeof_gr_complex * 1, packet_length_tag_key, 0)
        (self.blocks_tagged_stream_mux_0).set_max_output_buffer(8192)
        self.blocks_tag_gate_0 = blocks.tag_gate(gr.sizeof_gr_complex * 1,
                                                 False)
        self.blocks_tag_gate_0.set_single_key("")
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_multiply_const_vxx_1 = blocks.multiply_const_vcc((0.05, ))
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                           fft_len + fft_len / 4)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.blocks_tagged_stream_to_pdu_0, 'pdus'),
                         (self.zeromq_pub_msg_sink_0_0_0, 'in'))
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'),
                         (self.digital_header_payload_demux_0, 'header_data'))
        self.msg_connect((self.digital_probe_mpsk_snr_est_c_0, 'snr'),
                         (self.projectCACHE_PC_Error_Rate_0_0, 'SNR'))
        self.msg_connect((self.projectCACHE_polarEnc_b_0_0, 'BER_INFO'),
                         (self.zeromq_pub_msg_sink_0_0, 'in'))
        self.msg_connect((self.zeromq_sub_msg_source_0_0, 'out'),
                         (self.projectCACHE_PC_Error_Rate_0_0, 'BER_INFO'))
        self.msg_connect((self.zeromq_sub_msg_source_0_0_0, 'out'),
                         (self.projectCACHE_PC_Error_Rate_0_0, 'CH_USE'))
        self.connect((self.analog_frequency_modulator_fc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_multiply_const_vxx_1, 0),
                     (self.blocks_throttle_0_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_tag_gate_0, 0),
                     (self.blocks_multiply_const_vxx_1, 0))
        self.connect((self.blocks_tagged_stream_mux_0, 0),
                     (self.digital_ofdm_carrier_allocator_cvc_0, 0))
        self.connect((self.blocks_throttle_0_0, 0),
                     (self.channels_channel_model_0_0, 0))
        self.connect((self.channels_channel_model_0_0, 0),
                     (self.blocks_delay_0, 0))
        self.connect((self.channels_channel_model_0_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_0, 0))
        self.connect((self.digital_chunks_to_symbols_xx_0_1, 0),
                     (self.blocks_tagged_stream_mux_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.fft_vxx_1, 0))
        self.connect((self.digital_ofdm_carrier_allocator_cvc_0, 0),
                     (self.fft_vxx_0_0, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_cyclic_prefixer_0, 0),
                     (self.blocks_tag_gate_0, 0))
        self.connect((self.digital_ofdm_cyclic_prefixer_0, 0),
                     (self.blocks_tagged_stream_to_pdu_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.projectCACHE_PolarDec_b_0_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload_0, 0),
                     (self.digital_probe_mpsk_snr_est_c_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0),
                     (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1),
                     (self.digital_header_payload_demux_0, 1))
        self.connect((self.digital_packet_headergenerator_bb_0, 0),
                     (self.digital_chunks_to_symbols_xx_0_1, 0))
        self.connect((self.fft_vxx_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_0_0, 0),
                     (self.digital_ofdm_cyclic_prefixer_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.digital_ofdm_serializer_vcc_payload_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.projectCACHE_ofdm_frame_equalizer1_vcvc_0, 0))
        self.connect((self.projectCACHE_map_header_payload_bc_0, 0),
                     (self.blocks_tagged_stream_mux_0, 1))
        self.connect((self.projectCACHE_ofdm_frame_equalizer1_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.projectCACHE_polarEnc_b_0_0, 0),
                     (self.digital_packet_headergenerator_bb_0, 0))
        self.connect((self.projectCACHE_polarEnc_b_0_0, 0),
                     (self.projectCACHE_map_header_payload_bc_0, 0))
    def __init__(self):
        grc_wxgui.top_block_gui.__init__(self, title="Receiver")

        ##################################################
        # Variables
        ##################################################
        self.samp_rate = samp_rate = 1000000

        ##################################################
        # Blocks
        ##################################################
        self.uhd_usrp_source_0 = uhd.usrp_source(
        	",".join(("", "")),
        	uhd.stream_args(
        		cpu_format="fc32",
        		channels=range(1),
        	),
        )
        self.uhd_usrp_source_0.set_samp_rate(samp_rate)
        self.uhd_usrp_source_0.set_center_freq(1000000, 0)
        self.uhd_usrp_source_0.set_gain(0, 0)
        self.low_pass_filter_0 = filter.interp_fir_filter_ccf(1, firdes.low_pass(
        	32, samp_rate, 0.45*samp_rate, 10000, firdes.WIN_HAMMING, 6.76))
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(digital.packet_header_default(40,"packet_len"))
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
        	  40,
        	  1,
        	  0,
        	  "packet_len",
        	  '',
        	  True,
        	  gr.sizeof_gr_complex,
        	  "rx_time",
                  samp_rate,
                  (""),
                  0,
            )
        self.digital_gmsk_demod_0 = digital.gmsk_demod(
        	samples_per_symbol=2,
        	gain_mu=0.175,
        	mu=0.5,
        	omega_relative_limit=0.005,
        	freq_error=0.0,
        	verbose=False,
        	log=False,
        )
        self.digital_crc32_bb_0_0 = digital.crc32_bb(True, "packet_len", True)
        self.digital_constellation_decoder_cb_0_0 = digital.constellation_decoder_cb(digital.constellation_bpsk().base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(digital.constellation_bpsk().base())
        self.blocks_tuntap_pdu_1 = blocks.tuntap_pdu('tun1', 10000, False)
        self.blocks_tagged_stream_to_pdu_0 = blocks.tagged_stream_to_pdu(blocks.byte_t, 'packet_len')
        self.blocks_tag_debug_0 = blocks.tag_debug(gr.sizeof_char*1, 'test', ""); self.blocks_tag_debug_0.set_display(False)
        self.blocks_repack_bits_bb_0_0 = blocks.repack_bits_bb(1, 8, "packet_len", True, gr.GR_LSB_FIRST)
        self.blocks_float_to_char_0 = blocks.float_to_char(1, 1)
        self.blks2_packet_decoder_0 = grc_blks2.packet_demod_c(grc_blks2.packet_decoder(
        		access_code='',
        		threshold=-1,
        		callback=lambda ok, payload: self.blks2_packet_decoder_0.recv_pkt(ok, payload),
        	),
        )
        self.analog_const_source_x_0 = analog.sig_source_f(0, analog.GR_CONST_WAVE, 0, 0, 1)



        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.blocks_tagged_stream_to_pdu_0, 'pdus'), (self.blocks_tuntap_pdu_1, 'pdus'))
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'), (self.digital_header_payload_demux_0, 'header_data'))
        self.connect((self.analog_const_source_x_0, 0), (self.blocks_float_to_char_0, 0))
        self.connect((self.blks2_packet_decoder_0, 0), (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_float_to_char_0, 0), (self.digital_header_payload_demux_0, 1))
        self.connect((self.blocks_repack_bits_bb_0_0, 0), (self.digital_crc32_bb_0_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0), (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0_0, 0), (self.blocks_repack_bits_bb_0_0, 0))
        self.connect((self.digital_crc32_bb_0_0, 0), (self.blocks_tag_debug_0, 0))
        self.connect((self.digital_crc32_bb_0_0, 0), (self.blocks_tagged_stream_to_pdu_0, 0))
        self.connect((self.digital_gmsk_demod_0, 0), (self.blks2_packet_decoder_0, 0))
        self.connect((self.digital_header_payload_demux_0, 0), (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1), (self.digital_constellation_decoder_cb_0_0, 0))
        self.connect((self.low_pass_filter_0, 0), (self.digital_gmsk_demod_0, 0))
        self.connect((self.uhd_usrp_source_0, 0), (self.low_pass_filter_0, 0))
Example #13
0
    def __init__(
        self, ipp1="127.0.0.1", ipp2="127.0.0.1", ipp3="127.0.0.1", ipp4="127.0.0.1", iptx="127.0.0.1", samp_rate=1000
    ):
        gr.top_block.__init__(self, "OFDM Rx")

        ##################################################
        # Parameters
        ##################################################
        self.ipp1 = ipp1
        self.ipp2 = ipp2
        self.ipp3 = ipp3
        self.ipp4 = ipp4
        self.iptx = iptx
        self.samp_rate = samp_rate

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((1, 1, 1, -1),)
        self.pilot_carriers = pilot_carriers = ((-21, -7, 7, 21),)
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) + range(8, 21) + range(22, 27),
        )
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.sync_word2 = sync_word2 = [
            0j,
            0j,
            0j,
            0j,
            0j,
            0j,
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            0j,
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            0j,
            0j,
            0j,
            0j,
            0j,
        ]
        self.sync_word1 = sync_word1 = [
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
            1.41421356,
            0.0,
            -1.41421356,
            0.0,
            1.41421356,
            0.0,
            -1.41421356,
            0.0,
            -1.41421356,
            0.0,
            -1.41421356,
            0.0,
            1.41421356,
            0.0,
            -1.41421356,
            0.0,
            1.41421356,
            0.0,
            -1.41421356,
            0.0,
            -1.41421356,
            0.0,
            -1.41421356,
            0.0,
            -1.41421356,
            0.0,
            1.41421356,
            0.0,
            -1.41421356,
            0.0,
            1.41421356,
            0.0,
            1.41421356,
            0.0,
            1.41421356,
            0.0,
            -1.41421356,
            0.0,
            1.41421356,
            0.0,
            1.41421356,
            0.0,
            1.41421356,
            0.0,
            -1.41421356,
            0.0,
            1.41421356,
            0.0,
            1.41421356,
            0.0,
            1.41421356,
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
        ]
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols, 1
        )
        self.packet_len = packet_len = 96
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False,
        )
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols
        )

        ##################################################
        # Blocks
        ##################################################
        self.zeromq_push_sink_0_0_1_0_0 = zeromq.push_sink(gr.sizeof_char, 1, "tcp://" + ipp3 + ":55530", 100, True)
        self.zeromq_push_sink_0_0_1_0 = zeromq.push_sink(
            gr.sizeof_gr_complex, 64, "tcp://" + ipp2 + ":55521", 100, True
        )
        self.zeromq_push_sink_0_0_1 = zeromq.push_sink(gr.sizeof_gr_complex, 64, "tcp://" + ipp2 + ":55520", 100, True)
        self.zeromq_push_sink_0_0_0 = zeromq.push_sink(gr.sizeof_char, 1, "tcp://" + ipp1 + ":55511", 100, True)
        self.zeromq_push_sink_0_0 = zeromq.push_sink(gr.sizeof_gr_complex, 1, "tcp://" + ipp1 + ":55510", 100, True)
        self.zeromq_push_sink_0 = zeromq.push_sink(gr.sizeof_gr_complex, 1, "tcp://" + iptx + ":55500", 100, True)
        self.zeromq_pull_source_0_0_0_0_0_0 = zeromq.pull_source(
            gr.sizeof_gr_complex, 64, "tcp://" + ipp2 + ":55521", 100, True
        )
        self.zeromq_pull_source_0_0_0_0_0 = zeromq.pull_source(
            gr.sizeof_gr_complex, 64, "tcp://" + ipp2 + ":55520", 100, True
        )
        self.zeromq_pull_source_0_0_0_0 = zeromq.pull_source(gr.sizeof_char, 1, "tcp://" + ipp3 + ":55530", 100, True)
        self.zeromq_pull_source_0_0_0 = zeromq.pull_source(gr.sizeof_char, 1, "tcp://" + ipp1 + ":55511", 100, True)
        self.zeromq_pull_source_0_0 = zeromq.pull_source(gr.sizeof_gr_complex, 1, "tcp://" + ipp1 + ":55510", 100, True)
        self.zeromq_pull_source_0 = zeromq.pull_source(gr.sizeof_gr_complex, 1, "tcp://" + iptx + ":55500", 100, True)
        self.my_random_source_limit_rate_0 = my.random_source_limit_rate(1000)
        self.my_number_sync_timestamp_0 = my.number_sync_timestamp()
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(header_formatter.base())
        self.digital_ofdm_tx_0 = digital.ofdm_tx(
            fft_len=fft_len,
            cp_len=fft_len / 4,
            packet_length_tag_key=packet_length_tag_key,
            occupied_carriers=occupied_carriers,
            pilot_carriers=pilot_carriers,
            pilot_symbols=pilot_symbols,
            sync_word1=sync_word1,
            sync_word2=sync_word2,
            bps_header=1,
            bps_payload=2,
            rolloff=0,
            debug_log=True,
            scramble_bits=False,
        )
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(fft_len, fft_len / 4, False)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key, 1, "", True
        )
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, "", 0, "", True
        )
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len / 4, length_tag_key, True, 0
        )
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len / 4, length_tag_key, True, 1
        )
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc((sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3, fft_len, fft_len / 4, length_tag_key, "", True, gr.sizeof_gr_complex, "rx_time", samp_rate, ()
        )
        self.digital_crc32_bb_0 = digital.crc32_bb(True, packet_length_tag_key, True)
        self.digital_constellation_decoder_cb_1 = digital.constellation_decoder_cb(payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(header_mod.base())
        self.channels_channel_model_0 = channels.channel_model(
            noise_voltage=0.1,
            frequency_offset=0 * 1.0 / fft_len,
            epsilon=1.0,
            taps=(1.0,),
            noise_seed=0,
            block_tags=True,
        )
        self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex * 1, samp_rate, True)
        self.blocks_tag_debug_1 = blocks.tag_debug(gr.sizeof_char * 1, "Rx Bytes", "")
        self.blocks_tag_debug_1.set_display(True)
        self.blocks_stream_to_tagged_stream_0 = blocks.stream_to_tagged_stream(
            gr.sizeof_char, 1, packet_len, packet_length_tag_key
        )
        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True, gr.GR_LSB_FIRST
        )
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1, fft_len + fft_len / 4)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(-2.0 / fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect(
            (self.digital_packet_headerparser_b_0, "header_data"), (self.digital_header_payload_demux_0, "header_data")
        )
        self.connect((self.analog_frequency_modulator_fc_0, 0), (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_multiply_xx_0, 0), (self.zeromq_push_sink_0_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0), (self.digital_crc32_bb_0, 0))
        self.connect((self.blocks_stream_to_tagged_stream_0, 0), (self.digital_ofdm_tx_0, 0))
        self.connect((self.blocks_throttle_0, 0), (self.zeromq_push_sink_0, 0))
        self.connect((self.channels_channel_model_0, 0), (self.blocks_throttle_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0), (self.zeromq_push_sink_0_0_1_0_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1, 0), (self.blocks_repack_bits_bb_0, 0))
        self.connect((self.digital_crc32_bb_0, 0), (self.blocks_tag_debug_1, 0))
        self.connect((self.digital_crc32_bb_0, 0), (self.my_number_sync_timestamp_0, 0))
        self.connect((self.digital_header_payload_demux_0, 0), (self.zeromq_push_sink_0_0_1, 0))
        self.connect((self.digital_header_payload_demux_0, 1), (self.zeromq_push_sink_0_0_1_0, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0), (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0), (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0), (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0), (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0), (self.digital_constellation_decoder_cb_1, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0), (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1), (self.zeromq_push_sink_0_0_0, 0))
        self.connect((self.digital_ofdm_tx_0, 0), (self.channels_channel_model_0, 0))
        self.connect((self.fft_vxx_0, 0), (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_1, 0), (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
        self.connect((self.my_random_source_limit_rate_0, 0), (self.blocks_stream_to_tagged_stream_0, 0))
        self.connect((self.zeromq_pull_source_0, 0), (self.blocks_delay_0, 0))
        self.connect((self.zeromq_pull_source_0, 0), (self.digital_ofdm_sync_sc_cfb_0, 0))
        self.connect((self.zeromq_pull_source_0_0, 0), (self.digital_header_payload_demux_0, 0))
        self.connect((self.zeromq_pull_source_0_0_0, 0), (self.digital_header_payload_demux_0, 1))
        self.connect((self.zeromq_pull_source_0_0_0_0, 0), (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.zeromq_pull_source_0_0_0_0_0, 0), (self.fft_vxx_0, 0))
        self.connect((self.zeromq_pull_source_0_0_0_0_0_0, 0), (self.fft_vxx_1, 0))
Example #14
0
    def __init__(self):
        grc_wxgui.top_block_gui.__init__(self, title="OFDM Rx")

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((
            (-1 + 1j),
            (1 - 1j),
            (-1 + 1j),
            (-1 - 1j),
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -42,
            -14,
            14,
            42,
        ), )
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            range(-61, -42) + range(-41, -14) + range(-13, -7) + range(-6, 0) +
            range(1, 7) + range(7, 14) + range(15, 42) + range(43, 62), )
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 128
        self.sync_word1 = sync_word1 = [
            (0.7071 - 0.7071j),
            (-0.7071 + 0.7071j),
            (0.7071 + 0.7071j),
            (-0.7071 - 0.7071j),
            (-0.7071 + 0.7071j),
            (0.7071 + -0.7071j),
            (0.7071 + 0.7071j),
            (-0.7071 + 0.7071j),
            (-0.7071 - 0.7071j),
            (-0.7071 + 0.7071j),
            (0.7071 + 0.7071j),
            (-0.7071 + 0.7071j),
            (-0.7071 - 0.7071j),
            (-0.7071 + 0.7071j),
            (0.7071 + 0.7071j),
            (0.7071 + 0.7071j),
            (0.7071 - 0.7071j),
            (0.7071 + 0.7071j),
            (-0.7071 + 0.7071j),
            (-0.7071 - 0.7071j),
            (-0.7071 + 0.7071j),
            (-0.7071 - 0.7071j),
            (0.7071 - 0.7071j),
            (-0.7071 - 0.7071j),
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
            0,
        ]
        self.samp_rate = samp_rate = 1.92e6
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 1)
        self.packet_len = packet_len = 96
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols)

        ##################################################
        # Blocks
        ##################################################
        self.uhd_usrp_source_0 = uhd.usrp_source(
            ",".join(("", "")),
            uhd.stream_args(
                cpu_format="fc32",
                channels=range(1),
            ),
        )
        self.uhd_usrp_source_0.set_samp_rate(samp_rate)
        self.uhd_usrp_source_0.set_center_freq(1.2e9, 0)
        self.uhd_usrp_source_0.set_gain(50, 0)
        self.uhd_usrp_source_0.set_antenna('RX2', 0)
        self.uhd_usrp_source_0.set_bandwidth(samp_rate, 0)
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len / 4, False, 0.9)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, '', True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, '', 0, '', True)
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len / 4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len / 4, length_tag_key, True, 1)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(
            (sync_word1), (), 1, 0, 3, False)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3,
            fft_len,
            fft_len / 4,
            length_tag_key,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            1920000,
            (),
            0,
        )
        self.digital_crc32_bb_0 = digital.crc32_bb(True, packet_length_tag_key,
                                                   True)
        self.digital_constellation_decoder_cb_1 = digital.constellation_decoder_cb(
            payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.blocks_tag_debug_1 = blocks.tag_debug(gr.sizeof_char * 1,
                                                   'Rx Bytes', "")
        self.blocks_tag_debug_1.set_display(True)
        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True,
            gr.GR_LSB_FIRST)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                           fft_len + fft_len / 4)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'),
                         (self.digital_header_payload_demux_0, 'header_data'))
        self.connect((self.analog_frequency_modulator_fc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0),
                     (self.digital_crc32_bb_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1, 0),
                     (self.blocks_repack_bits_bb_0, 0))
        self.connect((self.digital_crc32_bb_0, 0),
                     (self.blocks_tag_debug_1, 0))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.fft_vxx_1, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0),
                     (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.digital_constellation_decoder_cb_1, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0),
                     (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1),
                     (self.digital_header_payload_demux_0, 1))
        self.connect((self.fft_vxx_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
        self.connect((self.uhd_usrp_source_0, 0), (self.blocks_delay_0, 0))
        self.connect((self.uhd_usrp_source_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_0, 0))
Example #15
0
    def __init__(self, samp_rate=10000):
        gr.hier_block2.__init__(
            self,
            "Sync Radio Hier Grc",
            gr.io_signaturev(2, 2,
                             [gr.sizeof_char * 1, gr.sizeof_gr_complex * 1]),
            gr.io_signaturev(2, 2,
                             [gr.sizeof_char * 1, gr.sizeof_gr_complex * 1]),
        )

        ##################################################
        # Parameters
        ##################################################
        self.samp_rate = samp_rate

        ##################################################
        # Variables
        ##################################################
        self.sync_word2 = sync_word2 = [
            0j, 0j, 0j, 0j, 0j, 0j, 0j, 0j, 0j, 0j, 0j, 0j, 0j, 0j, 0j, 0j,
            (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j), (-1 + 0j),
            (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j), 0j, (1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j),
            (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), 0j, 0j, 0j, 0j, 0j, 0j, 0j, 0j, 0j, 0j, 0j, 0j, 0j, 0j,
            0j, 0j
        ]
        self.sync_word1 = sync_word1 = [
            0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
            0.0, 0.0, 0.0, 0.0, 1.42, 0.0, -1.42, 0.0, 1.42, 0.0, 1.42, 0.0,
            1.42, 0.0, 1.42, 0.0, -1.42, 0.0, 1.42, 0.0, 1.42, 0.0, -1.42, 0.0,
            1.42, 0.0, 1.42, 0.0, 1.42, 0.0, -1.42, 0.0, 1.42, 0.0, 1.42, 0.0,
            0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,
            0.0, 0.0
        ]
        self.pilot_symbols = pilot_symbols = ((
            1,
            -1,
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -13,
            12,
        ), )
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = ([
            -16, -15, -14, -12, -11, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1,
            1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15
        ], )
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = (len(sync_word1) + len(sync_word2)) / 2
        self.rolloff = rolloff = 0
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 1)
        self.len_ocup_carr = len_ocup_carr = len(occupied_carriers[0])
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=True)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols)
        self.forward_OOB = forward_OOB = [
            0.005277622700213007, 0.03443705907448985, 0.1214101788557494,
            0.29179662246081545, 0.52428014905364, 0.7350677973792328,
            0.8210395030022875, 0.7350677973792348, 0.5242801490536404,
            0.291796622460816, 0.1214101788557501, 0.03443705907448997,
            0.005277622700213012
        ]
        self.feedback_OOB = feedback_OOB = [
            1.0, -1.0455317889337852, 3.9201525346250072, -3.9114761684448958,
            6.54266144224035, -5.737287389902878, 5.820328302284336,
            -4.134700802700442, 2.7949972248757664, -1.4584448495689168,
            0.6358650797085171, -0.19847981428665007, 0.04200458351675313
        ]
        self.cp_len = cp_len = fft_len / 4
        self.active_carriers = active_carriers = len(occupied_carriers[0]) + 4

        ##################################################
        # Blocks
        ##################################################
        self.iir_filter_xxx_1 = filter.iir_filter_ccd((forward_OOB),
                                                      (feedback_OOB), False)
        self.fft_vxx_txpath = fft.fft_vcc(fft_len, False, (()), True, 1)
        self.fft_vxx_2_rxpath = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_1_rxpath = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_rxpath = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_packet_headergenerator_bb_txpath = digital.packet_headergenerator_bb(
            header_formatter.formatter(), "packet_len")
        self.digital_ofdm_sync_sc_cfb_rxpath = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len / 4, False)
        self.digital_ofdm_serializer_vcc_payload_rxpath = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, "", True)
        self.digital_ofdm_serializer_vcc_header_rxpath = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, "", 0, "", True)
        self.digital_ofdm_frame_equalizer_vcvc_2_rxpath = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), cp_len, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_1_rxpath = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), cp_len, length_tag_key, True, 1)
        self.digital_ofdm_cyclic_prefixer_txpath = digital.ofdm_cyclic_prefixer(
            fft_len, fft_len + cp_len, rolloff, packet_length_tag_key)
        (self.digital_ofdm_cyclic_prefixer_txpath).set_min_output_buffer(24000)
        self.digital_ofdm_chanest_vcvc_rxpath = digital.ofdm_chanest_vcvc(
            (sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_ofdm_carrier_allocator_cvc_txpath = digital.ofdm_carrier_allocator_cvc(
            fft_len, occupied_carriers, pilot_carriers, pilot_symbols,
            (sync_word1, sync_word2), packet_length_tag_key)
        (self.digital_ofdm_carrier_allocator_cvc_txpath
         ).set_min_output_buffer(16000)
        self.digital_header_payload_demux_rxpath = digital.header_payload_demux(
            3,
            fft_len,
            cp_len,
            length_tag_key,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            samp_rate,
            (),
        )
        #self.digital_crc32_bb_txpath = digital.crc32_bb(False, packet_length_tag_key)
        #self.digital_crc32_bb_rxpath = digital.crc32_bb(True, packet_length_tag_key)
        self.digital_constellation_decoder_cb_1_rxpath = digital.constellation_decoder_cb(
            payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.digital_chunks_to_symbols_x_txpath = digital.chunks_to_symbols_bc(
            (payload_mod.points()), 1)
        self.digital_chunks_to_symbols_txpath = digital.chunks_to_symbols_bc(
            (header_mod.points()), 1)
        self.blocks_tagged_stream_mux_txpath = blocks.tagged_stream_mux(
            gr.sizeof_gr_complex * 1, packet_length_tag_key, 0)
        (self.blocks_tagged_stream_mux_txpath).set_min_output_buffer(16000)
        self.blocks_tag_gate_txpath = blocks.tag_gate(gr.sizeof_gr_complex * 1,
                                                      False)
        self.blocks_repack_bits_bb_txpath = blocks.repack_bits_bb(
            8, payload_mod.bits_per_symbol(), packet_length_tag_key, False)
        self.blocks_repack_bits_bb_rxpath = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True)
        self.blocks_multiply_xx_rxpath = blocks.multiply_vcc(1)
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vcc((.01, ))
        self.blocks_delay_rxpath = blocks.delay(gr.sizeof_gr_complex * 1,
                                                fft_len + fft_len / 4)
        self.analog_frequency_modulator_fc_rxpath = analog.frequency_modulator_fc(
            -2.0 / fft_len)
        self.analog_agc2_xx_0 = analog.agc2_cc(1e-1, 1e-2, 1.0, 1.0)
        self.analog_agc2_xx_0.set_max_gain(65536)

        ##################################################
        # Connections
        ##################################################
        self.connect((self.digital_ofdm_sync_sc_cfb_rxpath, 0),
                     (self.analog_frequency_modulator_fc_rxpath, 0))
        self.connect((self.analog_agc2_xx_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_rxpath, 0))
        self.connect((self.analog_agc2_xx_0, 0), (self.blocks_delay_rxpath, 0))
        self.connect((self.digital_packet_headergenerator_bb_txpath, 0),
                     (self.digital_chunks_to_symbols_txpath, 0))
        self.connect((self.blocks_repack_bits_bb_txpath, 0),
                     (self.digital_chunks_to_symbols_x_txpath, 0))
        self.connect((self.digital_chunks_to_symbols_txpath, 0),
                     (self.blocks_tagged_stream_mux_txpath, 0))
        self.connect((self.digital_chunks_to_symbols_x_txpath, 0),
                     (self.blocks_tagged_stream_mux_txpath, 1))
        self.connect((self.digital_ofdm_cyclic_prefixer_txpath, 0),
                     (self.blocks_tag_gate_txpath, 0))
        self.connect((self.fft_vxx_txpath, 0),
                     (self.digital_ofdm_cyclic_prefixer_txpath, 0))
        self.connect((self.blocks_tagged_stream_mux_txpath, 0),
                     (self.digital_ofdm_carrier_allocator_cvc_txpath, 0))
        self.connect((self.digital_ofdm_carrier_allocator_cvc_txpath, 0),
                     (self.fft_vxx_txpath, 0))
        self.connect((self.digital_header_payload_demux_rxpath, 0),
                     (self.fft_vxx_1_rxpath, 0))
        self.connect((self.fft_vxx_1_rxpath, 0),
                     (self.digital_ofdm_chanest_vcvc_rxpath, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1_rxpath, 0),
                     (self.digital_ofdm_serializer_vcc_header_rxpath, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_rxpath, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1_rxpath, 0))
        self.connect((self.digital_header_payload_demux_rxpath, 1),
                     (self.fft_vxx_2_rxpath, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_2_rxpath, 0),
                     (self.digital_ofdm_serializer_vcc_payload_rxpath, 0))
        self.connect((self.fft_vxx_2_rxpath, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_2_rxpath, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload_rxpath, 0),
                     (self.digital_constellation_decoder_cb_1_rxpath, 0))
        self.connect((self.digital_constellation_decoder_cb_1_rxpath, 0),
                     (self.blocks_repack_bits_bb_rxpath, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header_rxpath, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.analog_frequency_modulator_fc_rxpath, 0),
                     (self.blocks_multiply_xx_rxpath, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_rxpath, 1),
                     (self.digital_header_payload_demux_rxpath, 1))
        self.connect((self.blocks_multiply_xx_rxpath, 0),
                     (self.digital_header_payload_demux_rxpath, 0))
        self.connect((self.blocks_delay_rxpath, 0),
                     (self.blocks_multiply_xx_rxpath, 1))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_rxpath, 0))
        self.connect((self, 1), (self.analog_agc2_xx_0, 0))
        self.connect((self.blocks_tag_gate_txpath, 0),
                     (self.blocks_multiply_const_vxx_0, 0))
        self.connect((self.iir_filter_xxx_1, 0), (self, 1))
        '''
        self.connect((self, 0), (self.digital_crc32_bb_txpath, 0))
        self.connect((self.digital_crc32_bb_txpath, 0), (self.blocks_repack_bits_bb_txpath, 0))
        self.connect((self.digital_crc32_bb_txpath, 0), (self.digital_packet_headergenerator_bb_txpath, 0))
        '''
        self.connect((self, 0), (self.blocks_repack_bits_bb_txpath, 0))
        self.connect((self, 0),
                     (self.digital_packet_headergenerator_bb_txpath, 0))
        '''
        self.connect((self.blocks_repack_bits_bb_rxpath, 0), (self.digital_crc32_bb_rxpath, 0))
        self.connect((self.digital_crc32_bb_rxpath, 0), (self, 0))
        '''
        self.connect((self.blocks_repack_bits_bb_rxpath, 0), (self, 0))

        self.connect((self.blocks_multiply_const_vxx_0, 0),
                     (self.iir_filter_xxx_1, 0))

        ##################################################
        # Asynch Message Connections
        ##################################################
        self.msg_connect(self.digital_packet_headerparser_b_rxpath,
                         "header_data",
                         self.digital_header_payload_demux_rxpath,
                         "header_data")
Example #16
0
    def __init__(self):
        gr.top_block.__init__(self, "OFDM Tx")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("OFDM Tx")
        qtgui.util.check_set_qss()
        try:
            self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
        except:
            pass
        self.top_scroll_layout = Qt.QVBoxLayout()
        self.setLayout(self.top_scroll_layout)
        self.top_scroll = Qt.QScrollArea()
        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
        self.top_scroll_layout.addWidget(self.top_scroll)
        self.top_scroll.setWidgetResizable(True)
        self.top_widget = Qt.QWidget()
        self.top_scroll.setWidget(self.top_widget)
        self.top_layout = Qt.QVBoxLayout(self.top_widget)
        self.top_grid_layout = Qt.QGridLayout()
        self.top_layout.addLayout(self.top_grid_layout)

        self.settings = Qt.QSettings("GNU Radio", "tx_ofdm_updated")

        try:
            if StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
                self.restoreGeometry(self.settings.value("geometry").toByteArray())
            else:
                self.restoreGeometry(self.settings.value("geometry"))
        except:
            pass

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((1, 1, 1, -1,),)
        self.pilot_carriers = pilot_carriers = ((-21, -7, 7, 21,),)
        self.payload_mod = payload_mod = digital.constellation_bpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (list(range(-26, -21)) + list(range(-20, -7)) + list(range(-6, 0)) + list(range(1, 7)) + list(range(8, 21)) + list(range(22, 27)),)
        self.length_tag_key = length_tag_key = "packet_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.tx_probe = tx_probe = 0
        self.sync_word2_0 = sync_word2_0 = [0j, 0j, 0j, 0j, 0j, 0j, (-1+0j), (-1+0j), (-1+0j), (-1+0j), (1+0j), (1+0j), (-1+0j), (-1+0j), (-1+0j), (1+0j), (-1+0j), (1+0j), (1+0j), (1 +0j), (1+0j), (1+0j), (-1+0j), (-1+0j), (-1+0j), (-1+0j), (-1+0j), (1+0j), (-1+0j), (-1+0j), (1+0j), (-1+0j), 0j, (1+0j), (-1+0j), (1+0j), (1+0j), (1+0j), (-1+0j), (1+0j), (1+0j), (1+0j), (-1+0j), (1+0j), (1+0j), (1+0j), (1+0j), (-1+0j), (1+0j), (-1+0j), (-1+0j), (-1+0j), (1+0j), (-1+0j), (1+0j), (-1+0j), (-1+0j), (-1+0j), (-1+0j), 0j, 0j, 0j, 0j, 0j]
        self.sync_word2 = sync_word2 = [0, 0, 0, 0, 0, 0, -1, -1, -1, -1, 1, 1, -1, -1, -1, 1, -1, 1, 1, 1, 1, 1, -1, -1, -1, -1, -1, 1, -1, -1, 1, -1, 0, 1, -1, 1, 1, 1, -1, 1, 1, 1, -1, 1, 1, 1, 1, -1, 1, -1, -1, -1, 1, -1, 1, -1, -1, -1, -1, 0, 0, 0, 0, 0]
        self.sync_word1_0 = sync_word1_0 = [0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 0., 0., 0., 0., 0.]
        self.sync_word1 = sync_word1 = [0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 0., 0., 0., 0., 0.]
        self.samp_rate = samp_rate = 50000
        self.rx_probe = rx_probe = 0
        self.rolloff = rolloff = 0
        self.pilot_symbols_0 = pilot_symbols_0 = ((1, 1, 1, -1,),)
        self.pilot_carriers_0 = pilot_carriers_0 = ((-21, -7, 7, 21,),)
        self.payload_mod_0 = payload_mod_0 = digital.constellation_qpsk()
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(fft_len, payload_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols, 1)
        self.packet_len_0 = packet_len_0 = 96
        self.packet_len = packet_len = 96
        self.output_signal = output_signal = 0
        self.og_signal_probe = og_signal_probe = 0
        self.occupied_carriers_0 = occupied_carriers_0 = (list(range(-26, -21)) + list(range(-20, -7)) + list(range(-6, 0)) + list(range(1, 7)) + list(range(8, 21)) + list(range(22, 27)),)
        self.length_tag_key_0 = length_tag_key_0 = "frame_len"
        self.input_signal = input_signal = 0
        self.header_mod_0 = header_mod_0 = digital.constellation_bpsk()
        self.header_formatter = header_formatter = digital.packet_header_ofdm(occupied_carriers, n_syms=1, len_tag_key=packet_length_tag_key, frame_len_tag_key=length_tag_key, bits_per_header_sym=header_mod.bits_per_symbol(), bits_per_payload_sym=payload_mod.bits_per_symbol(), scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(fft_len, header_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols)
        self.hdr_format = hdr_format = digital.header_format_ofdm(occupied_carriers, 1, length_tag_key,)
        self.fft_len_0 = fft_len_0 = 64
        self.decoded_probe = decoded_probe = 0

        ##################################################
        # Blocks
        ##################################################
        self.blocks_probe_signal_x_4 = blocks.probe_signal_c()
        self.blocks_probe_signal_x_3 = blocks.probe_signal_c()
        self.blocks_probe_signal_x_2 = blocks.probe_signal_b()
        self.blocks_probe_signal_x_0_1 = blocks.probe_signal_b()
        self.blocks_probe_signal_x_0_0_0 = blocks.probe_signal_c()
        self.blocks_probe_signal_x_0_0 = blocks.probe_signal_c()
        def _tx_probe_probe():
            global transmitted_data
            while True:

                val = self.blocks_probe_signal_x_0_0.level()
                transmitted_data = val
                try:
                    self.set_tx_probe(val)
                except AttributeError:
                    pass
                time.sleep(1.0 / (10))
        _tx_probe_thread = threading.Thread(target=_tx_probe_probe)
        _tx_probe_thread.daemon = True
        _tx_probe_thread.start()

        def _rx_probe_probe():
            global received_data
            while True:

                val = self.blocks_probe_signal_x_3.level()
                received_data = val
                try:
                    self.set_rx_probe(val)
                except AttributeError:
                    pass
                time.sleep(1.0 / (10))
        _rx_probe_thread = threading.Thread(target=_rx_probe_probe)
        _rx_probe_thread.daemon = True
        _rx_probe_thread.start()

        self.qtgui_time_sink_x_0_0 = qtgui.time_sink_c(
            1024, #size
            samp_rate, #samp_rate
            'Scope Plot', #name
            1 #number of inputs
        )
        self.qtgui_time_sink_x_0_0.set_update_time(0.10)
        self.qtgui_time_sink_x_0_0.set_y_axis(-1, 1)

        self.qtgui_time_sink_x_0_0.set_y_label('Amplitude', "")

        self.qtgui_time_sink_x_0_0.enable_tags(True)
        self.qtgui_time_sink_x_0_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, 0, "")
        self.qtgui_time_sink_x_0_0.enable_autoscale(True)
        self.qtgui_time_sink_x_0_0.enable_grid(False)
        self.qtgui_time_sink_x_0_0.enable_axis_labels(True)
        self.qtgui_time_sink_x_0_0.enable_control_panel(False)
        self.qtgui_time_sink_x_0_0.enable_stem_plot(False)


        labels = ['Scope Plot', '', '', '', '',
            '', '', '', '', '']
        widths = [1, 1, 1, 1, 1,
            1, 1, 1, 1, 1]
        colors = ['blue', 'red', 'green', 'black', 'cyan',
            'magenta', 'yellow', 'dark red', 'dark green', 'dark blue']
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
            1.0, 1.0, 1.0, 1.0, 1.0]
        styles = [1, 1, 1, 1, 1,
            1, 1, 1, 1, 1]
        markers = [-1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1]


        for i in range(2):
            if len(labels[i]) == 0:
                if (i % 2 == 0):
                    self.qtgui_time_sink_x_0_0.set_line_label(i, "Re{{Data {0}}}".format(i/2))
                else:
                    self.qtgui_time_sink_x_0_0.set_line_label(i, "Im{{Data {0}}}".format(i/2))
            else:
                self.qtgui_time_sink_x_0_0.set_line_label(i, labels[i])
            self.qtgui_time_sink_x_0_0.set_line_width(i, widths[i])
            self.qtgui_time_sink_x_0_0.set_line_color(i, colors[i])
            self.qtgui_time_sink_x_0_0.set_line_style(i, styles[i])
            self.qtgui_time_sink_x_0_0.set_line_marker(i, markers[i])
            self.qtgui_time_sink_x_0_0.set_line_alpha(i, alphas[i])

        self._qtgui_time_sink_x_0_0_win = sip.wrapinstance(self.qtgui_time_sink_x_0_0.pyqwidget(), Qt.QWidget)
        self.top_grid_layout.addWidget(self._qtgui_time_sink_x_0_0_win)
        self.qtgui_time_sink_x_0 = qtgui.time_sink_c(
            1024, #size
            samp_rate, #samp_rate
            'Scope Plot', #name
            1 #number of inputs
        )
        self.qtgui_time_sink_x_0.set_update_time(0.10)
        self.qtgui_time_sink_x_0.set_y_axis(-1, 1)

        self.qtgui_time_sink_x_0.set_y_label('Amplitude', "")

        self.qtgui_time_sink_x_0.enable_tags(True)
        self.qtgui_time_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, qtgui.TRIG_SLOPE_POS, 0.0, 0, 0, "")
        self.qtgui_time_sink_x_0.enable_autoscale(True)
        self.qtgui_time_sink_x_0.enable_grid(False)
        self.qtgui_time_sink_x_0.enable_axis_labels(True)
        self.qtgui_time_sink_x_0.enable_control_panel(False)
        self.qtgui_time_sink_x_0.enable_stem_plot(False)


        labels = ['Scope Plot', '', '', '', '',
            '', '', '', '', '']
        widths = [1, 1, 1, 1, 1,
            1, 1, 1, 1, 1]
        colors = ['blue', 'red', 'green', 'black', 'cyan',
            'magenta', 'yellow', 'dark red', 'dark green', 'dark blue']
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
            1.0, 1.0, 1.0, 1.0, 1.0]
        styles = [1, 1, 1, 1, 1,
            1, 1, 1, 1, 1]
        markers = [-1, -1, -1, -1, -1,
            -1, -1, -1, -1, -1]


        for i in range(2):
            if len(labels[i]) == 0:
                if (i % 2 == 0):
                    self.qtgui_time_sink_x_0.set_line_label(i, "Re{{Data {0}}}".format(i/2))
                else:
                    self.qtgui_time_sink_x_0.set_line_label(i, "Im{{Data {0}}}".format(i/2))
            else:
                self.qtgui_time_sink_x_0.set_line_label(i, labels[i])
            self.qtgui_time_sink_x_0.set_line_width(i, widths[i])
            self.qtgui_time_sink_x_0.set_line_color(i, colors[i])
            self.qtgui_time_sink_x_0.set_line_style(i, styles[i])
            self.qtgui_time_sink_x_0.set_line_marker(i, markers[i])
            self.qtgui_time_sink_x_0.set_line_alpha(i, alphas[i])

        self._qtgui_time_sink_x_0_win = sip.wrapinstance(self.qtgui_time_sink_x_0.pyqwidget(), Qt.QWidget)
        self.top_grid_layout.addWidget(self._qtgui_time_sink_x_0_win)
        self.qtgui_freq_sink_x_0 = qtgui.freq_sink_c(
            1024, #size
            firdes.WIN_BLACKMAN_hARRIS, #wintype
            0, #fc
            samp_rate, #bw
            'FFT Plot', #name
            1
        )
        self.qtgui_freq_sink_x_0.set_update_time(0.10)
        self.qtgui_freq_sink_x_0.set_y_axis(-140, 10)
        self.qtgui_freq_sink_x_0.set_y_label('Relative Gain', 'dB')
        self.qtgui_freq_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0, "")
        self.qtgui_freq_sink_x_0.enable_autoscale(True)
        self.qtgui_freq_sink_x_0.enable_grid(False)
        self.qtgui_freq_sink_x_0.set_fft_average(1.0)
        self.qtgui_freq_sink_x_0.enable_axis_labels(True)
        self.qtgui_freq_sink_x_0.enable_control_panel(False)



        labels = ['', '', '', '', '',
            '', '', '', '', '']
        widths = [1, 1, 1, 1, 1,
            1, 1, 1, 1, 1]
        colors = ["blue", "red", "green", "black", "cyan",
            "magenta", "yellow", "dark red", "dark green", "dark blue"]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
            1.0, 1.0, 1.0, 1.0, 1.0]

        for i in range(1):
            if len(labels[i]) == 0:
                self.qtgui_freq_sink_x_0.set_line_label(i, "Data {0}".format(i))
            else:
                self.qtgui_freq_sink_x_0.set_line_label(i, labels[i])
            self.qtgui_freq_sink_x_0.set_line_width(i, widths[i])
            self.qtgui_freq_sink_x_0.set_line_color(i, colors[i])
            self.qtgui_freq_sink_x_0.set_line_alpha(i, alphas[i])

        self._qtgui_freq_sink_x_0_win = sip.wrapinstance(self.qtgui_freq_sink_x_0.pyqwidget(), Qt.QWidget)
        self.top_grid_layout.addWidget(self._qtgui_freq_sink_x_0_win)
        def _output_signal_probe():
            global output_data
            while True:

                val = self.blocks_probe_signal_x_0_1.level()
                output_data = val
                try:
                    self.set_output_signal(val)
                except AttributeError:
                    pass
                # time.sleep(1.0 / (10))
                time.sleep(0.0911)
        _output_signal_thread = threading.Thread(target=_output_signal_probe)
        _output_signal_thread.daemon = True
        _output_signal_thread.start()

        def _og_signal_probe_probe():
            global encoded_data
            while True:

                val = self.blocks_probe_signal_x_0_0_0.level()
                encoded_data = val
                try:
                    self.set_og_signal_probe(val)
                except AttributeError:
                    pass
                
                time.sleep(1.0 / (10))
        _og_signal_probe_thread = threading.Thread(target=_og_signal_probe_probe)
        _og_signal_probe_thread.daemon = True
        _og_signal_probe_thread.start()

        def _input_signal_probe():
            global input_data
            while True:

                val = self.blocks_probe_signal_x_2.level()
                input_data = val
                try:
                    self.set_input_signal(val)
                except AttributeError:
                    pass
                
                time.sleep(1.0 / (10))
        _input_signal_thread = threading.Thread(target=_input_signal_probe)
        _input_signal_thread.daemon = True
        _input_signal_thread.start()

        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0_0 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, False, (), True, 1)
        self.digital_protocol_formatter_bb_0 = digital.protocol_formatter_bb(hdr_format, length_tag_key)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(header_formatter.base())
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(fft_len, fft_len//4, False, 0.9)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(fft_len, occupied_carriers, length_tag_key, packet_length_tag_key, 1, '', True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(fft_len, occupied_carriers, length_tag_key, '', 0, '', True)
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(payload_equalizer.base(), fft_len//4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(header_equalizer.base(), fft_len//4, length_tag_key, True, 1)
        self.digital_ofdm_cyclic_prefixer_0 = digital.ofdm_cyclic_prefixer(fft_len, fft_len + fft_len//4, rolloff, length_tag_key)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(sync_word1, sync_word2, 1, 0, 3, False)
        self.digital_ofdm_carrier_allocator_cvc_0 = digital.ofdm_carrier_allocator_cvc( fft_len, occupied_carriers, pilot_carriers, pilot_symbols, (sync_word1, sync_word2), length_tag_key, True)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3,
            fft_len,
            fft_len//4,
            length_tag_key,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            samp_rate,
            (),
            0)
        self.digital_crc32_bb_0_0 = digital.crc32_bb(True, packet_length_tag_key, True)
        self.digital_crc32_bb_0 = digital.crc32_bb(False, length_tag_key, True)
        self.digital_constellation_decoder_cb_1 = digital.constellation_decoder_cb(payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(header_mod.base())
        self.digital_chunks_to_symbols_xx_0_0 = digital.chunks_to_symbols_bc(payload_mod.points(), 1)
        self.digital_chunks_to_symbols_xx_0 = digital.chunks_to_symbols_bc(header_mod.points(), 1)
        def _decoded_probe_probe():
            global decoded_signal
            while True:

                val = self.blocks_probe_signal_x_4.level()
                decoded_signal = val
                try:
                    self.set_decoded_probe(val)
                except AttributeError:
                    pass
                
                # time.sleep(1.0 / (10))
                time.sleep(0.0911)
        _decoded_probe_thread = threading.Thread(target=_decoded_probe_probe)
        _decoded_probe_thread.daemon = True
        _decoded_probe_thread.start()

        self.channels_channel_model_0_0 = channels.channel_model(
            noise_voltage=0.15,
            frequency_offset=0 * 1.0/fft_len,
            epsilon=1.0,
            taps=[1.0 + 1.0j],
            noise_seed=0,
            block_tags=True)
        self.blocks_throttle_0_0 = blocks.throttle(gr.sizeof_gr_complex*1, samp_rate,True)
        self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex*1, samp_rate,True)
        self.blocks_tagged_stream_mux_0 = blocks.tagged_stream_mux(gr.sizeof_gr_complex*1, length_tag_key, 0)
        self.blocks_tag_gate_0 = blocks.tag_gate(gr.sizeof_gr_complex * 1, False)
        self.blocks_tag_gate_0.set_single_key("")
        self.blocks_tag_debug_1 = blocks.tag_debug(gr.sizeof_char*1, 'Rx Bytes', "")
        self.blocks_tag_debug_1.set_display(True)
        self.blocks_stream_to_tagged_stream_0 = blocks.stream_to_tagged_stream(gr.sizeof_char, 1, packet_len, length_tag_key)
        self.blocks_repack_bits_bb_0_1 = blocks.repack_bits_bb(payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True, gr.GR_LSB_FIRST)
        self.blocks_repack_bits_bb_0_0 = blocks.repack_bits_bb(8, 1, length_tag_key, False, gr.GR_LSB_FIRST)
        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(8, payload_mod.bits_per_symbol(), length_tag_key, False, gr.GR_LSB_FIRST)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_cc(0.05)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex*1, fft_len+fft_len//4)
        self.analog_random_source_x_0 = blocks.vector_source_b(list(map(int, numpy.random.randint(0, 255, 1000))), True)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(-2.0/fft_len)



        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, u'header_data'), (self.digital_header_payload_demux_0, u'header_data'))
        self.connect((self.analog_frequency_modulator_fc_0, 0), (self.blocks_multiply_xx_0, 0))
        self.connect((self.analog_random_source_x_0, 0), (self.blocks_probe_signal_x_2, 0))
        self.connect((self.analog_random_source_x_0, 0), (self.blocks_stream_to_tagged_stream_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_multiply_const_vxx_0, 0), (self.blocks_tag_gate_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0), (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0), (self.digital_chunks_to_symbols_xx_0_0, 0))
        self.connect((self.blocks_repack_bits_bb_0_0, 0), (self.digital_chunks_to_symbols_xx_0, 0))
        self.connect((self.blocks_repack_bits_bb_0_1, 0), (self.blocks_probe_signal_x_0_1, 0))
        self.connect((self.blocks_repack_bits_bb_0_1, 0), (self.digital_crc32_bb_0_0, 0))
        self.connect((self.blocks_stream_to_tagged_stream_0, 0), (self.digital_crc32_bb_0, 0))
        self.connect((self.blocks_tag_gate_0, 0), (self.blocks_throttle_0, 0))
        self.connect((self.blocks_tagged_stream_mux_0, 0), (self.blocks_probe_signal_x_0_0_0, 0))
        self.connect((self.blocks_tagged_stream_mux_0, 0), (self.digital_ofdm_carrier_allocator_cvc_0, 0))
        self.connect((self.blocks_tagged_stream_mux_0, 0), (self.qtgui_time_sink_x_0_0, 0))
        self.connect((self.blocks_throttle_0, 0), (self.blocks_probe_signal_x_0_0, 0))
        self.connect((self.blocks_throttle_0, 0), (self.channels_channel_model_0_0, 0))
        self.connect((self.blocks_throttle_0, 0), (self.qtgui_freq_sink_x_0, 0))
        self.connect((self.blocks_throttle_0, 0), (self.qtgui_time_sink_x_0, 0))
        self.connect((self.blocks_throttle_0_0, 0), (self.blocks_delay_0, 0))
        self.connect((self.blocks_throttle_0_0, 0), (self.blocks_probe_signal_x_3, 0))
        self.connect((self.blocks_throttle_0_0, 0), (self.digital_ofdm_sync_sc_cfb_0, 0))
        self.connect((self.channels_channel_model_0_0, 0), (self.blocks_throttle_0_0, 0))
        self.connect((self.digital_chunks_to_symbols_xx_0, 0), (self.blocks_tagged_stream_mux_0, 0))
        self.connect((self.digital_chunks_to_symbols_xx_0_0, 0), (self.blocks_tagged_stream_mux_0, 1))
        self.connect((self.digital_constellation_decoder_cb_0, 0), (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1, 0), (self.blocks_repack_bits_bb_0_1, 0))
        self.connect((self.digital_crc32_bb_0, 0), (self.blocks_repack_bits_bb_0, 0))
        self.connect((self.digital_crc32_bb_0, 0), (self.digital_protocol_formatter_bb_0, 0))
        self.connect((self.digital_crc32_bb_0_0, 0), (self.blocks_tag_debug_1, 0))
        self.connect((self.digital_header_payload_demux_0, 0), (self.fft_vxx_0_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1), (self.fft_vxx_1, 0))
        self.connect((self.digital_ofdm_carrier_allocator_cvc_0, 0), (self.fft_vxx_0, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0), (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_cyclic_prefixer_0, 0), (self.blocks_multiply_const_vxx_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0), (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0), (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0), (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0), (self.blocks_probe_signal_x_4, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0), (self.digital_constellation_decoder_cb_1, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0), (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1), (self.digital_header_payload_demux_0, 1))
        self.connect((self.digital_protocol_formatter_bb_0, 0), (self.blocks_repack_bits_bb_0_0, 0))
        self.connect((self.fft_vxx_0, 0), (self.digital_ofdm_cyclic_prefixer_0, 0))
        self.connect((self.fft_vxx_0_0, 0), (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_1, 0), (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
Example #17
0
    def __init__(self,
                 fft_len=_def_fft_len,
                 cp_len=_def_cp_len,
                 frame_length_tag_key=_def_frame_length_tag_key,
                 packet_length_tag_key=_def_packet_length_tag_key,
                 packet_num_tag_key=_def_packet_num_tag_key,
                 occupied_carriers=_def_occupied_carriers,
                 pilot_carriers=_def_pilot_carriers,
                 pilot_symbols=_def_pilot_symbols,
                 bps_header=1,
                 bps_payload=1,
                 sync_word1=None,
                 sync_word2=None,
                 debug_log=False,
                 scramble_bits=False):
        gr.hier_block2.__init__(self, "ofdm_rx",
                                gr.io_signature(1, 1, gr.sizeof_gr_complex),
                                gr.io_signature(2, 2, gr.sizeof_char))
        ### Param init / sanity check ########################################
        self.fft_len = fft_len
        self.cp_len = cp_len
        self.frame_length_tag_key = frame_length_tag_key
        self.packet_length_tag_key = packet_length_tag_key
        self.occupied_carriers = occupied_carriers
        self.bps_header = bps_header
        self.bps_payload = bps_payload
        n_sync_words = 1
        if sync_word1 is None:
            self.sync_word1 = _make_sync_word1(fft_len, occupied_carriers,
                                               pilot_carriers)
        else:
            if len(sync_word1) != self.fft_len:
                raise ValueError(
                    "Length of sync sequence(s) must be FFT length.")
            self.sync_word1 = sync_word1
        self.sync_word2 = ()
        if sync_word2 is None:
            self.sync_word2 = _make_sync_word2(fft_len, occupied_carriers,
                                               pilot_carriers)
            n_sync_words = 2
        elif len(sync_word2):
            if len(sync_word2) != fft_len:
                raise ValueError(
                    "Length of sync sequence(s) must be FFT length.")
            self.sync_word2 = sync_word2
            n_sync_words = 2
        if scramble_bits:
            self.scramble_seed = 0x7f
        else:
            self.scramble_seed = 0x00  # We deactivate the scrambler by init'ing it with zeros
        ### Sync ############################################################
        sync_detect = digital.ofdm_sync_sc_cfb(fft_len, cp_len)
        delay = blocks.delay(gr.sizeof_gr_complex, fft_len + cp_len)
        oscillator = analog.frequency_modulator_fc(-2.0 / fft_len)
        mixer = blocks.multiply_cc()
        hpd = digital.header_payload_demux(
            n_sync_words +
            1,  # Number of OFDM symbols before payload (sync + 1 sym header)
            fft_len,
            cp_len,  # FFT length, guard interval
            frame_length_tag_key,  # Frame length tag key
            "",  # We're not using trigger tags
            True  # One output item is one OFDM symbol (False would output complex scalars)
        )
        self.connect(self, sync_detect)
        self.connect(self, delay, (mixer, 0), (hpd, 0))
        self.connect((sync_detect, 0), oscillator, (mixer, 1))
        self.connect((sync_detect, 1), (hpd, 1))
        if debug_log:
            self.connect((sync_detect, 0),
                         blocks.file_sink(gr.sizeof_float, 'freq-offset.dat'))
            self.connect((sync_detect, 1),
                         blocks.file_sink(gr.sizeof_char, 'sync-detect.dat'))
        ### Header demodulation ##############################################
        header_fft = fft.fft_vcc(self.fft_len, True, (), True)
        chanest = digital.ofdm_chanest_vcvc(self.sync_word1, self.sync_word2,
                                            1)
        header_constellation = _get_constellation(bps_header)
        header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len,
            header_constellation.base(),
            occupied_carriers,
            pilot_carriers,
            pilot_symbols,
            symbols_skipped=0,
        )
        header_eq = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(),
            cp_len,
            self.frame_length_tag_key,
            True,
            1  # Header is 1 symbol long
        )
        header_serializer = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, self.frame_length_tag_key)
        header_demod = digital.constellation_decoder_cb(
            header_constellation.base())
        header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            1,
            packet_length_tag_key,
            frame_length_tag_key,
            packet_num_tag_key,
            bps_header,
            bps_payload,
            scramble_header=scramble_bits)
        header_parser = digital.packet_headerparser_b(
            header_formatter.formatter())
        self.connect((hpd, 0), header_fft, chanest, header_eq,
                     header_serializer, header_demod, header_parser)
        self.msg_connect(header_parser, "header_data", hpd, "header_data")
        if debug_log:
            self.connect((chanest, 1),
                         blocks.file_sink(gr.sizeof_gr_complex * fft_len,
                                          'channel-estimate.dat'))
            self.connect((chanest, 0),
                         blocks.file_sink(gr.sizeof_gr_complex * fft_len,
                                          'post-hdr-chanest.dat'))
            self.connect((chanest, 0),
                         blocks.tag_debug(gr.sizeof_gr_complex * fft_len,
                                          'post-hdr-chanest'))
            self.connect(
                header_eq,
                blocks.file_sink(gr.sizeof_gr_complex * fft_len,
                                 'post-hdr-eq.dat'))
            self.connect(
                header_serializer,
                blocks.file_sink(gr.sizeof_gr_complex,
                                 'post-hdr-serializer.dat'))
            self.connect(header_descrambler,
                         blocks.file_sink(1, 'post-hdr-demod.dat'))
        ### Payload demod ####################################################
        payload_fft = fft.fft_vcc(self.fft_len, True, (), True)
        payload_constellation = _get_constellation(bps_payload)
        payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len,
            payload_constellation.base(),
            occupied_carriers,
            pilot_carriers,
            pilot_symbols,
            symbols_skipped=1,  # (that was already in the header)
            alpha=0.1)
        payload_eq = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), cp_len, self.frame_length_tag_key)
        payload_serializer = digital.ofdm_serializer_vcc(
            fft_len,
            occupied_carriers,
            self.frame_length_tag_key,
            self.packet_length_tag_key,
            1  # Skip 1 symbol (that was already in the header)
        )
        payload_demod = digital.constellation_decoder_cb(
            payload_constellation.base())
        self.payload_descrambler = digital.additive_scrambler_bb(
            0x8a,
            self.scramble_seed,
            7,
            0,  # Don't reset after fixed length
            bits_per_byte=8,  # This is after packing
            reset_tag_key=self.packet_length_tag_key)
        payload_pack = blocks.repack_bits_bb(bps_payload, 8,
                                             self.packet_length_tag_key, True)
        self.crc = digital.crc32_bb(True, self.packet_length_tag_key)
        self.connect((hpd, 1), payload_fft, payload_eq, payload_serializer,
                     payload_demod, payload_pack, self.payload_descrambler,
                     self.crc, self)
        self.connect((sync_detect, 1), (self, 1))

        # Add snr logger
        #snr = mofdm.ofdm_subchan_snr_vcvf(self.fft_len, self.cp_len, self.frame_length_tag_key,
        #    self.occupied_carriers, pilot_carriers, pilot_symbols, 0, True, debug=False)
        #self.connect(payload_fft, snr, blocks.file_sink(gr.sizeof_float * fft_len, 'perchan-snr.dat'))

        #rx_data = mofdm.ofdm_data_sink(self.packet_length_tag_key)
        #self.connect(self.payload_descrambler, rx_data)

        if debug_log:
            self.connect((hpd, 1),
                         blocks.tag_debug(gr.sizeof_gr_complex * fft_len,
                                          'post-hpd'))
            self.connect(
                payload_fft,
                blocks.file_sink(gr.sizeof_gr_complex * fft_len,
                                 'post-payload-fft.dat'))
            self.connect(
                payload_eq,
                blocks.file_sink(gr.sizeof_gr_complex * fft_len,
                                 'post-payload-eq.dat'))
            self.connect(
                payload_serializer,
                blocks.file_sink(gr.sizeof_gr_complex,
                                 'post-payload-serializer.dat'))
            self.connect(payload_demod,
                         blocks.file_sink(1, 'post-payload-demod.dat'))
            self.connect(payload_pack,
                         blocks.file_sink(1, 'post-payload-pack.dat'))
            self.connect(crc, blocks.file_sink(1, 'post-payload-crc.dat'))
Example #18
0
    def __init__(self):
        gr.top_block.__init__(self, "SECUNDARY")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("SECUNDARY")
        qtgui.util.check_set_qss()
        try:
            self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
        except:
            pass
        self.top_scroll_layout = Qt.QVBoxLayout()
        self.setLayout(self.top_scroll_layout)
        self.top_scroll = Qt.QScrollArea()
        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
        self.top_scroll_layout.addWidget(self.top_scroll)
        self.top_scroll.setWidgetResizable(True)
        self.top_widget = Qt.QWidget()
        self.top_scroll.setWidget(self.top_widget)
        self.top_layout = Qt.QVBoxLayout(self.top_widget)
        self.top_grid_layout = Qt.QGridLayout()
        self.top_layout.addLayout(self.top_grid_layout)

        self.settings = Qt.QSettings("GNU Radio", "secundary")

        try:
            if StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
                self.restoreGeometry(
                    self.settings.value("geometry").toByteArray())
            else:
                self.restoreGeometry(self.settings.value("geometry"))
        except:
            pass

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((
            1,
            1,
            1,
            -1,
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -21,
            -7,
            7,
            21,
        ), )
        self.payload_mod = payload_mod = digital.constellation_bpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            list(range(-26, -21)) + list(range(-20, -7)) + list(range(-6, 0)) +
            list(range(1, 7)) + list(range(8, 21)) + list(range(22, 27)), )
        self.length_tag_key = length_tag_key = "packet_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.tx_gain = tx_gain = 50
        self.sync_word2 = sync_word2 = [
            0, 0, 0, 0, 0, 0, -1, -1, -1, -1, 1, 1, -1, -1, -1, 1, -1, 1, 1, 1,
            1, 1, -1, -1, -1, -1, -1, 1, -1, -1, 1, -1, 0, 1, -1, 1, 1, 1, -1,
            1, 1, 1, -1, 1, 1, 1, 1, -1, 1, -1, -1, -1, 1, -1, 1, -1, -1, -1,
            -1, 0, 0, 0, 0, 0
        ]
        self.sync_word1 = sync_word1 = [
            0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
            -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            0., 0., 0., 0., 0.
        ]
        self.samp_rate = samp_rate = 1000000
        self.rx_gain = rx_gain = 50
        self.rolloff = rolloff = 0
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 1)
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols)
        self.hdr_format = hdr_format = digital.header_format_ofdm(
            occupied_carriers,
            1,
            length_tag_key,
        )

        ##################################################
        # Blocks
        ##################################################
        self._tx_gain_tool_bar = Qt.QToolBar(self)
        self._tx_gain_tool_bar.addWidget(Qt.QLabel('tx_gain' + ": "))
        self._tx_gain_line_edit = Qt.QLineEdit(str(self.tx_gain))
        self._tx_gain_tool_bar.addWidget(self._tx_gain_line_edit)
        self._tx_gain_line_edit.returnPressed.connect(lambda: self.set_tx_gain(
            eng_notation.str_to_num(str(self._tx_gain_line_edit.text()))))
        self.top_layout.addWidget(self._tx_gain_tool_bar)
        self._rx_gain_tool_bar = Qt.QToolBar(self)
        self._rx_gain_tool_bar.addWidget(Qt.QLabel('rx_gain' + ": "))
        self._rx_gain_line_edit = Qt.QLineEdit(str(self.rx_gain))
        self._rx_gain_tool_bar.addWidget(self._rx_gain_line_edit)
        self._rx_gain_line_edit.returnPressed.connect(lambda: self.set_rx_gain(
            eng_notation.str_to_num(str(self._rx_gain_line_edit.text()))))
        self.top_layout.addWidget(self._rx_gain_tool_bar)
        self.uhd_usrp_source_0_0_1 = uhd.usrp_source(
            ",".join(('serial=F5C243', "")),
            uhd.stream_args(
                cpu_format="fc32",
                args='',
                channels=list(range(0, 1)),
            ),
        )
        self.uhd_usrp_source_0_0_1.set_center_freq(2400000000, 0)
        self.uhd_usrp_source_0_0_1.set_gain(rx_gain, 0)
        self.uhd_usrp_source_0_0_1.set_antenna('RX2', 0)
        self.uhd_usrp_source_0_0_1.set_samp_rate(samp_rate)
        self.uhd_usrp_source_0_0_1.set_time_unknown_pps(uhd.time_spec())
        self.uhd_usrp_source_0_0 = uhd.usrp_source(
            ",".join(('serial=F5C234', "")),
            uhd.stream_args(
                cpu_format="fc32",
                args='',
                channels=list(range(0, 1)),
            ),
        )
        self.uhd_usrp_source_0_0.set_center_freq(2450000000, 0)
        self.uhd_usrp_source_0_0.set_gain(rx_gain, 0)
        self.uhd_usrp_source_0_0.set_antenna('RX2', 0)
        self.uhd_usrp_source_0_0.set_samp_rate(samp_rate)
        self.uhd_usrp_source_0_0.set_time_unknown_pps(uhd.time_spec())
        self.uhd_usrp_sink_0_0 = uhd.usrp_sink(
            ",".join(('serial=F5C234', "")),
            uhd.stream_args(
                cpu_format="fc32",
                args='',
                channels=list(range(0, 1)),
            ),
            length_tag_key,
        )
        self.uhd_usrp_sink_0_0.set_center_freq(2400000000, 0)
        self.uhd_usrp_sink_0_0.set_gain(tx_gain, 0)
        self.uhd_usrp_sink_0_0.set_antenna('TX/RX', 0)
        self.uhd_usrp_sink_0_0.set_samp_rate(samp_rate)
        self.uhd_usrp_sink_0_0.set_time_unknown_pps(uhd.time_spec())
        self.uhd_usrp_sink_0 = uhd.usrp_sink(
            ",".join(('serial=F5C243', "")),
            uhd.stream_args(
                cpu_format="fc32",
                args='',
                channels=list(range(0, 1)),
            ),
            length_tag_key,
        )
        self.uhd_usrp_sink_0.set_center_freq(2450000000, 0)
        self.uhd_usrp_sink_0.set_gain(tx_gain, 0)
        self.uhd_usrp_sink_0.set_antenna('TX/RX', 0)
        self.uhd_usrp_sink_0.set_samp_rate(samp_rate)
        self.uhd_usrp_sink_0.set_time_unknown_pps(uhd.time_spec())
        self.qtgui_sink_x_0_0 = qtgui.sink_c(
            64,  #fftsize
            firdes.WIN_BLACKMAN_hARRIS,  #wintype
            4000000000,  #fc
            50000,  #bw
            'SECUNDARY RX',  #name
            True,  #plotfreq
            True,  #plotwaterfall
            True,  #plottime
            True  #plotconst
        )
        self.qtgui_sink_x_0_0.set_update_time(1.0 / 10)
        self._qtgui_sink_x_0_0_win = sip.wrapinstance(
            self.qtgui_sink_x_0_0.pyqwidget(), Qt.QWidget)

        self.qtgui_sink_x_0_0.enable_rf_freq(False)

        self.top_layout.addWidget(self._qtgui_sink_x_0_0_win)
        self.fft_vxx_1_0_0_0_0_0 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_1_0_0_0_0 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0_0_0_0_0_0_0 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0_0_0_0_0_0 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0_0 = fft.fft_vcc(fft_len, False, (), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, False, (), True, 1)
        self.epy_block_0_0 = epy_block_0_0.mac()
        self.epy_block_0 = epy_block_0.mac()
        self.digital_protocol_formatter_bb_0_0 = digital.protocol_formatter_bb(
            hdr_format, length_tag_key)
        self.digital_protocol_formatter_bb_0 = digital.protocol_formatter_bb(
            hdr_format, length_tag_key)
        self.digital_packet_headerparser_b_0_0_0_0_0_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_packet_headerparser_b_0_0_0_0_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_ofdm_sync_sc_cfb_0_0_0_0_0_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len // 4, False, 0.9)
        self.digital_ofdm_sync_sc_cfb_0_0_0_0_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len // 4, False, 0.9)
        self.digital_ofdm_serializer_vcc_payload_0_0_0_0_0 = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, '', True)
        self.digital_ofdm_serializer_vcc_payload_0_0_0_0 = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, '', True)
        self.digital_ofdm_serializer_vcc_header_0_0_0_0_0 = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, '', 0, '', True)
        self.digital_ofdm_serializer_vcc_header_0_0_0_0 = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, '', 0, '', True)
        self.digital_ofdm_frame_equalizer_vcvc_1_0_0_0_0_0 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len // 4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_1_0_0_0_0 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len // 4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0_0_0_0_0_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len // 4, length_tag_key, True, 1)
        self.digital_ofdm_frame_equalizer_vcvc_0_0_0_0_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len // 4, length_tag_key, True, 1)
        self.digital_ofdm_cyclic_prefixer_0_0 = digital.ofdm_cyclic_prefixer(
            fft_len, fft_len + fft_len // 4, rolloff, length_tag_key)
        self.digital_ofdm_cyclic_prefixer_0 = digital.ofdm_cyclic_prefixer(
            fft_len, fft_len + fft_len // 4, rolloff, length_tag_key)
        self.digital_ofdm_chanest_vcvc_0_0_0_0_0_0 = digital.ofdm_chanest_vcvc(
            sync_word1, sync_word2, 1, 0, 3, False)
        self.digital_ofdm_chanest_vcvc_0_0_0_0_0 = digital.ofdm_chanest_vcvc(
            sync_word1, sync_word2, 1, 0, 3, False)
        self.digital_ofdm_carrier_allocator_cvc_0_0 = digital.ofdm_carrier_allocator_cvc(
            fft_len, occupied_carriers, pilot_carriers, pilot_symbols,
            (sync_word1, sync_word2), length_tag_key, True)
        self.digital_ofdm_carrier_allocator_cvc_0 = digital.ofdm_carrier_allocator_cvc(
            fft_len, occupied_carriers, pilot_carriers, pilot_symbols,
            (sync_word1, sync_word2), length_tag_key, True)
        self.digital_header_payload_demux_0_0_0_0_0_0 = digital.header_payload_demux(
            3, fft_len, fft_len // 4, length_tag_key, "", True,
            gr.sizeof_gr_complex, "rx_time", samp_rate, (), 0)
        self.digital_header_payload_demux_0_0_0_0_0 = digital.header_payload_demux(
            3, fft_len, fft_len // 4, length_tag_key, "", True,
            gr.sizeof_gr_complex, "rx_time", samp_rate, (), 0)
        self.digital_constellation_decoder_cb_1_0_0_0_0_0 = digital.constellation_decoder_cb(
            payload_mod.base())
        self.digital_constellation_decoder_cb_1_0_0_0_0 = digital.constellation_decoder_cb(
            payload_mod.base())
        self.digital_constellation_decoder_cb_0_0_0_0_0_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.digital_constellation_decoder_cb_0_0_0_0_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.digital_chunks_to_symbols_xx_0_1 = digital.chunks_to_symbols_bc(
            header_mod.points(), 1)
        self.digital_chunks_to_symbols_xx_0_0_0 = digital.chunks_to_symbols_bc(
            payload_mod.points(), 1)
        self.digital_chunks_to_symbols_xx_0_0 = digital.chunks_to_symbols_bc(
            payload_mod.points(), 1)
        self.digital_chunks_to_symbols_xx_0 = digital.chunks_to_symbols_bc(
            header_mod.points(), 1)
        self.blocks_tagged_stream_to_pdu_0_0_0_0 = blocks.tagged_stream_to_pdu(
            blocks.byte_t, length_tag_key)
        self.blocks_tagged_stream_to_pdu_0_0_0 = blocks.tagged_stream_to_pdu(
            blocks.byte_t, length_tag_key)
        self.blocks_tagged_stream_mux_0_0 = blocks.tagged_stream_mux(
            gr.sizeof_gr_complex * 1, length_tag_key, 0)
        self.blocks_tagged_stream_mux_0 = blocks.tagged_stream_mux(
            gr.sizeof_gr_complex * 1, length_tag_key, 0)
        self.blocks_tag_gate_0_0 = blocks.tag_gate(gr.sizeof_gr_complex * 1,
                                                   True)
        self.blocks_tag_gate_0_0.set_single_key("")
        self.blocks_tag_gate_0 = blocks.tag_gate(gr.sizeof_gr_complex * 1,
                                                 True)
        self.blocks_tag_gate_0.set_single_key("")
        self.blocks_repack_bits_bb_0_2_0 = blocks.repack_bits_bb(
            8, payload_mod.bits_per_symbol(), length_tag_key, False,
            gr.GR_LSB_FIRST)
        self.blocks_repack_bits_bb_0_2 = blocks.repack_bits_bb(
            8, payload_mod.bits_per_symbol(), length_tag_key, False,
            gr.GR_LSB_FIRST)
        self.blocks_repack_bits_bb_0_1_0_0_0_0_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True,
            gr.GR_LSB_FIRST)
        self.blocks_repack_bits_bb_0_1_0_0_0_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True,
            gr.GR_LSB_FIRST)
        self.blocks_repack_bits_bb_0_0_1_0 = blocks.repack_bits_bb(
            8, 1, length_tag_key, False, gr.GR_LSB_FIRST)
        self.blocks_repack_bits_bb_0_0_1 = blocks.repack_bits_bb(
            8, 1, length_tag_key, False, gr.GR_LSB_FIRST)
        self.blocks_pdu_to_tagged_stream_0_0_0 = blocks.pdu_to_tagged_stream(
            blocks.byte_t, length_tag_key)
        self.blocks_pdu_to_tagged_stream_0_0 = blocks.pdu_to_tagged_stream(
            blocks.byte_t, length_tag_key)
        self.blocks_multiply_xx_0_0_0_0_0_0 = blocks.multiply_vcc(1)
        self.blocks_multiply_xx_0_0_0_0_0 = blocks.multiply_vcc(1)
        self.blocks_multiply_const_vxx_0_0 = blocks.multiply_const_cc(50e-3)
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_cc(50e-3)
        self.blocks_message_strobe_0 = blocks.message_strobe(
            pmt.intern("TEST"), 1000)
        self.blocks_message_debug_0 = blocks.message_debug()
        self.blocks_delay_0_0_0_0_0_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                                     fft_len + fft_len // 4)
        self.blocks_delay_0_0_0_0_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                                   fft_len + fft_len // 4)
        self.analog_frequency_modulator_fc_0_0_0_0_0_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)
        self.analog_frequency_modulator_fc_0_0_0_0_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.blocks_message_strobe_0, 'strobe'),
                         (self.epy_block_0_0, 'time_unit'))
        self.msg_connect((self.blocks_tagged_stream_to_pdu_0_0_0, 'pdus'),
                         (self.blocks_message_debug_0, 'print_pdu'))
        self.msg_connect((self.blocks_tagged_stream_to_pdu_0_0_0, 'pdus'),
                         (self.epy_block_0_0, 'ack'))
        self.msg_connect((self.blocks_tagged_stream_to_pdu_0_0_0_0, 'pdus'),
                         (self.epy_block_0, 'packet'))
        self.msg_connect(
            (self.digital_packet_headerparser_b_0_0_0_0_0, 'header_data'),
            (self.digital_header_payload_demux_0_0_0_0_0, 'header_data'))
        self.msg_connect(
            (self.digital_packet_headerparser_b_0_0_0_0_0_0, 'header_data'),
            (self.digital_header_payload_demux_0_0_0_0_0_0, 'header_data'))
        self.msg_connect((self.epy_block_0, 'ack'),
                         (self.blocks_pdu_to_tagged_stream_0_0, 'pdus'))
        self.msg_connect((self.epy_block_0_0, 'transmit_packet'),
                         (self.blocks_pdu_to_tagged_stream_0_0_0, 'pdus'))
        self.msg_connect((self.epy_block_0_0, 'channel_up'),
                         (self.uhd_usrp_sink_0_0, 'command'))
        self.msg_connect((self.epy_block_0_0, 'channel_down'),
                         (self.uhd_usrp_source_0_0, 'command'))
        self.connect((self.analog_frequency_modulator_fc_0_0_0_0_0, 0),
                     (self.blocks_multiply_xx_0_0_0_0_0, 0))
        self.connect((self.analog_frequency_modulator_fc_0_0_0_0_0_0, 0),
                     (self.blocks_multiply_xx_0_0_0_0_0_0, 0))
        self.connect((self.blocks_delay_0_0_0_0_0, 0),
                     (self.blocks_multiply_xx_0_0_0_0_0, 1))
        self.connect((self.blocks_delay_0_0_0_0_0_0, 0),
                     (self.blocks_multiply_xx_0_0_0_0_0_0, 1))
        self.connect((self.blocks_multiply_const_vxx_0, 0),
                     (self.blocks_tag_gate_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0_0, 0),
                     (self.blocks_tag_gate_0_0, 0))
        self.connect((self.blocks_multiply_xx_0_0_0_0_0, 0),
                     (self.digital_header_payload_demux_0_0_0_0_0, 0))
        self.connect((self.blocks_multiply_xx_0_0_0_0_0_0, 0),
                     (self.digital_header_payload_demux_0_0_0_0_0_0, 0))
        self.connect((self.blocks_pdu_to_tagged_stream_0_0, 0),
                     (self.blocks_repack_bits_bb_0_2, 0))
        self.connect((self.blocks_pdu_to_tagged_stream_0_0, 0),
                     (self.digital_protocol_formatter_bb_0, 0))
        self.connect((self.blocks_pdu_to_tagged_stream_0_0_0, 0),
                     (self.blocks_repack_bits_bb_0_2_0, 0))
        self.connect((self.blocks_pdu_to_tagged_stream_0_0_0, 0),
                     (self.digital_protocol_formatter_bb_0_0, 0))
        self.connect((self.blocks_repack_bits_bb_0_0_1, 0),
                     (self.digital_chunks_to_symbols_xx_0, 0))
        self.connect((self.blocks_repack_bits_bb_0_0_1_0, 0),
                     (self.digital_chunks_to_symbols_xx_0_1, 0))
        self.connect((self.blocks_repack_bits_bb_0_1_0_0_0_0, 0),
                     (self.blocks_tagged_stream_to_pdu_0_0_0, 0))
        self.connect((self.blocks_repack_bits_bb_0_1_0_0_0_0_0, 0),
                     (self.blocks_tagged_stream_to_pdu_0_0_0_0, 0))
        self.connect((self.blocks_repack_bits_bb_0_2, 0),
                     (self.digital_chunks_to_symbols_xx_0_0, 0))
        self.connect((self.blocks_repack_bits_bb_0_2_0, 0),
                     (self.digital_chunks_to_symbols_xx_0_0_0, 0))
        self.connect((self.blocks_tag_gate_0, 0), (self.uhd_usrp_sink_0, 0))
        self.connect((self.blocks_tag_gate_0_0, 0),
                     (self.uhd_usrp_sink_0_0, 0))
        self.connect((self.blocks_tagged_stream_mux_0, 0),
                     (self.digital_ofdm_carrier_allocator_cvc_0, 0))
        self.connect((self.blocks_tagged_stream_mux_0_0, 0),
                     (self.digital_ofdm_carrier_allocator_cvc_0_0, 0))
        self.connect((self.digital_chunks_to_symbols_xx_0, 0),
                     (self.blocks_tagged_stream_mux_0, 0))
        self.connect((self.digital_chunks_to_symbols_xx_0_0, 0),
                     (self.blocks_tagged_stream_mux_0, 1))
        self.connect((self.digital_chunks_to_symbols_xx_0_0_0, 0),
                     (self.blocks_tagged_stream_mux_0_0, 1))
        self.connect((self.digital_chunks_to_symbols_xx_0_1, 0),
                     (self.blocks_tagged_stream_mux_0_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0_0_0_0_0, 0),
                     (self.digital_packet_headerparser_b_0_0_0_0_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0_0_0_0_0_0, 0),
                     (self.digital_packet_headerparser_b_0_0_0_0_0_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1_0_0_0_0, 0),
                     (self.blocks_repack_bits_bb_0_1_0_0_0_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1_0_0_0_0_0, 0),
                     (self.blocks_repack_bits_bb_0_1_0_0_0_0_0, 0))
        self.connect((self.digital_header_payload_demux_0_0_0_0_0, 0),
                     (self.fft_vxx_0_0_0_0_0_0, 0))
        self.connect((self.digital_header_payload_demux_0_0_0_0_0, 1),
                     (self.fft_vxx_1_0_0_0_0, 0))
        self.connect((self.digital_header_payload_demux_0_0_0_0_0_0, 0),
                     (self.fft_vxx_0_0_0_0_0_0_0, 0))
        self.connect((self.digital_header_payload_demux_0_0_0_0_0_0, 1),
                     (self.fft_vxx_1_0_0_0_0_0, 0))
        self.connect((self.digital_ofdm_carrier_allocator_cvc_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_ofdm_carrier_allocator_cvc_0_0, 0),
                     (self.fft_vxx_0_0, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0_0_0_0_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0_0_0_0_0, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0_0_0_0_0_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0_0_0_0_0_0, 0))
        self.connect((self.digital_ofdm_cyclic_prefixer_0, 0),
                     (self.blocks_multiply_const_vxx_0, 0))
        self.connect((self.digital_ofdm_cyclic_prefixer_0_0, 0),
                     (self.blocks_multiply_const_vxx_0_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0_0_0_0_0, 0),
                     (self.digital_ofdm_serializer_vcc_header_0_0_0_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0_0_0_0_0_0, 0),
                     (self.digital_ofdm_serializer_vcc_header_0_0_0_0_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1_0_0_0_0, 0),
                     (self.digital_ofdm_serializer_vcc_payload_0_0_0_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1_0_0_0_0_0, 0),
                     (self.digital_ofdm_serializer_vcc_payload_0_0_0_0_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header_0_0_0_0, 0),
                     (self.digital_constellation_decoder_cb_0_0_0_0_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header_0_0_0_0_0, 0),
                     (self.digital_constellation_decoder_cb_0_0_0_0_0_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload_0_0_0_0, 0),
                     (self.digital_constellation_decoder_cb_1_0_0_0_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload_0_0_0_0_0, 0),
                     (self.digital_constellation_decoder_cb_1_0_0_0_0_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0_0_0_0_0, 0),
                     (self.analog_frequency_modulator_fc_0_0_0_0_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0_0_0_0_0, 1),
                     (self.digital_header_payload_demux_0_0_0_0_0, 1))
        self.connect((self.digital_ofdm_sync_sc_cfb_0_0_0_0_0_0, 0),
                     (self.analog_frequency_modulator_fc_0_0_0_0_0_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0_0_0_0_0_0, 1),
                     (self.digital_header_payload_demux_0_0_0_0_0_0, 1))
        self.connect((self.digital_protocol_formatter_bb_0, 0),
                     (self.blocks_repack_bits_bb_0_0_1, 0))
        self.connect((self.digital_protocol_formatter_bb_0_0, 0),
                     (self.blocks_repack_bits_bb_0_0_1_0, 0))
        self.connect((self.fft_vxx_0, 0),
                     (self.digital_ofdm_cyclic_prefixer_0, 0))
        self.connect((self.fft_vxx_0_0, 0),
                     (self.digital_ofdm_cyclic_prefixer_0_0, 0))
        self.connect((self.fft_vxx_0_0_0_0_0_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0_0_0_0_0, 0))
        self.connect((self.fft_vxx_0_0_0_0_0_0_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0_0_0_0_0_0, 0))
        self.connect((self.fft_vxx_1_0_0_0_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1_0_0_0_0, 0))
        self.connect((self.fft_vxx_1_0_0_0_0_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1_0_0_0_0_0, 0))
        self.connect((self.uhd_usrp_source_0_0, 0),
                     (self.blocks_delay_0_0_0_0_0, 0))
        self.connect((self.uhd_usrp_source_0_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_0_0_0_0_0, 0))
        self.connect((self.uhd_usrp_source_0_0, 0), (self.qtgui_sink_x_0_0, 0))
        self.connect((self.uhd_usrp_source_0_0_1, 0),
                     (self.blocks_delay_0_0_0_0_0_0, 0))
        self.connect((self.uhd_usrp_source_0_0_1, 0),
                     (self.digital_ofdm_sync_sc_cfb_0_0_0_0_0_0, 0))
Example #19
0
    def __init__(self):
        gr.top_block.__init__(self, "OFDM Rx")

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((
            1,
            1,
            1,
            -1,
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -21,
            -7,
            7,
            21,
        ), )
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) +
            range(8, 21) + range(22, 27), )
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.sync_word2 = sync_word2 = [
            0j, 0j, 0j, 0j, 0j, 0j, (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (1 + 0j), (-1 + 0j), 0j, (1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j),
            (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            0j, 0j, 0j, 0j, 0j
        ]
        self.sync_word1 = sync_word1 = [
            0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
            -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            0., 0., 0., 0., 0.
        ]
        self.samp_rate = samp_rate = 1000000
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 1)
        self.packet_len = packet_len = 1000
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols)
        self.band_width = band_width = 20000000

        ##################################################
        # Blocks
        ##################################################
        self.pluto_source_0 = iio.pluto_source('192.168.2.1', 500000000,
                                               samp_rate, band_width, 0x8000,
                                               True, True, True, "slow_attack",
                                               64.0, '', True)
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len / 4, False, 0.9)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, '', True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, '', 0, '', True)
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len / 4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len / 4, length_tag_key, True, 1)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(
            (sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3,
            fft_len,
            fft_len / 4,
            length_tag_key,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            samp_rate,
            (),
            0,
        )
        self.digital_crc32_bb_0 = digital.crc32_bb(True, packet_length_tag_key,
                                                   True)
        self.digital_constellation_decoder_cb_1 = digital.constellation_decoder_cb(
            payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.blocks_udp_sink_0 = blocks.udp_sink(gr.sizeof_char * 1,
                                                 '192.168.2.10', 8088, 1472,
                                                 True)
        self.blocks_tag_debug_1 = blocks.tag_debug(gr.sizeof_char * 1,
                                                   'Rx Bytes', "")
        self.blocks_tag_debug_1.set_display(True)
        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True,
            gr.GR_LSB_FIRST)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                           fft_len + fft_len / 4)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'),
                         (self.digital_header_payload_demux_0, 'header_data'))
        self.connect((self.analog_frequency_modulator_fc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0),
                     (self.digital_crc32_bb_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1, 0),
                     (self.blocks_repack_bits_bb_0, 0))
        self.connect((self.digital_crc32_bb_0, 0),
                     (self.blocks_tag_debug_1, 0))
        self.connect((self.digital_crc32_bb_0, 0), (self.blocks_udp_sink_0, 0))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.fft_vxx_1, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0),
                     (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.digital_constellation_decoder_cb_1, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0),
                     (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1),
                     (self.digital_header_payload_demux_0, 1))
        self.connect((self.fft_vxx_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
        self.connect((self.pluto_source_0, 0), (self.blocks_delay_0, 0))
        self.connect((self.pluto_source_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_0, 0))
Example #20
0
    def __init__(self, samp_rate=10000):
        gr.hier_block2.__init__(
            self, "Sync Radio Hier Grc",
            gr.io_signaturev(2, 2, [gr.sizeof_char*1, gr.sizeof_gr_complex*1]),
            gr.io_signaturev(2, 2, [gr.sizeof_char*1, gr.sizeof_gr_complex*1]),
        )

        ##################################################
        # Parameters
        ##################################################
        self.samp_rate = samp_rate

        ##################################################
        # Variables
        ##################################################
        self.sync_word2 = sync_word2 = [0j,0j,0j,0j,0j,0j,0j,0j,0j,0j,0j,0j,0j,0j,0j,0j,(1+0j),(-1+0j),(-1+0j),(-1+0j),(1+0j),(-1+0j),(1+0j),(-1+0j),(-1+0j),(-1+0j),(-1+0j),(-1+0j),(-1+0j),(-1+0j),(-1+0j),(1+0j),0j,(1+0j),(-1+0j),(1+0j),(1+0j),(1+0j),(-1+0j),(1+0j),(1+0j),(1+0j),(-1+0j),(1+0j),(1+0j),(1+0j),(1+0j),(-1+0j),0j,0j,0j,0j,0j,0j,0j,0j,0j,0j,0j,0j,0j,0j,0j,0j]
        self.sync_word1 = sync_word1 = [0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,1.42,0.0,-1.42,0.0,1.42,0.0,1.42,0.0,1.42,0.0,1.42,0.0,-1.42,0.0,1.42,0.0,1.42,0.0,-1.42,0.0,1.42,0.0,1.42,0.0,1.42,0.0,-1.42,0.0,1.42,0.0,1.42,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0]
        self.pilot_symbols = pilot_symbols = ((1, -1,),)
        self.pilot_carriers = pilot_carriers = ((-13, 12,),)
        self.payload_mod = payload_mod = digital.constellation_qpsk() 
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = ([-16, -15, -14, -12, -11, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15],)
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = (len(sync_word1)+len(sync_word2))/2
        self.rolloff = rolloff = 0
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(fft_len, payload_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols, 1)
        self.len_ocup_carr = len_ocup_carr = len(occupied_carriers[0])
        self.header_formatter = header_formatter = digital.packet_header_ofdm(occupied_carriers, n_syms=1, len_tag_key=packet_length_tag_key, frame_len_tag_key=length_tag_key, bits_per_header_sym=header_mod.bits_per_symbol(), bits_per_payload_sym=payload_mod.bits_per_symbol(), scramble_header=True)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(fft_len, header_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols)
        self.forward_OOB = forward_OOB = [0.005277622700213007, 0.03443705907448985, 0.1214101788557494, 0.29179662246081545, 0.52428014905364, 0.7350677973792328, 0.8210395030022875, 0.7350677973792348, 0.5242801490536404, 0.291796622460816, 0.1214101788557501, 0.03443705907448997, 0.005277622700213012]
        self.feedback_OOB = feedback_OOB = [1.0, -1.0455317889337852, 3.9201525346250072, -3.9114761684448958, 6.54266144224035, -5.737287389902878, 5.820328302284336, -4.134700802700442, 2.7949972248757664, -1.4584448495689168, 0.6358650797085171, -0.19847981428665007, 0.04200458351675313]
        self.cp_len = cp_len = fft_len/4
        self.active_carriers = active_carriers = len(occupied_carriers[0])+4

        ##################################################
        # Blocks
        ##################################################
        self.iir_filter_xxx_1 = filter.iir_filter_ccd((forward_OOB), (feedback_OOB), False)
        self.fft_vxx_txpath = fft.fft_vcc(fft_len, False, (()), True, 1)
        self.fft_vxx_2_rxpath = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_1_rxpath = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_rxpath = digital.packet_headerparser_b(header_formatter.base())
        self.digital_packet_headergenerator_bb_txpath = digital.packet_headergenerator_bb(header_formatter.formatter(), "packet_len")
        self.digital_ofdm_sync_sc_cfb_rxpath = digital.ofdm_sync_sc_cfb(fft_len, fft_len/4, False)
        self.digital_ofdm_serializer_vcc_payload_rxpath = digital.ofdm_serializer_vcc(fft_len, occupied_carriers, length_tag_key, packet_length_tag_key, 1, "", True)
        self.digital_ofdm_serializer_vcc_header_rxpath = digital.ofdm_serializer_vcc(fft_len, occupied_carriers, length_tag_key, "", 0, "", True)
        self.digital_ofdm_frame_equalizer_vcvc_2_rxpath = digital.ofdm_frame_equalizer_vcvc(payload_equalizer.base(), cp_len, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_1_rxpath = digital.ofdm_frame_equalizer_vcvc(header_equalizer.base(), cp_len, length_tag_key, True, 1)
        self.digital_ofdm_cyclic_prefixer_txpath = digital.ofdm_cyclic_prefixer(fft_len, fft_len+cp_len, rolloff, packet_length_tag_key)
        (self.digital_ofdm_cyclic_prefixer_txpath).set_min_output_buffer(24000)
        self.digital_ofdm_chanest_vcvc_rxpath = digital.ofdm_chanest_vcvc((sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_ofdm_carrier_allocator_cvc_txpath = digital.ofdm_carrier_allocator_cvc(fft_len, occupied_carriers, pilot_carriers, pilot_symbols, (sync_word1, sync_word2), packet_length_tag_key)
        (self.digital_ofdm_carrier_allocator_cvc_txpath).set_min_output_buffer(16000)
        self.digital_header_payload_demux_rxpath = digital.header_payload_demux(
        	  3,
        	  fft_len,
        	  cp_len,
        	  length_tag_key,
        	  "",
        	  True,
        	  gr.sizeof_gr_complex,
        	  "rx_time",
                  samp_rate,
                  (),
            )
        #self.digital_crc32_bb_txpath = digital.crc32_bb(False, packet_length_tag_key)
        #self.digital_crc32_bb_rxpath = digital.crc32_bb(True, packet_length_tag_key)
        self.digital_constellation_decoder_cb_1_rxpath = digital.constellation_decoder_cb(payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(header_mod.base())
        self.digital_chunks_to_symbols_x_txpath = digital.chunks_to_symbols_bc((payload_mod.points()), 1)
        self.digital_chunks_to_symbols_txpath = digital.chunks_to_symbols_bc((header_mod.points()), 1)
        self.blocks_tagged_stream_mux_txpath = blocks.tagged_stream_mux(gr.sizeof_gr_complex*1, packet_length_tag_key, 0)
        (self.blocks_tagged_stream_mux_txpath).set_min_output_buffer(16000)
        self.blocks_tag_gate_txpath = blocks.tag_gate(gr.sizeof_gr_complex * 1, False)
        self.blocks_repack_bits_bb_txpath = blocks.repack_bits_bb(8, payload_mod.bits_per_symbol(), packet_length_tag_key, False)
        self.blocks_repack_bits_bb_rxpath = blocks.repack_bits_bb(payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True)
        self.blocks_multiply_xx_rxpath = blocks.multiply_vcc(1)
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vcc((.01, ))
        self.blocks_delay_rxpath = blocks.delay(gr.sizeof_gr_complex*1, fft_len+fft_len/4)
        self.analog_frequency_modulator_fc_rxpath = analog.frequency_modulator_fc(-2.0/fft_len)
        self.analog_agc2_xx_0 = analog.agc2_cc(1e-1, 1e-2, 1.0, 1.0)
        self.analog_agc2_xx_0.set_max_gain(65536)

        ##################################################
        # Connections
        ##################################################
        self.connect((self.digital_ofdm_sync_sc_cfb_rxpath, 0), (self.analog_frequency_modulator_fc_rxpath, 0))
        self.connect((self.analog_agc2_xx_0, 0), (self.digital_ofdm_sync_sc_cfb_rxpath, 0))
        self.connect((self.analog_agc2_xx_0, 0), (self.blocks_delay_rxpath, 0))
        self.connect((self.digital_packet_headergenerator_bb_txpath, 0), (self.digital_chunks_to_symbols_txpath, 0))
        self.connect((self.blocks_repack_bits_bb_txpath, 0), (self.digital_chunks_to_symbols_x_txpath, 0))
        self.connect((self.digital_chunks_to_symbols_txpath, 0), (self.blocks_tagged_stream_mux_txpath, 0))
        self.connect((self.digital_chunks_to_symbols_x_txpath, 0), (self.blocks_tagged_stream_mux_txpath, 1))
        self.connect((self.digital_ofdm_cyclic_prefixer_txpath, 0), (self.blocks_tag_gate_txpath, 0))
        self.connect((self.fft_vxx_txpath, 0), (self.digital_ofdm_cyclic_prefixer_txpath, 0))
        self.connect((self.blocks_tagged_stream_mux_txpath, 0), (self.digital_ofdm_carrier_allocator_cvc_txpath, 0))
        self.connect((self.digital_ofdm_carrier_allocator_cvc_txpath, 0), (self.fft_vxx_txpath, 0))
        self.connect((self.digital_header_payload_demux_rxpath, 0), (self.fft_vxx_1_rxpath, 0))
        self.connect((self.fft_vxx_1_rxpath, 0), (self.digital_ofdm_chanest_vcvc_rxpath, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1_rxpath, 0), (self.digital_ofdm_serializer_vcc_header_rxpath, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_rxpath, 0), (self.digital_ofdm_frame_equalizer_vcvc_1_rxpath, 0))
        self.connect((self.digital_header_payload_demux_rxpath, 1), (self.fft_vxx_2_rxpath, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_2_rxpath, 0), (self.digital_ofdm_serializer_vcc_payload_rxpath, 0))
        self.connect((self.fft_vxx_2_rxpath, 0), (self.digital_ofdm_frame_equalizer_vcvc_2_rxpath, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload_rxpath, 0), (self.digital_constellation_decoder_cb_1_rxpath, 0))
        self.connect((self.digital_constellation_decoder_cb_1_rxpath, 0), (self.blocks_repack_bits_bb_rxpath, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header_rxpath, 0), (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.analog_frequency_modulator_fc_rxpath, 0), (self.blocks_multiply_xx_rxpath, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_rxpath, 1), (self.digital_header_payload_demux_rxpath, 1))
        self.connect((self.blocks_multiply_xx_rxpath, 0), (self.digital_header_payload_demux_rxpath, 0))
        self.connect((self.blocks_delay_rxpath, 0), (self.blocks_multiply_xx_rxpath, 1))
        self.connect((self.digital_constellation_decoder_cb_0, 0), (self.digital_packet_headerparser_b_rxpath, 0))
        self.connect((self, 1), (self.analog_agc2_xx_0, 0))
        self.connect((self.blocks_tag_gate_txpath, 0), (self.blocks_multiply_const_vxx_0, 0))
        self.connect((self.iir_filter_xxx_1, 0), (self, 1))
        '''
        self.connect((self, 0), (self.digital_crc32_bb_txpath, 0))
        self.connect((self.digital_crc32_bb_txpath, 0), (self.blocks_repack_bits_bb_txpath, 0))
        self.connect((self.digital_crc32_bb_txpath, 0), (self.digital_packet_headergenerator_bb_txpath, 0))
        '''
        self.connect((self, 0), (self.blocks_repack_bits_bb_txpath, 0))
        self.connect((self, 0), (self.digital_packet_headergenerator_bb_txpath, 0))

        '''
        self.connect((self.blocks_repack_bits_bb_rxpath, 0), (self.digital_crc32_bb_rxpath, 0))
        self.connect((self.digital_crc32_bb_rxpath, 0), (self, 0))
        '''
        self.connect((self.blocks_repack_bits_bb_rxpath, 0), (self, 0))

        self.connect((self.blocks_multiply_const_vxx_0, 0), (self.iir_filter_xxx_1, 0))

        ##################################################
        # Asynch Message Connections
        ##################################################
        self.msg_connect(self.digital_packet_headerparser_b_rxpath, "header_data", self.digital_header_payload_demux_rxpath, "header_data")
Example #21
0
    def __init__(self):
        gr.top_block.__init__(self, "OFDM Rx")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("OFDM Rx")
        qtgui.util.check_set_qss()
        try:
            self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
        except:
            pass
        self.top_scroll_layout = Qt.QVBoxLayout()
        self.setLayout(self.top_scroll_layout)
        self.top_scroll = Qt.QScrollArea()
        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
        self.top_scroll_layout.addWidget(self.top_scroll)
        self.top_scroll.setWidgetResizable(True)
        self.top_widget = Qt.QWidget()
        self.top_scroll.setWidget(self.top_widget)
        self.top_layout = Qt.QVBoxLayout(self.top_widget)
        self.top_grid_layout = Qt.QGridLayout()
        self.top_layout.addLayout(self.top_grid_layout)

        self.settings = Qt.QSettings("GNU Radio", "rx_ofdm")
        self.restoreGeometry(self.settings.value("geometry").toByteArray())

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((
            1,
            1,
            1,
            -1,
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -21,
            -7,
            7,
            21,
        ), )
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) +
            range(8, 21) + range(22, 27), )
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.tun_gain = tun_gain = 30
        self.sync_word2 = sync_word2 = [
            0j, 0j, 0j, 0j, 0j, 0j, (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (1 + 0j), (-1 + 0j), 0j, (1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j),
            (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            0j, 0j, 0j, 0j, 0j
        ]
        self.sync_word1 = sync_word1 = [
            0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
            -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            0., 0., 0., 0., 0.
        ]
        self.samp_rate = samp_rate = 2000000
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 1)
        self.packet_len = packet_len = 478
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols)

        ##################################################
        # Blocks
        ##################################################
        self._tun_gain_range = Range(0, 50, 2, 30, 200)
        self._tun_gain_win = RangeWidget(self._tun_gain_range,
                                         self.set_tun_gain, "tun_gain",
                                         "counter_slider", float)
        self.top_grid_layout.addWidget(self._tun_gain_win)
        self.uhd_usrp_source_0 = uhd.usrp_source(
            ",".join(("serial=31DD6FA", "")),
            uhd.stream_args(
                cpu_format="fc32",
                channels=range(1),
            ),
        )
        self.uhd_usrp_source_0.set_samp_rate(3e6)
        self.uhd_usrp_source_0.set_center_freq(1e9, 0)
        self.uhd_usrp_source_0.set_gain(tun_gain, 0)
        self.uhd_usrp_source_0.set_antenna('TX/RX', 0)
        self.qtgui_sink_x_0 = qtgui.sink_c(
            1024,  #fftsize
            firdes.WIN_BLACKMAN_hARRIS,  #wintype
            1E9,  #fc
            samp_rate,  #bw
            "",  #name
            True,  #plotfreq
            True,  #plotwaterfall
            True,  #plottime
            True,  #plotconst
        )
        self.qtgui_sink_x_0.set_update_time(1.0 / 10)
        self._qtgui_sink_x_0_win = sip.wrapinstance(
            self.qtgui_sink_x_0.pyqwidget(), Qt.QWidget)
        self.top_grid_layout.addWidget(self._qtgui_sink_x_0_win)

        self.qtgui_sink_x_0.enable_rf_freq(False)

        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len / 4, False, 0.9)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, '', True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, '', 0, '', True)
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len / 4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len / 4, length_tag_key, True, 1)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(
            (sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3,
            fft_len,
            fft_len / 4,
            length_tag_key,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            samp_rate,
            (),
            0,
        )
        self.digital_crc32_bb_0 = digital.crc32_bb(True, packet_length_tag_key,
                                                   True)
        self.digital_constellation_decoder_cb_1 = digital.constellation_decoder_cb(
            payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.blocks_uchar_to_float_0 = blocks.uchar_to_float()
        self.blocks_tag_debug_1 = blocks.tag_debug(gr.sizeof_char * 1,
                                                   'Rx Bytes', "")
        self.blocks_tag_debug_1.set_display(True)
        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True,
            gr.GR_LSB_FIRST)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_file_sink_0 = blocks.file_sink(
            gr.sizeof_float * 1, '/home/csy/worktest/yan/specturm_data0',
            False)
        self.blocks_file_sink_0.set_unbuffered(True)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                           fft_len + fft_len / 4)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'),
                         (self.digital_header_payload_demux_0, 'header_data'))
        self.connect((self.analog_frequency_modulator_fc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0),
                     (self.digital_crc32_bb_0, 0))
        self.connect((self.blocks_uchar_to_float_0, 0),
                     (self.blocks_file_sink_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1, 0),
                     (self.blocks_repack_bits_bb_0, 0))
        self.connect((self.digital_crc32_bb_0, 0),
                     (self.blocks_tag_debug_1, 0))
        self.connect((self.digital_crc32_bb_0, 0),
                     (self.blocks_uchar_to_float_0, 0))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.fft_vxx_1, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0),
                     (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.digital_constellation_decoder_cb_1, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0),
                     (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1),
                     (self.digital_header_payload_demux_0, 1))
        self.connect((self.fft_vxx_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
        self.connect((self.uhd_usrp_source_0, 0), (self.blocks_delay_0, 0))
        self.connect((self.uhd_usrp_source_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_0, 0))
        self.connect((self.uhd_usrp_source_0, 0), (self.qtgui_sink_x_0, 0))
Example #22
0
    def __init__(self, fft_len=_def_fft_len, cp_len=_def_cp_len,
                 frame_length_tag_key=_def_frame_length_tag_key,
                 packet_length_tag_key=_def_packet_length_tag_key,
                 packet_num_tag_key=_def_packet_num_tag_key,
                 occupied_carriers=_def_occupied_carriers,
                 pilot_carriers=_def_pilot_carriers,
                 pilot_symbols=_def_pilot_symbols,
                 bps_header=1,
                 bps_payload=1,
                 sync_word1=None,
                 sync_word2=None,
                 debug_log=False,
                 scramble_bits=False
                 ):
        gr.hier_block2.__init__(self, "ofdm_rx",
                    gr.io_signature(1, 1, gr.sizeof_gr_complex),
                    gr.io_signature(2, 2, gr.sizeof_char))
        ### Param init / sanity check ########################################
        self.fft_len           = fft_len
        self.cp_len            = cp_len
        self.frame_length_tag_key    = frame_length_tag_key
        self.packet_length_tag_key   = packet_length_tag_key
        self.occupied_carriers = occupied_carriers
        self.bps_header        = bps_header
        self.bps_payload       = bps_payload
        n_sync_words = 1
        if sync_word1 is None:
            self.sync_word1 = _make_sync_word1(fft_len, occupied_carriers, pilot_carriers)
        else:
            if len(sync_word1) != self.fft_len:
                raise ValueError("Length of sync sequence(s) must be FFT length.")
            self.sync_word1 = sync_word1
        self.sync_word2 = ()
        if sync_word2 is None:
            self.sync_word2 = _make_sync_word2(fft_len, occupied_carriers, pilot_carriers)
            n_sync_words = 2
        elif len(sync_word2):
            if len(sync_word2) != fft_len:
                raise ValueError("Length of sync sequence(s) must be FFT length.")
            self.sync_word2 = sync_word2
            n_sync_words = 2
        if scramble_bits:
            self.scramble_seed = 0x7f
        else:
            self.scramble_seed = 0x00 # We deactivate the scrambler by init'ing it with zeros
        ### Sync ############################################################
        sync_detect = digital.ofdm_sync_sc_cfb(fft_len, cp_len)
        delay = blocks.delay(gr.sizeof_gr_complex, fft_len+cp_len)
        oscillator = analog.frequency_modulator_fc(-2.0 / fft_len)
        mixer = blocks.multiply_cc()
        hpd = digital.header_payload_demux(
            n_sync_words+1,       # Number of OFDM symbols before payload (sync + 1 sym header)
            fft_len, cp_len,      # FFT length, guard interval
            frame_length_tag_key, # Frame length tag key
            "",                   # We're not using trigger tags
            True                  # One output item is one OFDM symbol (False would output complex scalars)
        )
        self.connect(self, sync_detect)
        self.connect(self, delay, (mixer, 0), (hpd, 0))
        self.connect((sync_detect, 0), oscillator, (mixer, 1))
        self.connect((sync_detect, 1), (hpd, 1))
        if debug_log:
            self.connect((sync_detect, 0), blocks.file_sink(gr.sizeof_float, 'freq-offset.dat'))
            self.connect((sync_detect, 1), blocks.file_sink(gr.sizeof_char, 'sync-detect.dat'))
        ### Header demodulation ##############################################
        header_fft           = fft.fft_vcc(self.fft_len, True, (), True)
        chanest              = digital.ofdm_chanest_vcvc(self.sync_word1, self.sync_word2, 1)
        header_constellation = _get_constellation(bps_header)
        header_equalizer     = digital.ofdm_equalizer_simpledfe(
            fft_len,
            header_constellation.base(),
            occupied_carriers,
            pilot_carriers,
            pilot_symbols,
            symbols_skipped=0,
        )
        header_eq = digital.ofdm_frame_equalizer_vcvc(
                header_equalizer.base(),
                cp_len,
                self.frame_length_tag_key,
                True,
                1 # Header is 1 symbol long
        )
        header_serializer = digital.ofdm_serializer_vcc(
                fft_len, occupied_carriers,
                self.frame_length_tag_key
        )
        header_demod     = digital.constellation_decoder_cb(header_constellation.base())
        header_formatter = digital.packet_header_ofdm(
                occupied_carriers, 1,
                packet_length_tag_key,
                frame_length_tag_key,
                packet_num_tag_key,
                bps_header,
                bps_payload,
                scramble_header=scramble_bits
        )
        header_parser = digital.packet_headerparser_b(header_formatter.formatter())
        self.connect(
                (hpd, 0),
                header_fft,
                chanest,
                header_eq,
                header_serializer,
                header_demod,
                header_parser
        )
        self.msg_connect(header_parser, "header_data", hpd, "header_data")
        if debug_log:
            self.connect((chanest, 1),      blocks.file_sink(gr.sizeof_gr_complex * fft_len, 'channel-estimate.dat'))
            self.connect((chanest, 0),      blocks.file_sink(gr.sizeof_gr_complex * fft_len, 'post-hdr-chanest.dat'))
            self.connect((chanest, 0),      blocks.tag_debug(gr.sizeof_gr_complex * fft_len, 'post-hdr-chanest'))
            self.connect(header_eq,         blocks.file_sink(gr.sizeof_gr_complex * fft_len, 'post-hdr-eq.dat'))
            self.connect(header_serializer, blocks.file_sink(gr.sizeof_gr_complex,           'post-hdr-serializer.dat'))
            self.connect(header_descrambler, blocks.file_sink(1,                             'post-hdr-demod.dat'))
        ### Payload demod ####################################################
        payload_fft = fft.fft_vcc(self.fft_len, True, (), True)
        payload_constellation = _get_constellation(bps_payload)
        payload_equalizer = digital.ofdm_equalizer_simpledfe(
                fft_len,
                payload_constellation.base(),
                occupied_carriers,
                pilot_carriers,
                pilot_symbols,
                symbols_skipped=1, # (that was already in the header)
                alpha=0.1
        )
        payload_eq = digital.ofdm_frame_equalizer_vcvc(
                payload_equalizer.base(),
                cp_len,
                self.frame_length_tag_key
        )
        payload_serializer = digital.ofdm_serializer_vcc(
                fft_len, occupied_carriers,
                self.frame_length_tag_key,
                self.packet_length_tag_key,
                1 # Skip 1 symbol (that was already in the header)
        )
        payload_demod = digital.constellation_decoder_cb(payload_constellation.base())
        self.payload_descrambler = digital.additive_scrambler_bb(
            0x8a,
            self.scramble_seed,
            7,
            0, # Don't reset after fixed length
            bits_per_byte=8, # This is after packing
            reset_tag_key=self.packet_length_tag_key
        )
        payload_pack = blocks.repack_bits_bb(bps_payload, 8, self.packet_length_tag_key, True)
        self.crc = digital.crc32_bb(True, self.packet_length_tag_key)
        self.connect(
                (hpd, 1),
                payload_fft,
                payload_eq,
                payload_serializer,
                payload_demod,
                payload_pack,
                self.payload_descrambler,
                self.crc,
                self
        )
        self.connect((sync_detect, 1), (self, 1))

        # Add snr logger
        #snr = mofdm.ofdm_subchan_snr_vcvf(self.fft_len, self.cp_len, self.frame_length_tag_key,
        #    self.occupied_carriers, pilot_carriers, pilot_symbols, 0, True, debug=False)
        #self.connect(payload_fft, snr, blocks.file_sink(gr.sizeof_float * fft_len, 'perchan-snr.dat'))

        #rx_data = mofdm.ofdm_data_sink(self.packet_length_tag_key)
        #self.connect(self.payload_descrambler, rx_data)

        if debug_log:
            self.connect((hpd, 1),           blocks.tag_debug(gr.sizeof_gr_complex*fft_len, 'post-hpd'))
            self.connect(payload_fft,        blocks.file_sink(gr.sizeof_gr_complex*fft_len, 'post-payload-fft.dat'))
            self.connect(payload_eq,         blocks.file_sink(gr.sizeof_gr_complex*fft_len, 'post-payload-eq.dat'))
            self.connect(payload_serializer, blocks.file_sink(gr.sizeof_gr_complex,         'post-payload-serializer.dat'))
            self.connect(payload_demod,      blocks.file_sink(1,                            'post-payload-demod.dat'))
            self.connect(payload_pack,       blocks.file_sink(1,                            'post-payload-pack.dat'))
            self.connect(crc,                blocks.file_sink(1,                            'post-payload-crc.dat'))
Example #23
0
    def __init__(self):
        gr.top_block.__init__(self, "OFDM Rx")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("OFDM Rx")
        qtgui.util.check_set_qss()
        try:
            self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
        except:
            pass
        self.top_scroll_layout = Qt.QVBoxLayout()
        self.setLayout(self.top_scroll_layout)
        self.top_scroll = Qt.QScrollArea()
        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
        self.top_scroll_layout.addWidget(self.top_scroll)
        self.top_scroll.setWidgetResizable(True)
        self.top_widget = Qt.QWidget()
        self.top_scroll.setWidget(self.top_widget)
        self.top_layout = Qt.QVBoxLayout(self.top_widget)
        self.top_grid_layout = Qt.QGridLayout()
        self.top_layout.addLayout(self.top_grid_layout)

        self.settings = Qt.QSettings("GNU Radio", "rx_ofdm")
        self.restoreGeometry(self.settings.value("geometry").toByteArray())

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((
            1,
            1,
            1,
            -1,
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -21,
            -7,
            7,
            21,
        ), )
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) +
            range(8, 21) + range(22, 27), )
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.sync_word2 = sync_word2 = [
            0j, 0j, 0j, 0j, 0j, 0j, (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (1 + 0j), (-1 + 0j), 0j, (1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j),
            (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            0j, 0j, 0j, 0j, 0j
        ]
        self.sync_word1 = sync_word1 = [
            0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
            -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            0., 0., 0., 0., 0.
        ]
        self.samp_rate = samp_rate = 500000
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 1)
        self.packet_len = packet_len = 96
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols)

        ##################################################
        # Blocks
        ##################################################
        self.uhd_usrp_source_0 = uhd.usrp_source(
            ",".join(("", "")),
            uhd.stream_args(
                cpu_format="fc32",
                channels=range(1),
            ),
        )
        self.uhd_usrp_source_0.set_samp_rate(samp_rate)
        self.uhd_usrp_source_0.set_center_freq(2e9, 0)
        self.uhd_usrp_source_0.set_gain(30, 0)
        self.uhd_usrp_source_0.set_antenna('RX2', 0)
        self.qtgui_time_sink_x_1 = qtgui.time_sink_f(
            20,  #size
            samp_rate,  #samp_rate
            "",  #name
            1  #number of inputs
        )
        self.qtgui_time_sink_x_1.set_update_time(0.10)
        self.qtgui_time_sink_x_1.set_y_axis(-1, 1)

        self.qtgui_time_sink_x_1.set_y_label('Amplitude', "")

        self.qtgui_time_sink_x_1.enable_tags(-1, True)
        self.qtgui_time_sink_x_1.set_trigger_mode(qtgui.TRIG_MODE_FREE,
                                                  qtgui.TRIG_SLOPE_POS, 0.0, 0,
                                                  0, "")
        self.qtgui_time_sink_x_1.enable_autoscale(True)
        self.qtgui_time_sink_x_1.enable_grid(False)
        self.qtgui_time_sink_x_1.enable_axis_labels(True)
        self.qtgui_time_sink_x_1.enable_control_panel(False)

        if not True:
            self.qtgui_time_sink_x_1.disable_legend()

        labels = ['', '', '', '', '', '', '', '', '', '']
        widths = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        colors = [
            "blue", "red", "green", "black", "cyan", "magenta", "yellow",
            "dark red", "dark green", "blue"
        ]
        styles = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        markers = [-1, -1, -1, -1, -1, -1, -1, -1, -1, -1]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]

        for i in xrange(1):
            if len(labels[i]) == 0:
                self.qtgui_time_sink_x_1.set_line_label(
                    i, "Data {0}".format(i))
            else:
                self.qtgui_time_sink_x_1.set_line_label(i, labels[i])
            self.qtgui_time_sink_x_1.set_line_width(i, widths[i])
            self.qtgui_time_sink_x_1.set_line_color(i, colors[i])
            self.qtgui_time_sink_x_1.set_line_style(i, styles[i])
            self.qtgui_time_sink_x_1.set_line_marker(i, markers[i])
            self.qtgui_time_sink_x_1.set_line_alpha(i, alphas[i])

        self._qtgui_time_sink_x_1_win = sip.wrapinstance(
            self.qtgui_time_sink_x_1.pyqwidget(), Qt.QWidget)
        self.top_layout.addWidget(self._qtgui_time_sink_x_1_win)
        self.qtgui_time_sink_x_0_0 = qtgui.time_sink_f(
            200,  #size
            samp_rate,  #samp_rate
            "",  #name
            1  #number of inputs
        )
        self.qtgui_time_sink_x_0_0.set_update_time(0.10)
        self.qtgui_time_sink_x_0_0.set_y_axis(-1, 2)

        self.qtgui_time_sink_x_0_0.set_y_label('Amplitude', "")

        self.qtgui_time_sink_x_0_0.enable_tags(-1, True)
        self.qtgui_time_sink_x_0_0.set_trigger_mode(qtgui.TRIG_MODE_FREE,
                                                    qtgui.TRIG_SLOPE_POS, 0.0,
                                                    0, 0, "")
        self.qtgui_time_sink_x_0_0.enable_autoscale(True)
        self.qtgui_time_sink_x_0_0.enable_grid(False)
        self.qtgui_time_sink_x_0_0.enable_axis_labels(True)
        self.qtgui_time_sink_x_0_0.enable_control_panel(False)

        if not True:
            self.qtgui_time_sink_x_0_0.disable_legend()

        labels = ['', '', '', '', '', '', '', '', '', '']
        widths = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        colors = [
            "blue", "red", "green", "black", "cyan", "magenta", "yellow",
            "dark red", "dark green", "blue"
        ]
        styles = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        markers = [-1, -1, -1, -1, -1, -1, -1, -1, -1, -1]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]

        for i in xrange(1):
            if len(labels[i]) == 0:
                self.qtgui_time_sink_x_0_0.set_line_label(
                    i, "Data {0}".format(i))
            else:
                self.qtgui_time_sink_x_0_0.set_line_label(i, labels[i])
            self.qtgui_time_sink_x_0_0.set_line_width(i, widths[i])
            self.qtgui_time_sink_x_0_0.set_line_color(i, colors[i])
            self.qtgui_time_sink_x_0_0.set_line_style(i, styles[i])
            self.qtgui_time_sink_x_0_0.set_line_marker(i, markers[i])
            self.qtgui_time_sink_x_0_0.set_line_alpha(i, alphas[i])

        self._qtgui_time_sink_x_0_0_win = sip.wrapinstance(
            self.qtgui_time_sink_x_0_0.pyqwidget(), Qt.QWidget)
        self.top_layout.addWidget(self._qtgui_time_sink_x_0_0_win)
        self.meu_qpsk_demod_adapt_cb_0 = meu.qpsk_demod_adapt_cb()
        self.meu_phase_finder_vci_0 = meu.phase_finder_vci(
            fft_len / 4, fft_len)
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len / 4, False)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, '', True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, '', 0, '', True)
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len / 4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len / 4, length_tag_key, True, 1)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(
            (sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3,
            fft_len,
            fft_len / 4,
            length_tag_key,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            samp_rate,
            (),
            0,
        )
        self.digital_crc32_bb_0_0 = digital.crc32_bb(True,
                                                     packet_length_tag_key,
                                                     False)
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.blocks_uchar_to_float_0_0 = blocks.uchar_to_float()
        self.blocks_tag_debug_1 = blocks.tag_debug(gr.sizeof_char * 1,
                                                   'Rx Bytes', "")
        self.blocks_tag_debug_1.set_display(True)
        self.blocks_repack_bits_bb_0_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True,
            gr.GR_LSB_FIRST)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_int_to_float_0 = blocks.int_to_float(1, 1)
        self.blocks_file_sink_0 = blocks.file_sink(
            gr.sizeof_char * 1, '/home/jdmarques/prefix/testeteste.txt', False)
        self.blocks_file_sink_0.set_unbuffered(False)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                           fft_len + fft_len / 4)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)
        self.analog_const_source_x_0 = analog.sig_source_i(
            0, analog.GR_CONST_WAVE, 0, 0, 1)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'),
                         (self.digital_header_payload_demux_0, 'header_data'))
        self.connect((self.analog_const_source_x_0, 0),
                     (self.meu_qpsk_demod_adapt_cb_0, 1))
        self.connect((self.analog_frequency_modulator_fc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_int_to_float_0, 0),
                     (self.qtgui_time_sink_x_1, 0))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_repack_bits_bb_0_0, 0),
                     (self.blocks_uchar_to_float_0_0, 0))
        self.connect((self.blocks_repack_bits_bb_0_0, 0),
                     (self.digital_crc32_bb_0_0, 0))
        self.connect((self.blocks_uchar_to_float_0_0, 0),
                     (self.qtgui_time_sink_x_0_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_crc32_bb_0_0, 0),
                     (self.blocks_file_sink_0, 0))
        self.connect((self.digital_crc32_bb_0_0, 0),
                     (self.blocks_tag_debug_1, 0))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.fft_vxx_1, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.meu_phase_finder_vci_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0),
                     (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.meu_qpsk_demod_adapt_cb_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0),
                     (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1),
                     (self.digital_header_payload_demux_0, 1))
        self.connect((self.fft_vxx_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
        self.connect((self.meu_phase_finder_vci_0, 0),
                     (self.blocks_int_to_float_0, 0))
        self.connect((self.meu_qpsk_demod_adapt_cb_0, 0),
                     (self.blocks_repack_bits_bb_0_0, 0))
        self.connect((self.uhd_usrp_source_0, 0), (self.blocks_delay_0, 0))
        self.connect((self.uhd_usrp_source_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_0, 0))
    def __init__(self,
                 alpha=0.15,
                 antenna="TX/RX",
                 beta=0.3,
                 dump_filename="<<stdout>>",
                 equalization_method="ppt_dd",
                 ff="",
                 filename="",
                 freq=2.412e9,
                 gain=30,
                 nskip=20000000,
                 samp_rate=20e6):
        gr.top_block.__init__(self, "SWiFi RX")

        ##################################################
        # Parameters
        ##################################################
        self.alpha = alpha
        self.antenna = antenna
        self.beta = beta
        self.dump_filename = dump_filename
        self.equalization_method = equalization_method
        self.ff = ff
        self.filename = filename
        self.freq = freq
        self.gain = gain
        self.nskip = nskip
        self.samp_rate = samp_rate

        ##################################################
        # Variables
        ##################################################
        self.header_mod = header_mod = swifi.wifi_constellation_bpsk()
        self.header_formatter_2 = header_formatter_2 = swifi.ofdm_phy_header_parser(
            "frame_len", "phy")

        ##################################################
        # Blocks
        ##################################################
        self.wirlab_CSI_to_File_0 = wirlab.CSI_to_File(
            gr.sizeof_gr_complex * 1, "", "CSI.log", True)
        self.swifi_wifi_conv_decoder_0_0 = swifi.wifi_conv_decoder(24, -1)
        self.swifi_wifi_conv_decoder_0 = swifi.wifi_conv_decoder("phy")
        self.swifi_scrambler_0 = swifi.scrambler(False, "phy")
        self.swifi_sample_marker_0 = swifi.sample_marker(
            gr.sizeof_gr_complex, "phy")
        self.swifi_payload_parser_0 = swifi.payload_parser(
            "phy", dump_filename, "text", ff, True)
        self.swifi_ofdm_frame_sync_0 = swifi.ofdm_frame_sync(
            0.9, 64, 0.4, 0.05, 0.2, "trigger")
        self.swifi_ofdm_equalizer_1 = swifi.ofdm_equalizer(
            "", True, "channel_states",
            digital.constellation_bpsk().base())
        self.swifi_ofdm_equalizer_1.set_equalization_method(
            equalization_method)
        self.swifi_ofdm_equalizer_1.set_alpha(alpha)
        self.swifi_ofdm_equalizer_1.set_beta(beta)
        self.swifi_ofdm_equalizer_1.enable_foc(False)
        self.swifi_ofdm_equalizer_0 = swifi.ofdm_equalizer(
            "phy", False, "channel_states")
        self.swifi_ofdm_equalizer_0.set_equalization_method(
            equalization_method)
        self.swifi_ofdm_equalizer_0.set_alpha(alpha)
        self.swifi_ofdm_equalizer_0.set_beta(beta)
        self.swifi_ofdm_equalizer_0.enable_foc(False)
        self.swifi_ofdm_chan_est_0 = swifi.ofdm_chan_est(
            64,
            ((0, 0j, 0, 0j, 0, 0j, -1, 1j, -1, 1j, -1, 1j, -1, -1j, 1, 1j, 1,
              -1j, -1, 1j, 1, 1j, 1, 1j, 1, 1j, -1,
              (-0 - 1j), 1, -1j, -1, 1j, 0, -1j, 1,
              (-0 - 1j), 1, -1j, 1, 1j, -1, -1j, 1, (-0 - 1j), -1, 1j, 1, 1j,
              1, 1j, 1, 1j, -1, -1j, 1, 1j, 1, -1j, -1, 0j, 0, 0j, 0, 0j),
             (0, 0, 0, 0, 0, 0, 1, 1, -1, -1, 1, 1, -1, 1, -1, 1, 1, 1, 1, 1,
              1, -1, -1, 1, 1, -1, 1, -1, 1, 1, 1, 1, 0, 1, -1, -1, 1, 1, -1,
              1, -1, 1, -1, -1, -1, -1, -1, 1, 1, -1, -1, 1, -1, 1, -1, 1, 1,
              1, 1, 0, 0, 0, 0, 0)), 0.5, "channel_states", "frame_len", 3,
            False)
        self.swifi_ofdm_chan_est_0.set_estimation_method(0)
        self.swifi_interleaver_0_0 = swifi.interleaver(False, 11)
        self.swifi_interleaver_0 = swifi.interleaver(False, "phy")
        self.swifi_header_payload_demux_0 = swifi.header_payload_demux(
            3, 64, 16, "frame_len", "trigger", True, gr.sizeof_gr_complex,
            "phy")
        self.swifi_constellation_decoder_0 = swifi.constellation_decoder("phy")
        self.swifi_bit_unpacker_0 = swifi.bit_unpacker("phy", 1)
        self.swifi_bit_inserter_0 = swifi.bit_inserter("phy")
        self.limesdr_source_0 = limesdr.source("", 0, "")
        self.limesdr_source_0.set_sample_rate(10e6)
        self.limesdr_source_0.set_center_freq(2.472e9, 0)
        self.limesdr_source_0.set_bandwidth(20e6, 0)
        self.limesdr_source_0.set_gain(50, 0)
        self.limesdr_source_0.set_antenna(1, 0)
        self.limesdr_source_0.calibrate(5e6, 0)

        self.fft_vxx_0_0 = fft.fft_vcc(64, True, (window.rectangular(64)),
                                       True, 1)
        self.fft_vxx_0 = fft.fft_vcc(64, True, (window.rectangular(64)), True,
                                     1)
        self.digital_packet_headerparser_b_0_0 = digital.packet_headerparser_b(
            header_formatter_2.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.blocks_vector_to_stream_1_0_0_0 = blocks.vector_to_stream(
            gr.sizeof_gr_complex * 1, 48)
        self.blocks_vector_to_stream_1_0 = blocks.vector_to_stream(
            gr.sizeof_gr_complex * 1, 48)
        self.blocks_unpacked_to_packed_xx_0_0 = blocks.unpacked_to_packed_bb(
            1, gr.GR_LSB_FIRST)
        self.blocks_unpacked_to_packed_xx_0 = blocks.unpacked_to_packed_bb(
            1, gr.GR_LSB_FIRST)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect(
            (self.digital_packet_headerparser_b_0_0, 'header_data'),
            (self.swifi_header_payload_demux_0, 'header_data'))
        self.connect((self.blocks_unpacked_to_packed_xx_0, 0),
                     (self.swifi_payload_parser_0, 0))
        self.connect((self.blocks_unpacked_to_packed_xx_0_0, 0),
                     (self.digital_packet_headerparser_b_0_0, 0))
        self.connect((self.blocks_vector_to_stream_1_0, 0),
                     (self.swifi_sample_marker_0, 0))
        self.connect((self.blocks_vector_to_stream_1_0_0_0, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.blocks_vector_to_stream_1_0_0_0, 0),
                     (self.wirlab_CSI_to_File_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.swifi_interleaver_0_0, 0))
        self.connect((self.fft_vxx_0, 0), (self.swifi_ofdm_chan_est_0, 0))
        self.connect((self.fft_vxx_0_0, 0), (self.swifi_ofdm_equalizer_0, 0))
        self.connect((self.limesdr_source_0, 0),
                     (self.swifi_ofdm_frame_sync_0, 0))
        self.connect((self.swifi_bit_inserter_0, 0),
                     (self.swifi_wifi_conv_decoder_0, 0))
        self.connect((self.swifi_bit_unpacker_0, 0),
                     (self.swifi_interleaver_0, 0))
        self.connect((self.swifi_constellation_decoder_0, 0),
                     (self.swifi_bit_unpacker_0, 0))
        self.connect((self.swifi_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.swifi_header_payload_demux_0, 1),
                     (self.fft_vxx_0_0, 0))
        self.connect((self.swifi_interleaver_0, 0),
                     (self.swifi_bit_inserter_0, 0))
        self.connect((self.swifi_interleaver_0_0, 0),
                     (self.swifi_wifi_conv_decoder_0_0, 0))
        self.connect((self.swifi_ofdm_chan_est_0, 0),
                     (self.swifi_ofdm_equalizer_1, 0))
        self.connect((self.swifi_ofdm_equalizer_0, 0),
                     (self.blocks_vector_to_stream_1_0, 0))
        self.connect((self.swifi_ofdm_equalizer_1, 0),
                     (self.blocks_vector_to_stream_1_0_0_0, 0))
        self.connect((self.swifi_ofdm_frame_sync_0, 0),
                     (self.swifi_header_payload_demux_0, 0))
        self.connect((self.swifi_sample_marker_0, 0),
                     (self.swifi_constellation_decoder_0, 0))
        self.connect((self.swifi_scrambler_0, 0),
                     (self.blocks_unpacked_to_packed_xx_0, 0))
        self.connect((self.swifi_wifi_conv_decoder_0, 0),
                     (self.swifi_scrambler_0, 0))
        self.connect((self.swifi_wifi_conv_decoder_0_0, 0),
                     (self.blocks_unpacked_to_packed_xx_0_0, 0))
Example #25
0
    def __init__(self,
                 pilot_symbols=((
                     1,
                     1,
                     1,
                     -1,
                 ), ),
                 header_mod=digital.constellation_bpsk(),
                 payload_mod=digital.constellation_qpsk(),
                 sync_word2=[
                     0, 0, 0, 0, 0, 0, -1, -1, -1, -1, 1, 1, -1, -1, -1, 1, -1,
                     1, 1, 1, 1, 1, -1, -1, -1, -1, -1, 1, -1, -1, 1, -1, 0, 1,
                     -1, 1, 1, 1, -1, 1, 1, 1, -1, 1, 1, 1, 1, -1, 1, -1, -1,
                     -1, 1, -1, 1, -1, -1, -1, -1, 0, 0, 0, 0, 0
                 ],
                 sync_word1=[
                     0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356,
                     0., 1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
                     -1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
                     1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
                     -1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
                     -1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
                     1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
                     1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
                     1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 0., 0.,
                     0., 0., 0.
                 ],
                 fft_len=64,
                 packet_len=1,
                 occupied_carriers=(range(-26, -21) + range(-20, -7) +
                                    range(-6, 0) + range(1, 7) + range(8, 21) +
                                    range(22, 27), ),
                 pilot_carriers=((
                     -21,
                     -7,
                     7,
                     21,
                 ), ),
                 samp_rate=500000):
        gr.hier_block2.__init__(
            self,
            "IA RX Phase 1",
            gr.io_signature(1, 1, gr.sizeof_gr_complex * 1),
            gr.io_signaturev(3, 3, [
                gr.sizeof_gr_complex * fft_len, gr.sizeof_gr_complex * fft_len,
                gr.sizeof_char * 1
            ]),
        )

        ##################################################
        # Parameters
        ##################################################
        self.pilot_symbols = pilot_symbols
        self.header_mod = header_mod
        self.payload_mod = payload_mod
        self.sync_word2 = sync_word2
        self.sync_word1 = sync_word1
        self.fft_len = fft_len
        self.packet_len = packet_len
        self.occupied_carriers = occupied_carriers
        self.pilot_carriers = pilot_carriers
        self.samp_rate = samp_rate

        ##################################################
        # Variables
        ##################################################
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.length_tag_key = length_tag_key = "frame_len"
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 0, 1)
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 0, 1)

        ##################################################
        # Blocks
        ##################################################
        self.projectGT_ofdm_chanest1_vcvc_0 = projectGT.ofdm_chanest1_vcvc(
            (sync_word1, sync_word2, sync_word2, sync_word2, sync_word2,
             sync_word2), 1, fft_len, 0, 3, False)
        self.projectGT_crc32_1_bb_0 = projectGT.crc32_1_bb(True, "packet_len")
        self.projectGT_chnl_id_bvc_0 = projectGT.chnl_id_bvc(
            fft_len, "packet_len")
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len / 4, False)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, "", True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, "", 0, "", True)
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len / 4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len / 4, length_tag_key, True, 1)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            7,
            fft_len,
            fft_len / 4,
            length_tag_key,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            samp_rate,
            (),
        )
        self.digital_constellation_decoder_cb_1 = digital.constellation_decoder_cb(
            payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.blocks_tag_debug_0 = blocks.tag_debug(gr.sizeof_char * 1, "RX",
                                                   "")
        self.blocks_tag_debug_0.set_display(False)
        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True)
        self.blocks_null_sink_0 = blocks.null_sink(gr.sizeof_gr_complex *
                                                   fft_len)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                           fft_len + fft_len / 4)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect(self.digital_packet_headerparser_b_0, "header_data",
                         self.digital_header_payload_demux_0, "header_data")
        self.connect((self.analog_frequency_modulator_fc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0),
                     (self.blocks_tag_debug_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0),
                     (self.projectGT_chnl_id_bvc_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0),
                     (self.projectGT_crc32_1_bb_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1, 0),
                     (self.blocks_repack_bits_bb_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0),
                     (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0),
                     (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1),
                     (self.digital_header_payload_demux_0, 1))
        self.connect((self.fft_vxx_0, 0),
                     (self.projectGT_ofdm_chanest1_vcvc_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
        self.connect((self, 0), (self.blocks_delay_0, 0))
        self.connect((self, 0), (self.digital_ofdm_sync_sc_cfb_0, 0))
        self.connect((self.projectGT_chnl_id_bvc_0, 1), (self, 0))
        self.connect((self.projectGT_chnl_id_bvc_0, 0), (self, 1))
        self.connect((self.projectGT_crc32_1_bb_0, 0), (self, 2))
        self.connect((self.projectGT_ofdm_chanest1_vcvc_0, 1),
                     (self.blocks_null_sink_0, 0))
        self.connect((self.projectGT_ofdm_chanest1_vcvc_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.digital_constellation_decoder_cb_1, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.fft_vxx_1, 0))
Example #26
0
    def __init__(self,
                 input_port_num="55555",
                 output_port_num="55556",
                 rx_bw=1e6,
                 rx_freq=2.2e9,
                 rx_gain=0.8,
                 serial_num="31C9237",
                 tx_bw=1e6,
                 tx_freq=2.2e9,
                 tx_gain=0.8):
        gr.top_block.__init__(self, "tranceiver_ofdm_usrp_RS")

        ##################################################
        # Parameters
        ##################################################
        self.input_port_num = input_port_num
        self.output_port_num = output_port_num
        self.rx_bw = rx_bw
        self.rx_freq = rx_freq
        self.rx_gain = rx_gain
        self.serial_num = serial_num
        self.tx_bw = tx_bw
        self.tx_freq = tx_freq
        self.tx_gain = tx_gain

        ##################################################
        # Variables
        ##################################################
        self.packet_len = packet_len = 200
        self.pilot_symbols = pilot_symbols = ((
            1,
            1,
            1,
            -1,
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -21,
            -7,
            7,
            21,
        ), )
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            list(range(-26, -21)) + list(range(-20, -7)) + list(range(-6, 0)) +
            list(range(1, 7)) + list(range(8, 21)) + list(range(22, 27)), )
        self.n = n = 255
        self.length_tag_key = length_tag_key = "frame_len"
        self.k = k = packet_len + 4
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.blocks_RS = blocks_RS = 1
        self.t = t = int((n * blocks_RS - k) / 2)
        self.sync_word2 = sync_word2 = [
            0j, 0j, 0j, 0j, 0j, 0j, (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (1 + 0j), (-1 + 0j), 0j, (1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j),
            (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            0j, 0j, 0j, 0j, 0j
        ]
        self.sync_word1 = sync_word1 = [
            0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
            -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            0., 0., 0., 0., 0.
        ]
        self.samp_rate = samp_rate = 10000
        self.rolloff = rolloff = 0
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 1)
        self.out_buf_size = out_buf_size = 0
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols)
        self.hdr_format = hdr_format = digital.header_format_ofdm(
            occupied_carriers,
            1,
            length_tag_key,
        )

        ##################################################
        # Blocks
        ##################################################
        self.zeromq_sub_source_0 = zeromq.sub_source(
            gr.sizeof_char, 1, "tcp://127.0.0.1:" + input_port_num, 100, False,
            -1)
        self.zeromq_pub_sink_0 = zeromq.pub_sink(gr.sizeof_char, 1,
                                                 "tcp://127.0.0.1:55556", 100,
                                                 False, -1)
        self.uhd_usrp_source_0 = uhd.usrp_source(
            ",".join(("", "")),
            uhd.stream_args(
                cpu_format="fc32",
                args='',
                channels=list(range(0, 1)),
            ),
        )
        self.uhd_usrp_source_0.set_center_freq(rx_freq, 0)
        self.uhd_usrp_source_0.set_normalized_gain(rx_gain, 0)
        self.uhd_usrp_source_0.set_antenna('RX2', 0)
        self.uhd_usrp_source_0.set_samp_rate(rx_bw)
        self.uhd_usrp_source_0.set_time_now(uhd.time_spec(time.time()),
                                            uhd.ALL_MBOARDS)
        self.uhd_usrp_sink_0 = uhd.usrp_sink(
            ",".join(("", "")),
            uhd.stream_args(
                cpu_format="fc32",
                args='',
                channels=list(range(0, 1)),
            ),
            packet_length_tag_key,
        )
        self.uhd_usrp_sink_0.set_center_freq(tx_freq, 0)
        self.uhd_usrp_sink_0.set_normalized_gain(tx_gain, 0)
        self.uhd_usrp_sink_0.set_antenna('TX/RX', 0)
        self.uhd_usrp_sink_0.set_samp_rate(tx_bw)
        self.uhd_usrp_sink_0.set_time_now(uhd.time_spec(time.time()),
                                          uhd.ALL_MBOARDS)
        self.foo_packet_pad2_0 = foo.packet_pad2(False, False, 0.001, 100,
                                                 1000)
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0_0 = fft.fft_vcc(fft_len, False, (), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.dtv_dvbt_reed_solomon_enc_0 = dtv.dvbt_reed_solomon_enc(
            2, 8, 0x11d, n, k, t, 0, blocks_RS)
        self.dtv_dvbt_reed_solomon_dec_0 = dtv.dvbt_reed_solomon_dec(
            2, 8, 0x11d, n, k, t, 0, 1)
        self.digital_protocol_formatter_bb_0 = digital.protocol_formatter_bb(
            hdr_format, packet_length_tag_key)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len // 4, False, 0.9)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, '', True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, '', 0, '', True)
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len // 4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len // 4, length_tag_key, True, 1)
        self.digital_ofdm_cyclic_prefixer_0 = digital.ofdm_cyclic_prefixer(
            fft_len, fft_len + fft_len // 4, rolloff, packet_length_tag_key)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(
            sync_word1, sync_word2, 1, 0, 3, False)
        self.digital_ofdm_carrier_allocator_cvc_0 = digital.ofdm_carrier_allocator_cvc(
            fft_len, occupied_carriers, pilot_carriers, pilot_symbols,
            (sync_word1, sync_word2), packet_length_tag_key, True)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3, fft_len, fft_len // 4, length_tag_key, "", True,
            gr.sizeof_gr_complex, "rx_time", samp_rate, (), 0)
        self.digital_crc32_bb_0_0 = digital.crc32_bb(False,
                                                     packet_length_tag_key,
                                                     True)
        self.digital_crc32_bb_0 = digital.crc32_bb(True, packet_length_tag_key,
                                                   True)
        self.digital_constellation_decoder_cb_1 = digital.constellation_decoder_cb(
            payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.digital_chunks_to_symbols_xx_0_0 = digital.chunks_to_symbols_bc(
            payload_mod.points(), 1)
        self.digital_chunks_to_symbols_xx_0 = digital.chunks_to_symbols_bc(
            header_mod.points(), 1)
        self.blocks_vector_to_stream_0_0 = blocks.vector_to_stream(
            gr.sizeof_char * 1, k)
        self.blocks_vector_to_stream_0 = blocks.vector_to_stream(
            gr.sizeof_char * 1, n)
        self.blocks_tagged_stream_mux_0 = blocks.tagged_stream_mux(
            gr.sizeof_gr_complex * 1, packet_length_tag_key, 0)
        self.blocks_tagged_stream_multiply_length_0_0 = blocks.tagged_stream_multiply_length(
            gr.sizeof_char * 1, packet_length_tag_key, k / n)
        self.blocks_tagged_stream_multiply_length_0 = blocks.tagged_stream_multiply_length(
            gr.sizeof_char * 1, packet_length_tag_key, n / k)
        self.blocks_stream_to_vector_1 = blocks.stream_to_vector(
            gr.sizeof_char * 1, k)
        self.blocks_stream_to_vector_0 = blocks.stream_to_vector(
            gr.sizeof_char * 1, n)
        self.blocks_stream_to_tagged_stream_0_0_0 = blocks.stream_to_tagged_stream(
            gr.sizeof_char, 1, k, packet_length_tag_key)
        self.blocks_stream_to_tagged_stream_0 = blocks.stream_to_tagged_stream(
            gr.sizeof_char, 1, packet_len, packet_length_tag_key)
        self.blocks_repack_bits_bb_0_1 = blocks.repack_bits_bb(
            8, payload_mod.bits_per_symbol(), packet_length_tag_key, False,
            gr.GR_LSB_FIRST)
        self.blocks_repack_bits_bb_0_0 = blocks.repack_bits_bb(
            8, 1, packet_length_tag_key, False, gr.GR_LSB_FIRST)
        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True,
            gr.GR_LSB_FIRST)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_cc(0.05)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                           fft_len + fft_len // 4)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'),
                         (self.digital_header_payload_demux_0, 'header_data'))
        self.connect((self.analog_frequency_modulator_fc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_multiply_const_vxx_0, 0),
                     (self.foo_packet_pad2_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0),
                     (self.blocks_stream_to_vector_0, 0))
        self.connect((self.blocks_repack_bits_bb_0_0, 0),
                     (self.digital_chunks_to_symbols_xx_0, 0))
        self.connect((self.blocks_repack_bits_bb_0_1, 0),
                     (self.digital_chunks_to_symbols_xx_0_0, 0))
        self.connect((self.blocks_stream_to_tagged_stream_0, 0),
                     (self.digital_crc32_bb_0_0, 0))
        self.connect((self.blocks_stream_to_tagged_stream_0_0_0, 0),
                     (self.blocks_tagged_stream_multiply_length_0_0, 0))
        self.connect((self.blocks_stream_to_vector_0, 0),
                     (self.dtv_dvbt_reed_solomon_dec_0, 0))
        self.connect((self.blocks_stream_to_vector_1, 0),
                     (self.dtv_dvbt_reed_solomon_enc_0, 0))
        self.connect((self.blocks_tagged_stream_multiply_length_0, 0),
                     (self.blocks_repack_bits_bb_0_1, 0))
        self.connect((self.blocks_tagged_stream_multiply_length_0, 0),
                     (self.digital_protocol_formatter_bb_0, 0))
        self.connect((self.blocks_tagged_stream_multiply_length_0_0, 0),
                     (self.digital_crc32_bb_0, 0))
        self.connect((self.blocks_tagged_stream_mux_0, 0),
                     (self.digital_ofdm_carrier_allocator_cvc_0, 0))
        self.connect((self.blocks_vector_to_stream_0, 0),
                     (self.blocks_tagged_stream_multiply_length_0, 0))
        self.connect((self.blocks_vector_to_stream_0_0, 0),
                     (self.blocks_stream_to_tagged_stream_0_0_0, 0))
        self.connect((self.digital_chunks_to_symbols_xx_0, 0),
                     (self.blocks_tagged_stream_mux_0, 0))
        self.connect((self.digital_chunks_to_symbols_xx_0_0, 0),
                     (self.blocks_tagged_stream_mux_0, 1))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1, 0),
                     (self.blocks_repack_bits_bb_0, 0))
        self.connect((self.digital_crc32_bb_0, 0), (self.zeromq_pub_sink_0, 0))
        self.connect((self.digital_crc32_bb_0_0, 0),
                     (self.blocks_stream_to_vector_1, 0))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.fft_vxx_1, 0))
        self.connect((self.digital_ofdm_carrier_allocator_cvc_0, 0),
                     (self.fft_vxx_0_0, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_cyclic_prefixer_0, 0),
                     (self.blocks_multiply_const_vxx_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0),
                     (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.digital_constellation_decoder_cb_1, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0),
                     (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1),
                     (self.digital_header_payload_demux_0, 1))
        self.connect((self.digital_protocol_formatter_bb_0, 0),
                     (self.blocks_repack_bits_bb_0_0, 0))
        self.connect((self.dtv_dvbt_reed_solomon_dec_0, 0),
                     (self.blocks_vector_to_stream_0_0, 0))
        self.connect((self.dtv_dvbt_reed_solomon_enc_0, 0),
                     (self.blocks_vector_to_stream_0, 0))
        self.connect((self.fft_vxx_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_0_0, 0),
                     (self.digital_ofdm_cyclic_prefixer_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
        self.connect((self.foo_packet_pad2_0, 0), (self.uhd_usrp_sink_0, 0))
        self.connect((self.uhd_usrp_source_0, 0), (self.blocks_delay_0, 0))
        self.connect((self.uhd_usrp_source_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_0, 0))
        self.connect((self.zeromq_sub_source_0, 0),
                     (self.blocks_stream_to_tagged_stream_0, 0))
Example #27
0
    def __init__(
        self,
        pilot_carriers=((-40, -14, 13, 39),),
        pilot_symbols=((1, 1, 1, -1),),
        occupied_carriers=(
            [
                -54,
                -53,
                -52,
                -51,
                -50,
                -49,
                -48,
                -47,
                -46,
                -45,
                -44,
                -43,
                -42,
                -41,
                -39,
                -38,
                -37,
                -36,
                -35,
                -34,
                -33,
                -32,
                -31,
                -30,
                -29,
                -28,
                -27,
                -26,
                -25,
                -24,
                -23,
                -22,
                -21,
                -20,
                -19,
                -18,
                -17,
                -16,
                -15,
                -13,
                -12,
                -11,
                -10,
                -9,
                -8,
                -7,
                -6,
                -5,
                -4,
                -3,
                -2,
                -1,
                1,
                2,
                3,
                4,
                5,
                6,
                7,
                8,
                9,
                10,
                11,
                12,
                14,
                15,
                16,
                17,
                18,
                19,
                20,
                21,
                22,
                23,
                24,
                25,
                26,
                27,
                28,
                29,
                30,
                31,
                32,
                33,
                34,
                35,
                36,
                37,
                38,
                40,
                41,
                42,
                43,
                44,
                45,
                46,
                47,
                48,
                49,
                50,
                51,
                52,
                53,
            ],
        ),
        samp_rate=10000,
        payload_mod="qpsk",
        sync_word1=[
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
            -1.42,
            0.0,
            -1.42,
            0.0,
            -1.42,
            0.0,
            1.42,
            0.0,
            1.42,
            0.0,
            -1.42,
            0.0,
            -1.42,
            0.0,
            -1.42,
            0.0,
            1.42,
            0.0,
            -1.42,
            0.0,
            1.42,
            0.0,
            1.42,
            0.0,
            1.42,
            0.0,
            1.42,
            0.0,
            1.42,
            0.0,
            -1.42,
            0.0,
            -1.42,
            0.0,
            -1.42,
            0.0,
            -1.42,
            0.0,
            -1.42,
            0.0,
            1.42,
            0.0,
            -1.42,
            0.0,
            -1.42,
            0.0,
            1.42,
            0.0,
            -1.42,
            0.0,
            1.42,
            0.0,
            -1.42,
            0.0,
            1.42,
            0.0,
            -1.42,
            0.0,
            1.42,
            0.0,
            1.42,
            0.0,
            1.42,
            0.0,
            -1.42,
            0.0,
            1.42,
            0.0,
            1.42,
            0.0,
            1.42,
            0.0,
            -1.42,
            0.0,
            1.42,
            0.0,
            1.42,
            0.0,
            1.42,
            0.0,
            1.42,
            0.0,
            -1.42,
            0.0,
            1.42,
            0.0,
            -1.42,
            0.0,
            -1.42,
            0.0,
            -1.42,
            0.0,
            1.42,
            0.0,
            -1.42,
            0.0,
            1.42,
            0.0,
            -1.42,
            0.0,
            -1.42,
            0.0,
            -1.42,
            0.0,
            -1.42,
            0.0,
            -1.42,
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
            0.0,
        ],
        sync_word2=[
            0j,
            0j,
            0j,
            0j,
            0j,
            0j,
            0j,
            0j,
            0j,
            0j,
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            0j,
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            (-1 + 0j),
            (1 + 0j),
            0j,
            0j,
            0j,
            0j,
            0j,
            0j,
            0j,
            0j,
            0j,
            0j,
        ],
        scramble_mode=0,
        crc_mode=0,
        clipper_mode=0,
        filter_mode=1,
        clipping_factor=10,
    ):
        gr.hier_block2.__init__(
            self,
            "Ofdm Radio Hier",
            gr.io_signaturev(2, 2, [gr.sizeof_char * 1, gr.sizeof_gr_complex * 1]),
            gr.io_signaturev(2, 2, [gr.sizeof_char * 1, gr.sizeof_gr_complex * 1]),
        )

        ##################################################
        # Parameters
        ##################################################
        self.pilot_carriers = pilot_carriers
        self.pilot_symbols = pilot_symbols
        self.occupied_carriers = occupied_carriers
        self.samp_rate = samp_rate
        self.sync_word1 = sync_word1
        self.sync_word2 = sync_word2
        self.scramble_mode = scramble_mode
        self.crc_mode = crc_mode
        self.clipping_factor = clipping_factor
        self.clipper_mode = clipper_mode
        self.filter_mode = filter_mode

        if payload_mod == "qpsk":
            self.payload_mod = payload_mod = digital.constellation_qpsk()
        elif payload_mod == "qam16":
            self.payload_mod = payload_mod = digital.qam.qam_constellation(16, True, "none", False)
        elif payload_mod == "bpsk":
            self.payload_mod = payload_mod = digital.constellation_bpsk()

        ##################################################
        # Variables
        ##################################################
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = (len(sync_word1) + len(sync_word2)) / 2
        self.scramble_seed = scramble_seed = 0x7F
        self.rolloff = rolloff = 0
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols, 1
        )
        self.len_ocup_carr = len_ocup_carr = len(occupied_carriers[0])
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=True,
        )
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols
        )
        self.forward_OOB = forward_OOB = [
            0.40789374966665903,
            3.2351160543115207,
            11.253435139165413,
            22.423991613997735,
            27.99555756436666,
            22.423991613997735,
            11.253435139165425,
            3.235116054311531,
            0.40789374966666014,
        ]
        self.feedback_OOB = feedback_OOB = [
            1.0,
            6.170110168740749,
            16.888669609673336,
            26.73762881119027,
            26.75444043101795,
            17.322358010203928,
            7.091659316015212,
            1.682084643429639,
            0.17795354282083842,
        ]
        self.cp_len_0 = cp_len_0 = fft_len / 4
        self.cp_len = cp_len = fft_len / 4
        self.active_carriers = active_carriers = len(occupied_carriers[0]) + 4

        ##################################################
        # Blocks
        ##################################################
        self.ofdm_tools_clipper_0 = ofdm_tools.clipper_cc(clipping_factor)
        self.iir_filter_xxx_1 = filter.iir_filter_ccd((forward_OOB), (feedback_OOB), False)
        self.fft_vxx_txpath = fft.fft_vcc(fft_len, False, (()), True, 1)
        self.fft_vxx_2_rxpath = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_1_rxpath = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_rxpath = digital.packet_headerparser_b(header_formatter.base())
        self.digital_packet_headergenerator_bb_txpath = digital.packet_headergenerator_bb(
            header_formatter.formatter(), "packet_len"
        )
        self.digital_ofdm_sync_sc_cfb_rxpath = digital.ofdm_sync_sc_cfb(fft_len, fft_len / 4, False)
        self.digital_ofdm_serializer_vcc_payload_rxpath = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key, 1, "", True
        )
        self.digital_ofdm_serializer_vcc_header_rxpath = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, "", 0, "", True
        )
        self.digital_ofdm_frame_equalizer_vcvc_2_rxpath = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), cp_len, length_tag_key, True, 0
        )
        self.digital_ofdm_frame_equalizer_vcvc_1_rxpath = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), cp_len, length_tag_key, True, 1
        )
        self.digital_ofdm_cyclic_prefixer_txpath = digital.ofdm_cyclic_prefixer(
            fft_len, fft_len + cp_len, rolloff, packet_length_tag_key
        )
        (self.digital_ofdm_cyclic_prefixer_txpath).set_min_output_buffer(24000)
        self.digital_ofdm_chanest_vcvc_rxpath = digital.ofdm_chanest_vcvc((sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_ofdm_carrier_allocator_cvc_txpath = digital.ofdm_carrier_allocator_cvc(
            fft_len, occupied_carriers, pilot_carriers, pilot_symbols, (sync_word1, sync_word2), packet_length_tag_key
        )
        (self.digital_ofdm_carrier_allocator_cvc_txpath).set_min_output_buffer(16000)
        self.digital_header_payload_demux_rxpath = digital.header_payload_demux(
            3, fft_len, cp_len, length_tag_key, "", True, gr.sizeof_gr_complex, "rx_time", samp_rate, ()
        )
        self.digital_crc32_bb_txpath = digital.crc32_bb(False, packet_length_tag_key)
        self.digital_crc32_bb_rxpath = digital.crc32_bb(True, packet_length_tag_key)
        self.digital_constellation_decoder_cb_1_rxpath = digital.constellation_decoder_cb(payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(header_mod.base())
        self.digital_chunks_to_symbols_x_txpath = digital.chunks_to_symbols_bc((payload_mod.points()), 1)
        self.digital_chunks_to_symbols_txpath = digital.chunks_to_symbols_bc((header_mod.points()), 1)
        self.digital_additive_scrambler_bb_txpath_0 = digital.additive_scrambler_bb(
            0x8A, 0x7F, 7, 0, bits_per_byte=8, reset_tag_key=self.packet_length_tag_key
        )
        self.digital_additive_scrambler_bb_rxpath_0 = digital.additive_scrambler_bb(
            0x8A, 0x7F, 7, 0, bits_per_byte=8, reset_tag_key=self.packet_length_tag_key
        )
        self.blocks_tagged_stream_mux_txpath = blocks.tagged_stream_mux(
            gr.sizeof_gr_complex * 1, packet_length_tag_key, 0
        )
        (self.blocks_tagged_stream_mux_txpath).set_min_output_buffer(16000)
        self.blocks_tag_gate_txpath = blocks.tag_gate(gr.sizeof_gr_complex * 1, False)
        self.blocks_repack_bits_bb_txpath = blocks.repack_bits_bb(
            8, payload_mod.bits_per_symbol(), packet_length_tag_key, False
        )
        self.blocks_repack_bits_bb_rxpath = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True
        )
        self.blocks_multiply_xx_rxpath = blocks.multiply_vcc(1)
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vcc((0.01,))
        self.blocks_delay_rxpath = blocks.delay(gr.sizeof_gr_complex * 1, fft_len + fft_len / 4)
        self.blks2_selector_0_2 = grc_blks2.selector(
            item_size=gr.sizeof_gr_complex * 1, num_inputs=2, num_outputs=1, input_index=clipper_mode, output_index=0
        )
        self.blks2_selector_0_1 = grc_blks2.selector(
            item_size=gr.sizeof_char * 1, num_inputs=2, num_outputs=1, input_index=scramble_mode, output_index=0
        )
        self.blks2_selector_0_0_0 = grc_blks2.selector(
            item_size=gr.sizeof_char * 1, num_inputs=2, num_outputs=1, input_index=scramble_mode, output_index=0
        )
        self.blks2_selector_0_0 = grc_blks2.selector(
            item_size=gr.sizeof_char * 1, num_inputs=2, num_outputs=1, input_index=crc_mode, output_index=0
        )
        self.blks2_selector_0 = grc_blks2.selector(
            item_size=gr.sizeof_char * 1, num_inputs=2, num_outputs=1, input_index=crc_mode, output_index=0
        )
        self.blks2_selector_0_2_0 = grc_blks2.selector(
            item_size=gr.sizeof_gr_complex * 1, num_inputs=2, num_outputs=1, input_index=filter_mode, output_index=0
        )
        self.analog_frequency_modulator_fc_rxpath = analog.frequency_modulator_fc(-2.0 / fft_len)
        self.analog_agc2_xx_0 = analog.agc2_cc(1e-1, 1e-2, 1.0, 1.0)
        self.analog_agc2_xx_0.set_max_gain(65536)

        ##################################################
        # Connections
        ##################################################
        self.connect((self.digital_ofdm_sync_sc_cfb_rxpath, 0), (self.analog_frequency_modulator_fc_rxpath, 0))
        self.connect((self.analog_agc2_xx_0, 0), (self.digital_ofdm_sync_sc_cfb_rxpath, 0))
        self.connect((self.analog_agc2_xx_0, 0), (self.blocks_delay_rxpath, 0))
        self.connect((self.digital_packet_headergenerator_bb_txpath, 0), (self.digital_chunks_to_symbols_txpath, 0))
        self.connect((self.blocks_repack_bits_bb_txpath, 0), (self.digital_chunks_to_symbols_x_txpath, 0))
        self.connect((self.digital_chunks_to_symbols_txpath, 0), (self.blocks_tagged_stream_mux_txpath, 0))
        self.connect((self.digital_chunks_to_symbols_x_txpath, 0), (self.blocks_tagged_stream_mux_txpath, 1))
        self.connect((self.digital_ofdm_cyclic_prefixer_txpath, 0), (self.blocks_tag_gate_txpath, 0))
        self.connect((self.fft_vxx_txpath, 0), (self.digital_ofdm_cyclic_prefixer_txpath, 0))
        self.connect((self.blocks_tagged_stream_mux_txpath, 0), (self.digital_ofdm_carrier_allocator_cvc_txpath, 0))
        self.connect((self.digital_ofdm_carrier_allocator_cvc_txpath, 0), (self.fft_vxx_txpath, 0))
        self.connect((self.digital_header_payload_demux_rxpath, 0), (self.fft_vxx_1_rxpath, 0))
        self.connect((self.fft_vxx_1_rxpath, 0), (self.digital_ofdm_chanest_vcvc_rxpath, 0))
        self.connect(
            (self.digital_ofdm_frame_equalizer_vcvc_1_rxpath, 0), (self.digital_ofdm_serializer_vcc_header_rxpath, 0)
        )
        self.connect((self.digital_ofdm_chanest_vcvc_rxpath, 0), (self.digital_ofdm_frame_equalizer_vcvc_1_rxpath, 0))
        self.connect((self.digital_header_payload_demux_rxpath, 1), (self.fft_vxx_2_rxpath, 0))
        self.connect(
            (self.digital_ofdm_frame_equalizer_vcvc_2_rxpath, 0), (self.digital_ofdm_serializer_vcc_payload_rxpath, 0)
        )
        self.connect((self.fft_vxx_2_rxpath, 0), (self.digital_ofdm_frame_equalizer_vcvc_2_rxpath, 0))
        self.connect(
            (self.digital_ofdm_serializer_vcc_payload_rxpath, 0), (self.digital_constellation_decoder_cb_1_rxpath, 0)
        )
        self.connect((self.digital_constellation_decoder_cb_1_rxpath, 0), (self.blocks_repack_bits_bb_rxpath, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header_rxpath, 0), (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.analog_frequency_modulator_fc_rxpath, 0), (self.blocks_multiply_xx_rxpath, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_rxpath, 1), (self.digital_header_payload_demux_rxpath, 1))
        self.connect((self.blocks_multiply_xx_rxpath, 0), (self.digital_header_payload_demux_rxpath, 0))
        self.connect((self.blocks_delay_rxpath, 0), (self.blocks_multiply_xx_rxpath, 1))
        self.connect((self.digital_constellation_decoder_cb_0, 0), (self.digital_packet_headerparser_b_rxpath, 0))
        self.connect((self, 0), (self.digital_crc32_bb_txpath, 0))
        self.connect((self, 1), (self.analog_agc2_xx_0, 0))
        self.connect((self.blocks_tag_gate_txpath, 0), (self.blocks_multiply_const_vxx_0, 0))
        self.connect((self, 0), (self.blks2_selector_0, 0))
        self.connect((self.digital_crc32_bb_txpath, 0), (self.blks2_selector_0, 1))
        self.connect((self.blks2_selector_0_1, 0), (self.blocks_repack_bits_bb_txpath, 0))
        self.connect((self.blks2_selector_0, 0), (self.digital_packet_headergenerator_bb_txpath, 0))
        self.connect((self.blks2_selector_0, 0), (self.digital_additive_scrambler_bb_txpath_0, 0))
        self.connect((self.digital_additive_scrambler_bb_txpath_0, 0), (self.blks2_selector_0_1, 1))
        self.connect((self.blks2_selector_0, 0), (self.blks2_selector_0_1, 0))
        self.connect((self.digital_crc32_bb_rxpath, 0), (self.blks2_selector_0_0, 1))
        self.connect((self.digital_additive_scrambler_bb_rxpath_0, 0), (self.blks2_selector_0_0_0, 1))
        self.connect((self.blocks_repack_bits_bb_rxpath, 0), (self.digital_additive_scrambler_bb_rxpath_0, 0))
        self.connect((self.blocks_repack_bits_bb_rxpath, 0), (self.blks2_selector_0_0_0, 0))
        self.connect((self.blks2_selector_0_0_0, 0), (self.digital_crc32_bb_rxpath, 0))
        self.connect((self.blks2_selector_0_0_0, 0), (self.blks2_selector_0_0, 0))
        self.connect((self.blks2_selector_0_0, 0), (self, 0))
        self.connect((self.blocks_multiply_const_vxx_0, 0), (self.ofdm_tools_clipper_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0, 0), (self.blks2_selector_0_2, 0))

        self.connect(self.blks2_selector_0_2, self.iir_filter_xxx_1)

        self.connect(self.blks2_selector_0_2, (self.blks2_selector_0_2_0, 0))
        self.connect(self.iir_filter_xxx_1, (self.blks2_selector_0_2_0, 1))

        self.connect(self.blks2_selector_0_2_0, (self, 1))

        self.connect((self.ofdm_tools_clipper_0, 0), (self.blks2_selector_0_2, 1))

        ##################################################
        # Asynch Message Connections
        ##################################################
        self.msg_connect(
            self.digital_packet_headerparser_b_rxpath,
            "header_data",
            self.digital_header_payload_demux_rxpath,
            "header_data",
        )
Example #28
0
    def __init__(self):
        gr.top_block.__init__(self, "OFDM Rx")

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((
            1,
            1,
            1,
            -1,
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -21,
            -7,
            7,
            21,
        ), )
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) +
            range(8, 21) + range(22, 27), )
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.sync_word2 = sync_word2 = [
            0j, 0j, 0j, 0j, 0j, 0j, (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (1 + 0j), (-1 + 0j), 0j, (1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j),
            (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            0j, 0j, 0j, 0j, 0j
        ]
        self.sync_word1 = sync_word1 = [
            0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
            -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            0., 0., 0., 0., 0.
        ]
        self.samp_rate = samp_rate = 5000000
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 1)
        self.packet_len = packet_len = 96
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols)

        ##################################################
        # Blocks
        ##################################################
        self.nutaq_rtdex_source_0 = nutaq.rtdex_source(
            "nutaq_carrier_perseus_0", gr.sizeof_short, 1, 3)
        self.nutaq_rtdex_source_0.set_type(0)
        self.nutaq_rtdex_source_0.set_packet_size(8192)
        self.nutaq_rtdex_source_0.set_channels("1")
        self.nutaq_radio420_tx_0_0 = nutaq.radio420_tx(
            "nutaq_carrier_perseus_0", 1, 0)
        self.nutaq_radio420_tx_0_0.set_default_enable(1)
        self.nutaq_radio420_tx_0_0.set_default_tx_freq(2590000000)
        self.nutaq_radio420_tx_0_0.set_default_reference(0)
        self.nutaq_radio420_tx_0_0.set_default_datarate(samp_rate * 2)
        self.nutaq_radio420_tx_0_0.set_default_calibrate(1)
        self.nutaq_radio420_tx_0_0.set_default_band(1)
        self.nutaq_radio420_tx_0_0.set_default_update_rate(1)
        self.nutaq_radio420_tx_0_0.set_default_tx_vga1_gain(-10)
        self.nutaq_radio420_tx_0_0.set_default_tx_vga2_gain(15)
        self.nutaq_radio420_tx_0_0.set_default_tx_gain3(3)
        self.nutaq_radio420_tx_0_0.set_default_tx_lpf_bandwidth(4)
        self.nutaq_radio420_tx_0_0.set_default_ref_clk_ctrl(0)
        self.nutaq_radio420_tx_0_0.set_default_rf_ctrl(0)
        self.nutaq_radio420_tx_0_0.set_default_tx_gain_ctrl(0)
        self.nutaq_radio420_tx_0_0.set_default_pll_cpld_ctrl(0)

        self.nutaq_radio420_rx_0_0 = nutaq.radio420_rx(
            "nutaq_carrier_perseus_0", 1, 1)
        self.nutaq_radio420_rx_0_0.set_default_enable(1)
        self.nutaq_radio420_rx_0_0.set_default_rx_freq(2490000000)
        self.nutaq_radio420_rx_0_0.set_default_reference(0)
        self.nutaq_radio420_rx_0_0.set_default_datarate(samp_rate * 2)
        self.nutaq_radio420_rx_0_0.set_default_calibrate(1)
        self.nutaq_radio420_rx_0_0.set_default_band(1)
        self.nutaq_radio420_rx_0_0.set_default_update_rate(1)
        self.nutaq_radio420_rx_0_0.set_default_rx_lna_gain(2)
        self.nutaq_radio420_rx_0_0.set_default_rx_vga1_gain(2)
        self.nutaq_radio420_rx_0_0.set_default_rx_gain2(20)
        self.nutaq_radio420_rx_0_0.set_default_rx_gain3(8)
        self.nutaq_radio420_rx_0_0.set_default_rx_rf_filter(2)
        self.nutaq_radio420_rx_0_0.set_default_rx_lpf_bandwidth(4)
        self.nutaq_radio420_rx_0_0.set_default_ref_clk_ctrl(0)
        self.nutaq_radio420_rx_0_0.set_default_rf_ctrl(0)
        self.nutaq_radio420_rx_0_0.set_default_rx_gain_ctrl(0)
        self.nutaq_radio420_rx_0_0.set_default_pll_cpld_ctrl(0)

        self.nutaq_custom_register_0_1 = nutaq.custom_register(
            "nutaq_carrier_perseus_0", 6)
        self.nutaq_custom_register_0_1.set_index(1)
        self.nutaq_custom_register_0_1.set_default_value(6)
        self.nutaq_custom_register_0_1.set_update_rate(1)

        self.nutaq_custom_register_0_0 = nutaq.custom_register(
            "nutaq_carrier_perseus_0", 5)
        self.nutaq_custom_register_0_0.set_index(3)
        self.nutaq_custom_register_0_0.set_update_rate(1)

        self.nutaq_custom_register_0 = nutaq.custom_register(
            "nutaq_carrier_perseus_0", 5)
        self.nutaq_custom_register_0.set_index(4)
        self.nutaq_custom_register_0.set_update_rate(1)

        self.nutaq_carrier_perseus_0 = nutaq.carrier(
            0, "nutaq_carrier_perseus_0", "192.168.0.101")
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len / 4, False)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, "", True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, "", 0, "", True)
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len / 4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len / 4, length_tag_key, True, 1)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(
            (sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3,
            fft_len,
            fft_len / 4,
            length_tag_key,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            samp_rate,
            (),
        )
        self.digital_crc32_bb_0 = digital.crc32_bb(True, packet_length_tag_key,
                                                   True)
        self.digital_constellation_decoder_cb_1 = digital.constellation_decoder_cb(
            payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.blocks_tag_debug_1 = blocks.tag_debug(gr.sizeof_char * 1,
                                                   "Rx Bytes", "packet_num")
        self.blocks_tag_debug_1.set_display(True)
        self.blocks_short_to_float_0_0 = blocks.short_to_float(1, 2047)
        self.blocks_short_to_float_0 = blocks.short_to_float(1, 2047)
        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True,
            gr.GR_LSB_FIRST)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_float_to_complex_0 = blocks.float_to_complex(1)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                           fft_len + fft_len / 4)
        self.blocks_deinterleave_0 = blocks.deinterleave(
            gr.sizeof_short * 1, 1)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)
        self.analog_const_source_x_0 = analog.sig_source_i(
            0, analog.GR_CONST_WAVE, 0, 0, 1)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'),
                         (self.digital_header_payload_demux_0, 'header_data'))
        self.connect((self.analog_const_source_x_0, 0),
                     (self.nutaq_custom_register_0_0, 0))
        self.connect((self.analog_frequency_modulator_fc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_deinterleave_0, 0),
                     (self.blocks_short_to_float_0, 0))
        self.connect((self.blocks_deinterleave_0, 1),
                     (self.blocks_short_to_float_0_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_float_to_complex_0, 0),
                     (self.blocks_delay_0, 0))
        self.connect((self.blocks_float_to_complex_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0),
                     (self.digital_crc32_bb_0, 0))
        self.connect((self.blocks_short_to_float_0, 0),
                     (self.blocks_float_to_complex_0, 0))
        self.connect((self.blocks_short_to_float_0_0, 0),
                     (self.blocks_float_to_complex_0, 1))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1, 0),
                     (self.blocks_repack_bits_bb_0, 0))
        self.connect((self.digital_crc32_bb_0, 0),
                     (self.blocks_tag_debug_1, 0))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.fft_vxx_1, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0),
                     (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.digital_constellation_decoder_cb_1, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0),
                     (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1),
                     (self.digital_header_payload_demux_0, 1))
        self.connect((self.fft_vxx_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
        self.connect((self.nutaq_rtdex_source_0, 0),
                     (self.blocks_deinterleave_0, 0))
Example #29
0
 def __init__(self,len_tag_key, samp_rate, enable_crc):
     gr.hier_block2.__init__(self,
         "frame_decoder",
         gr.io_signature(1, 1, gr.sizeof_char),  # Input signature
         gr.io_signature(1, 1, gr.sizeof_char)) # Output signature
         
     self.len_tag_key = len_tag_key
     self.samp_rate = samp_rate
     
     # Set correlator. FIXME Modifiable access code
     self.digital_correlate_access_code_tag_bb_0 \
         = digital.correlate_access_code_tag_bb(
         "1010110011011101101001001110001011110010100011000010000011111100",
          0, "access")
     
     self.digital_header_payload_demux_0 = digital.header_payload_demux(
 	  32,           # header size
 	  1,            # bits per symbol
 	  0,            # guard interval
 	  len_tag_key, # length tag key
 	  "access",     # trigger tag key
 	  False,        # no idea
 	  gr.sizeof_char, # item format
 	  "rx_time",    # timing tag key (irrelevant)
           samp_rate, # sample rate
           (""),     # special tag keys
     )
     
     self.digital_packet_headerparser_b_default_0  \
         = digital.packet_headerparser_b(32, len_tag_key)
     
     self.blocks_repack_bits_bb_0  \
         = blocks.repack_bits_bb(1, 8, len_tag_key, 
                                 False, gr.GR_MSB_FIRST)
     if enable_crc:
         self.digital_crc32_bb_0  \
             = digital.crc32_bb(True, len_tag_key, True)
     
     # Debug
     self.tag_debug_correlator = blocks.tag_debug(gr.sizeof_char*1, 
                                 "Access code found.", "access");
     #self.tag_debug_header = blocks.tag_debug(gr.sizeof_char*1, 
     #                            "Header correctly obtained", len_tag_key);
     self.tag_debug_packet = blocks.tag_debug(gr.sizeof_char*1, 
                                 "Packet correctly obtained.", len_tag_key);
     
     # Debug Message after the header was found 
     #self.blocks_message_debug_0 = blocks.message_debug()
     #self.blocks_tagged_stream_to_pdu_0 \
     #    = blocks.tagged_stream_to_pdu(blocks.byte_t, len_tag_key)
     
     # PDU Tag Multiplier
     self.multiplay_length = orcatun.multiply_length_pdu(len_tag_key)
     
     ##################################################
     # Connections
     ##################################################
     
     # Correlator to Header/Payload Demux
     # Correlator triggers the HPD with stream tags
     self.connect((self.digital_correlate_access_code_tag_bb_0, 0), 
                  (self.digital_header_payload_demux_0, 0))
     
     self.connect((self.digital_correlate_access_code_tag_bb_0, 0),
                  (self.tag_debug_correlator,0))
     
     # HPD to Header Parser
     # Extracts the information from the header...
     self.connect((self.digital_header_payload_demux_0, 0), 
                  (self.digital_packet_headerparser_b_default_0, 0))
     
     # ... and pass it back to the HPD
     #self.msg_connect((self.digital_packet_headerparser_b_default_0, 
     #                  'header_data'), 
     #                 (self.digital_header_payload_demux_0, 
     #                  'header_data'))
     self.msg_connect((self.digital_packet_headerparser_b_default_0,
                       'header_data'),
                      (self.multiplay_length, 'in'))
     self.msg_connect((self.multiplay_length, 'out'),
                      (self.digital_header_payload_demux_0, 
                       'header_data'))
     
     
     # HPD payload to Repacker
     self.connect((self.digital_header_payload_demux_0, 1), 
                  (self.blocks_repack_bits_bb_0, 0))
     
     # Repacker to Stream CRC32
     # to check the CRC
     if enable_crc:
         self.connect((self.blocks_repack_bits_bb_0, 0), 
                      (self.digital_crc32_bb_0, 0))
     
     
     # Connect input and output
     self.connect((self,0), (self.digital_correlate_access_code_tag_bb_0, 0))
     if enable_crc:
         self.connect((self.digital_crc32_bb_0, 0), (self,0))
     else:
         self.connect((self.blocks_repack_bits_bb_0, 0), (self,0))
     
     
     # Debug
     if enable_crc:
         self.connect((self.digital_crc32_bb_0, 0), (self.tag_debug_packet, 0))
Example #30
0
    def __init__(self):
        gr.top_block.__init__(self, "Simu Chaine")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("Simu Chaine")
        try:
            self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
        except:
            pass
        self.top_scroll_layout = Qt.QVBoxLayout()
        self.setLayout(self.top_scroll_layout)
        self.top_scroll = Qt.QScrollArea()
        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
        self.top_scroll_layout.addWidget(self.top_scroll)
        self.top_scroll.setWidgetResizable(True)
        self.top_widget = Qt.QWidget()
        self.top_scroll.setWidget(self.top_widget)
        self.top_layout = Qt.QVBoxLayout(self.top_widget)
        self.top_grid_layout = Qt.QGridLayout()
        self.top_layout.addLayout(self.top_grid_layout)

        self.settings = Qt.QSettings("GNU Radio", "simu_chaine")
        self.restoreGeometry(self.settings.value("geometry").toByteArray())

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((
            1,
            1,
            1,
            -1,
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -21,
            -7,
            7,
            21,
        ), )
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) +
            range(8, 21) + range(22, 27), )
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.sync_word2 = sync_word2 = [
            0j, 0j, 0j, 0j, 0j, 0j, (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (1 + 0j), (-1 + 0j), 0j, (1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j),
            (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            0j, 0j, 0j, 0j, 0j
        ]
        self.sync_word1 = sync_word1 = [
            0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
            -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            0., 0., 0., 0., 0.
        ]
        self.samp_rate = samp_rate = 5000000
        self.rolloff = rolloff = 0
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 1)
        self.packet_len = packet_len = 96
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols)

        ##################################################
        # Blocks
        ##################################################
        self.uhd_usrp_source_0 = uhd.usrp_source(
            ",".join(("serial=30CEEB2", "")),
            uhd.stream_args(
                cpu_format="fc32",
                channels=range(1),
            ),
        )
        self.uhd_usrp_source_0.set_samp_rate(samp_rate)
        self.uhd_usrp_source_0.set_center_freq(2.492e9, 0)
        self.uhd_usrp_source_0.set_gain(40, 0)
        self.uhd_usrp_source_0.set_antenna("TX/RX", 0)
        self.uhd_usrp_sink_0 = uhd.usrp_sink(
            ",".join(("serial=30CEECB", "")),
            uhd.stream_args(
                cpu_format="fc32",
                channels=range(1),
            ),
            packet_length_tag_key,
        )
        self.uhd_usrp_sink_0.set_samp_rate(samp_rate)
        self.uhd_usrp_sink_0.set_center_freq(2.492e9, 0)
        self.uhd_usrp_sink_0.set_gain(100, 0)
        self.uhd_usrp_sink_0.set_antenna("TX/RX", 0)
        self.qtgui_time_sink_x_2 = qtgui.time_sink_c(
            1024,  #size
            samp_rate,  #samp_rate
            "",  #name
            1  #number of inputs
        )
        self.qtgui_time_sink_x_2.set_update_time(0.10)
        self.qtgui_time_sink_x_2.set_y_axis(-1, 1)

        self.qtgui_time_sink_x_2.set_y_label("Amplitude", "")

        self.qtgui_time_sink_x_2.enable_tags(-1, True)
        self.qtgui_time_sink_x_2.set_trigger_mode(qtgui.TRIG_MODE_FREE,
                                                  qtgui.TRIG_SLOPE_POS, 0.0, 0,
                                                  0, "")
        self.qtgui_time_sink_x_2.enable_autoscale(False)
        self.qtgui_time_sink_x_2.enable_grid(False)
        self.qtgui_time_sink_x_2.enable_control_panel(False)

        if not True:
            self.qtgui_time_sink_x_2.disable_legend()

        labels = ["", "", "", "", "", "", "", "", "", ""]
        widths = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        colors = [
            "blue", "red", "green", "black", "cyan", "magenta", "yellow",
            "dark red", "dark green", "blue"
        ]
        styles = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        markers = [-1, -1, -1, -1, -1, -1, -1, -1, -1, -1]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]

        for i in xrange(2 * 1):
            if len(labels[i]) == 0:
                if (i % 2 == 0):
                    self.qtgui_time_sink_x_2.set_line_label(
                        i, "Re{{Data {0}}}".format(i / 2))
                else:
                    self.qtgui_time_sink_x_2.set_line_label(
                        i, "Im{{Data {0}}}".format(i / 2))
            else:
                self.qtgui_time_sink_x_2.set_line_label(i, labels[i])
            self.qtgui_time_sink_x_2.set_line_width(i, widths[i])
            self.qtgui_time_sink_x_2.set_line_color(i, colors[i])
            self.qtgui_time_sink_x_2.set_line_style(i, styles[i])
            self.qtgui_time_sink_x_2.set_line_marker(i, markers[i])
            self.qtgui_time_sink_x_2.set_line_alpha(i, alphas[i])

        self._qtgui_time_sink_x_2_win = sip.wrapinstance(
            self.qtgui_time_sink_x_2.pyqwidget(), Qt.QWidget)
        self.top_layout.addWidget(self._qtgui_time_sink_x_2_win)
        self.qtgui_time_sink_x_1 = qtgui.time_sink_c(
            1024,  #size
            samp_rate,  #samp_rate
            "Rx",  #name
            1  #number of inputs
        )
        self.qtgui_time_sink_x_1.set_update_time(0.10)
        self.qtgui_time_sink_x_1.set_y_axis(-1, 1)

        self.qtgui_time_sink_x_1.set_y_label("Amplitude", "")

        self.qtgui_time_sink_x_1.enable_tags(-1, True)
        self.qtgui_time_sink_x_1.set_trigger_mode(qtgui.TRIG_MODE_FREE,
                                                  qtgui.TRIG_SLOPE_POS, 0.0, 0,
                                                  0, "")
        self.qtgui_time_sink_x_1.enable_autoscale(False)
        self.qtgui_time_sink_x_1.enable_grid(False)
        self.qtgui_time_sink_x_1.enable_control_panel(False)

        if not True:
            self.qtgui_time_sink_x_1.disable_legend()

        labels = ["", "", "", "", "", "", "", "", "", ""]
        widths = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        colors = [
            "blue", "red", "green", "black", "cyan", "magenta", "yellow",
            "dark red", "dark green", "blue"
        ]
        styles = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        markers = [-1, -1, -1, -1, -1, -1, -1, -1, -1, -1]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]

        for i in xrange(2 * 1):
            if len(labels[i]) == 0:
                if (i % 2 == 0):
                    self.qtgui_time_sink_x_1.set_line_label(
                        i, "Re{{Data {0}}}".format(i / 2))
                else:
                    self.qtgui_time_sink_x_1.set_line_label(
                        i, "Im{{Data {0}}}".format(i / 2))
            else:
                self.qtgui_time_sink_x_1.set_line_label(i, labels[i])
            self.qtgui_time_sink_x_1.set_line_width(i, widths[i])
            self.qtgui_time_sink_x_1.set_line_color(i, colors[i])
            self.qtgui_time_sink_x_1.set_line_style(i, styles[i])
            self.qtgui_time_sink_x_1.set_line_marker(i, markers[i])
            self.qtgui_time_sink_x_1.set_line_alpha(i, alphas[i])

        self._qtgui_time_sink_x_1_win = sip.wrapinstance(
            self.qtgui_time_sink_x_1.pyqwidget(), Qt.QWidget)
        self.top_layout.addWidget(self._qtgui_time_sink_x_1_win)
        self.qtgui_time_sink_x_0 = qtgui.time_sink_c(
            1024,  #size
            samp_rate,  #samp_rate
            "",  #name
            1  #number of inputs
        )
        self.qtgui_time_sink_x_0.set_update_time(0.10)
        self.qtgui_time_sink_x_0.set_y_axis(-1, 1)

        self.qtgui_time_sink_x_0.set_y_label("Amplitude", "")

        self.qtgui_time_sink_x_0.enable_tags(-1, True)
        self.qtgui_time_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE,
                                                  qtgui.TRIG_SLOPE_POS, 0.0, 0,
                                                  0, "")
        self.qtgui_time_sink_x_0.enable_autoscale(False)
        self.qtgui_time_sink_x_0.enable_grid(False)
        self.qtgui_time_sink_x_0.enable_control_panel(False)

        if not True:
            self.qtgui_time_sink_x_0.disable_legend()

        labels = ["", "", "", "", "", "", "", "", "", ""]
        widths = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        colors = [
            "blue", "red", "green", "black", "cyan", "magenta", "yellow",
            "dark red", "dark green", "blue"
        ]
        styles = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        markers = [-1, -1, -1, -1, -1, -1, -1, -1, -1, -1]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]

        for i in xrange(2 * 1):
            if len(labels[i]) == 0:
                if (i % 2 == 0):
                    self.qtgui_time_sink_x_0.set_line_label(
                        i, "Re{{Data {0}}}".format(i / 2))
                else:
                    self.qtgui_time_sink_x_0.set_line_label(
                        i, "Im{{Data {0}}}".format(i / 2))
            else:
                self.qtgui_time_sink_x_0.set_line_label(i, labels[i])
            self.qtgui_time_sink_x_0.set_line_width(i, widths[i])
            self.qtgui_time_sink_x_0.set_line_color(i, colors[i])
            self.qtgui_time_sink_x_0.set_line_style(i, styles[i])
            self.qtgui_time_sink_x_0.set_line_marker(i, markers[i])
            self.qtgui_time_sink_x_0.set_line_alpha(i, alphas[i])

        self._qtgui_time_sink_x_0_win = sip.wrapinstance(
            self.qtgui_time_sink_x_0.pyqwidget(), Qt.QWidget)
        self.top_layout.addWidget(self._qtgui_time_sink_x_0_win)
        self.pir_print_bytes_bb_0 = pir.print_bytes_bb()
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0_0 = fft.fft_vcc(fft_len, False, (()), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_packet_headergenerator_bb_0 = digital.packet_headergenerator_bb(
            header_formatter.formatter(), packet_length_tag_key)
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len / 4, False)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, "", True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, "", 0, "", True)
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len / 4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len / 4, length_tag_key, True, 1)
        self.digital_ofdm_cyclic_prefixer_0 = digital.ofdm_cyclic_prefixer(
            fft_len, fft_len + fft_len / 4, rolloff, packet_length_tag_key)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(
            (sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_ofdm_carrier_allocator_cvc_0 = digital.ofdm_carrier_allocator_cvc(
            fft_len, occupied_carriers, pilot_carriers, pilot_symbols,
            (sync_word1, sync_word2), packet_length_tag_key)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3,
            fft_len,
            fft_len / 4,
            length_tag_key,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            samp_rate,
            (),
        )
        self.digital_crc32_bb_0_0 = digital.crc32_bb(False,
                                                     packet_length_tag_key,
                                                     True)
        self.digital_crc32_bb_0 = digital.crc32_bb(True, packet_length_tag_key,
                                                   True)
        self.digital_corr_est_cc_0 = digital.corr_est_cc(
            ((0.00000 - 0.00000j, -0.23756 + 0.06817j, 0.02455 - 0.06790j,
              -0.02923 + 0.05414j, 0.00701 - 0.10558j, 0.07080 - 0.00739j,
              0.04334 + 0.00660j, -0.11691 + 0.08759j, 0.09375 + 0.06250j,
              0.04313 - 0.10143j, 0.00862 - 0.03317j, -0.05702 + 0.07170j,
              -0.09857 - 0.09157j, 0.02654 + 0.03204j, -0.03675 - 0.04537j,
              0.06443 + 0.17533j, 0.04419 + 0.00000j, 0.06443 - 0.17533j,
              -0.03675 + 0.04537j, 0.02654 - 0.03204j, -0.09857 + 0.09157j,
              -0.05702 - 0.07170j, 0.00862 + 0.03317j, 0.04313 + 0.10143j,
              0.09375 - 0.06250j, -0.11691 - 0.08759j, 0.04334 - 0.00660j,
              0.07080 + 0.00739j, 0.00701 + 0.10558j, -0.02923 - 0.05414j,
              0.02455 + 0.06790j, -0.23756 - 0.06817j, 0.00000 + 0.00000j,
              0.23756 - 0.06817j, -0.02455 + 0.06790j, 0.02923 - 0.05414j,
              -0.00701 + 0.10558j, -0.07080 + 0.00739j, -0.04334 - 0.00660j,
              0.11691 - 0.08759j, -0.09375 - 0.06250j, -0.04313 + 0.10143j,
              -0.00862 + 0.03317j, 0.05702 - 0.07170j, 0.09857 + 0.09157j,
              -0.02654 - 0.03204j, 0.03675 + 0.04537j, -0.06443 - 0.17533j,
              -0.04419 + 0.00000j, -0.06443 + 0.17533j, 0.03675 - 0.04537j,
              -0.02654 + 0.03204j, 0.09857 - 0.09157j, 0.05702 + 0.07170j,
              -0.00862 - 0.03317j, -0.04313 - 0.10143j, -0.09375 + 0.06250j,
              0.11691 + 0.08759j, -0.04334 + 0.00660j, -0.07080 - 0.00739j,
              -0.00701 - 0.10558j, 0.02923 + 0.05414j, -0.02455 - 0.06790j,
              0.23756 + 0.06817j, 0.00000 - 0.00000j, -0.23756 + 0.06817j,
              0.02455 - 0.06790j, -0.02923 + 0.05414j, 0.00701 - 0.10558j,
              0.07080 - 0.00739j, 0.04334 + 0.00660j, -0.11691 + 0.08759j,
              0.09375 + 0.06250j, 0.04313 - 0.10143j, 0.00862 - 0.03317j,
              -0.05702 + 0.07170j, -0.09857 - 0.09157j, 0.02654 + 0.03204j,
              -0.03675 - 0.04537j, 0.06443 + 0.17533j, 0.06250 + 0.03125j,
              -0.10790 - 0.08255j, 0.00182 + 0.03337j, 0.09586 - 0.07711j,
              0.06872 + 0.05573j, 0.00373 + 0.04257j, -0.03565 - 0.03853j,
              -0.14193 + 0.01821j, -0.15089 - 0.03504j, 0.14492 - 0.01154j,
              0.07984 + 0.05798j, -0.06544 - 0.02403j, 0.10927 - 0.05236j,
              0.14303 + 0.12879j, -0.04601 - 0.13003j, -0.11594 + 0.05444j,
              -0.06250 + 0.00000j, -0.11594 - 0.05444j, -0.04601 + 0.13003j,
              0.14303 - 0.12879j, 0.10927 + 0.05236j, -0.06544 + 0.02403j,
              0.07984 - 0.05798j, 0.14492 + 0.01154j, -0.15089 + 0.03504j,
              -0.14193 - 0.01821j, -0.03565 + 0.03853j, 0.00373 - 0.04257j,
              0.06872 - 0.05573j, 0.09586 + 0.07711j, 0.00182 - 0.03337j,
              -0.10790 + 0.08255j, 0.06250 - 0.03125j, -0.00527 - 0.11799j,
              0.00182 + 0.05304j, 0.05923 + 0.02687j, -0.09460 + 0.11347j,
              0.06227 - 0.14667j, -0.03565 + 0.03377j, -0.10488 - 0.05448j,
              0.02589 + 0.09754j, 0.06134 - 0.07480j, 0.07984 + 0.06226j,
              -0.02766 + 0.02419j, 0.04162 - 0.02844j, -0.09425 - 0.14799j,
              -0.04601 + 0.09145j, 0.09289 + 0.12172j, -0.06250 + 0.00000j,
              0.09289 - 0.12172j, -0.04601 - 0.09145j, -0.09425 + 0.14799j,
              0.04162 + 0.02844j, -0.02766 - 0.02419j, 0.07984 - 0.06226j,
              0.06134 + 0.07480j, 0.02589 - 0.09754j, -0.10488 + 0.05448j,
              -0.03565 - 0.03377j, 0.06227 + 0.14667j, -0.09460 - 0.11347j,
              0.05923 - 0.02687j, 0.00182 - 0.05304j, -0.00527 + 0.11799j,
              0.06250 + 0.03125j, -0.10790 - 0.08255j, 0.00182 + 0.03337j,
              0.09586 - 0.07711j, 0.06872 + 0.05573j, 0.00373 + 0.04257j,
              -0.03565 - 0.03853j, -0.14193 + 0.01821j, -0.15089 - 0.03504j,
              0.14492 - 0.01154j, 0.07984 + 0.05798j, -0.06544 - 0.02403j,
              0.10927 - 0.05236j, 0.14303 + 0.12879j, -0.04601 - 0.13003j,
              -0.11594 + 0.05444j)), 1, 0, 0.999999999)
        self.digital_constellation_decoder_cb_1 = digital.constellation_decoder_cb(
            payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.digital_chunks_to_symbols_xx_0_0 = digital.chunks_to_symbols_bc(
            (payload_mod.points()), 1)
        self.digital_chunks_to_symbols_xx_0 = digital.chunks_to_symbols_bc(
            (header_mod.points()), 1)
        self.blocks_tagged_stream_mux_0 = blocks.tagged_stream_mux(
            gr.sizeof_gr_complex * 1, "packet_len", 0)
        self.blocks_tag_gate_0 = blocks.tag_gate(gr.sizeof_gr_complex * 1,
                                                 True)
        self.blocks_repack_bits_bb_0_0 = blocks.repack_bits_bb(
            8, payload_mod.bits_per_symbol(), packet_length_tag_key, False,
            gr.GR_LSB_FIRST)
        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True,
            gr.GR_LSB_FIRST)
        self.blocks_null_sink_1 = blocks.null_sink(gr.sizeof_char * 1)
        self.blocks_null_sink_0 = blocks.null_sink(gr.sizeof_gr_complex * 1)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_vcc((0.05, ))
        self.blocks_file_sink_1 = blocks.file_sink(
            gr.sizeof_char * 1, "/home/rhidra/pir/test/test_modules/out.txt",
            False)
        self.blocks_file_sink_1.set_unbuffered(False)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                           fft_len + fft_len / 4)
        self.analog_random_source_x_0 = blocks.vector_source_b(
            map(int, numpy.random.randint(0, 255, 1000)), True)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'),
                         (self.digital_header_payload_demux_0, 'header_data'))
        self.connect((self.analog_frequency_modulator_fc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.analog_random_source_x_0, 0),
                     (self.digital_crc32_bb_0_0, 0))
        self.connect((self.analog_random_source_x_0, 0),
                     (self.pir_print_bytes_bb_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_multiply_const_vxx_0, 0),
                     (self.blocks_tag_gate_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_corr_est_cc_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0),
                     (self.digital_crc32_bb_0, 0))
        self.connect((self.blocks_repack_bits_bb_0_0, 0),
                     (self.digital_chunks_to_symbols_xx_0_0, 0))
        self.connect((self.blocks_tag_gate_0, 0),
                     (self.qtgui_time_sink_x_2, 0))
        self.connect((self.blocks_tag_gate_0, 0), (self.uhd_usrp_sink_0, 0))
        self.connect((self.blocks_tagged_stream_mux_0, 0),
                     (self.digital_ofdm_carrier_allocator_cvc_0, 0))
        self.connect((self.blocks_tagged_stream_mux_0, 0),
                     (self.qtgui_time_sink_x_0, 0))
        self.connect((self.digital_chunks_to_symbols_xx_0, 0),
                     (self.blocks_tagged_stream_mux_0, 0))
        self.connect((self.digital_chunks_to_symbols_xx_0_0, 0),
                     (self.blocks_tagged_stream_mux_0, 1))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1, 0),
                     (self.blocks_repack_bits_bb_0, 0))
        self.connect((self.digital_corr_est_cc_0, 0),
                     (self.blocks_null_sink_0, 0))
        self.connect((self.digital_crc32_bb_0, 0),
                     (self.blocks_file_sink_1, 0))
        self.connect((self.digital_crc32_bb_0, 0),
                     (self.blocks_null_sink_1, 0))
        self.connect((self.digital_crc32_bb_0_0, 0),
                     (self.blocks_repack_bits_bb_0_0, 0))
        self.connect((self.digital_crc32_bb_0_0, 0),
                     (self.digital_packet_headergenerator_bb_0, 0))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.fft_vxx_1, 0))
        self.connect((self.digital_ofdm_carrier_allocator_cvc_0, 0),
                     (self.fft_vxx_0_0, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_cyclic_prefixer_0, 0),
                     (self.blocks_multiply_const_vxx_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0),
                     (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.digital_constellation_decoder_cb_1, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0),
                     (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1),
                     (self.digital_header_payload_demux_0, 1))
        self.connect((self.digital_packet_headergenerator_bb_0, 0),
                     (self.digital_chunks_to_symbols_xx_0, 0))
        self.connect((self.fft_vxx_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_0_0, 0),
                     (self.digital_ofdm_cyclic_prefixer_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
        self.connect((self.uhd_usrp_source_0, 0), (self.blocks_delay_0, 0))
        self.connect((self.uhd_usrp_source_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_0, 0))
        self.connect((self.uhd_usrp_source_0, 0),
                     (self.qtgui_time_sink_x_1, 0))
Example #31
0
    def __init__(self):
        gr.top_block.__init__(self, "Receive")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("Receive")
        try:
            self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
        except:
            pass
        self.top_scroll_layout = Qt.QVBoxLayout()
        self.setLayout(self.top_scroll_layout)
        self.top_scroll = Qt.QScrollArea()
        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
        self.top_scroll_layout.addWidget(self.top_scroll)
        self.top_scroll.setWidgetResizable(True)
        self.top_widget = Qt.QWidget()
        self.top_scroll.setWidget(self.top_widget)
        self.top_layout = Qt.QVBoxLayout(self.top_widget)
        self.top_grid_layout = Qt.QGridLayout()
        self.top_layout.addLayout(self.top_grid_layout)

        self.settings = Qt.QSettings("GNU Radio", "receive")
        self.restoreGeometry(self.settings.value("geometry").toByteArray())

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((
            1,
            1,
            1,
            -1,
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -21,
            -7,
            7,
            21,
        ), )
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) +
            range(8, 21) + range(22, 27), )
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.sync_word2 = sync_word2 = [
            0j, 0j, 0j, 0j, 0j, 0j, (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (1 + 0j), (-1 + 0j), 0j, (1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j),
            (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            0j, 0j, 0j, 0j, 0j
        ]
        self.sync_word1 = sync_word1 = [
            0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
            -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            0., 0., 0., 0., 0.
        ]
        self.samp_rate = samp_rate = 5000000
        self.rolloff = rolloff = 0
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 1)
        self.packet_len = packet_len = 96
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols)

        ##################################################
        # Blocks
        ##################################################
        self.uhd_usrp_source_0 = uhd.usrp_source(
            ",".join(("serial=30CEECB", "")),
            uhd.stream_args(
                cpu_format="fc32",
                channels=range(1),
            ),
        )
        self.uhd_usrp_source_0.set_samp_rate(samp_rate)
        self.uhd_usrp_source_0.set_center_freq(2.492e9, 0)
        self.uhd_usrp_source_0.set_gain(40, 0)
        self.uhd_usrp_source_0.set_antenna("TX/RX", 0)
        self.qtgui_time_sink_x_0_0 = qtgui.time_sink_c(
            10240,  #size
            samp_rate,  #samp_rate
            "Sortie",  #name
            1  #number of inputs
        )
        self.qtgui_time_sink_x_0_0.set_update_time(0.10)
        self.qtgui_time_sink_x_0_0.set_y_axis(-1, 1)

        self.qtgui_time_sink_x_0_0.set_y_label("Amplitude", "")

        self.qtgui_time_sink_x_0_0.enable_tags(-1, True)
        self.qtgui_time_sink_x_0_0.set_trigger_mode(qtgui.TRIG_MODE_FREE,
                                                    qtgui.TRIG_SLOPE_POS, 0.0,
                                                    0, 0, "")
        self.qtgui_time_sink_x_0_0.enable_autoscale(False)
        self.qtgui_time_sink_x_0_0.enable_grid(False)
        self.qtgui_time_sink_x_0_0.enable_control_panel(False)

        if not True:
            self.qtgui_time_sink_x_0_0.disable_legend()

        labels = ["", "", "", "", "", "", "", "", "", ""]
        widths = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        colors = [
            "blue", "red", "green", "black", "cyan", "magenta", "yellow",
            "dark red", "dark green", "blue"
        ]
        styles = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        markers = [-1, -1, -1, -1, -1, -1, -1, -1, -1, -1]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]

        for i in xrange(2 * 1):
            if len(labels[i]) == 0:
                if (i % 2 == 0):
                    self.qtgui_time_sink_x_0_0.set_line_label(
                        i, "Re{{Data {0}}}".format(i / 2))
                else:
                    self.qtgui_time_sink_x_0_0.set_line_label(
                        i, "Im{{Data {0}}}".format(i / 2))
            else:
                self.qtgui_time_sink_x_0_0.set_line_label(i, labels[i])
            self.qtgui_time_sink_x_0_0.set_line_width(i, widths[i])
            self.qtgui_time_sink_x_0_0.set_line_color(i, colors[i])
            self.qtgui_time_sink_x_0_0.set_line_style(i, styles[i])
            self.qtgui_time_sink_x_0_0.set_line_marker(i, markers[i])
            self.qtgui_time_sink_x_0_0.set_line_alpha(i, alphas[i])

        self._qtgui_time_sink_x_0_0_win = sip.wrapinstance(
            self.qtgui_time_sink_x_0_0.pyqwidget(), Qt.QWidget)
        self.top_layout.addWidget(self._qtgui_time_sink_x_0_0_win)
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len / 4, False)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, "", True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, "", 0, "", True)
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len / 4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len / 4, length_tag_key, True, 1)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(
            (sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3,
            fft_len,
            fft_len / 4,
            length_tag_key,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            samp_rate,
            (),
        )
        self.digital_crc32_bb_0 = digital.crc32_bb(True, packet_length_tag_key,
                                                   True)
        self.digital_constellation_decoder_cb_1 = digital.constellation_decoder_cb(
            payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.blocks_tagged_stream_to_pdu_0 = blocks.tagged_stream_to_pdu(
            blocks.byte_t, "packet_len")
        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True,
            gr.GR_LSB_FIRST)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_message_debug_0 = blocks.message_debug()
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                           fft_len + fft_len / 4)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.blocks_tagged_stream_to_pdu_0, 'pdus'),
                         (self.blocks_message_debug_0, 'print_pdu'))
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'),
                         (self.digital_header_payload_demux_0, 'header_data'))
        self.connect((self.analog_frequency_modulator_fc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0),
                     (self.digital_crc32_bb_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1, 0),
                     (self.blocks_repack_bits_bb_0, 0))
        self.connect((self.digital_crc32_bb_0, 0),
                     (self.blocks_tagged_stream_to_pdu_0, 0))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.fft_vxx_1, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0),
                     (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.digital_constellation_decoder_cb_1, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0),
                     (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1),
                     (self.digital_header_payload_demux_0, 1))
        self.connect((self.fft_vxx_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
        self.connect((self.uhd_usrp_source_0, 0), (self.blocks_delay_0, 0))
        self.connect((self.uhd_usrp_source_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_0, 0))
        self.connect((self.uhd_usrp_source_0, 0),
                     (self.qtgui_time_sink_x_0_0, 0))
Example #32
0
	def __init__(self):
		grc_wxgui.top_block_gui.__init__(self, title="OFDM Rx")
		_icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
		self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))

		##################################################
		# Variables
		##################################################
		self.occupied_carriers = occupied_carriers = (range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) + range(8, 21) + range(22, 27),)
		self.length_tag_name = length_tag_name = "frame_len"
		self.sync_word2 = sync_word2 = (0, 0, 0, 0, 0, 1, 1, -1.0, -1, 1.0, 1, 1.0, -1, -1.0, -1, 1.0, 1, -1.0, 1, 1.0, 1, -1.0, -1, -1.0, -1, 1.0, -1, 1.0, -1, 1.0, 1, -1.0, 0, 1.0, 1, -1.0, 1, 1.0, -1, -1.0, 1, -1.0, -1, -1.0, 1, 1.0, 1, -1.0, 1, 1.0, -1, 1.0, -1, -1.0, -1, 1.0, 1, -1.0, 0, 0, 0, 0, 0, 0)
		self.sync_word1 = sync_word1 = (0, 0, 0, 0, 0, 0, 0, -1.0, 0, 1.0, 0, 1.0, 0, -1.0, 0, 1.0, 0, -1.0, 0, 1.0, 0, -1.0, 0, -1.0, 0, 1.0, 0, 1.0, 0, 1.0, 0, -1.0, 0, 1.0, 0, -1.0, 0, 1.0, 0, -1.0, 0, -1.0, 0, -1.0, 0, 1.0, 0, -1.0, 0, 1.0, 0, 1.0, 0, -1.0, 0, 1.0, 0, -1.0, 0, 0, 0, 0, 0, 0)
		self.samp_rate = samp_rate = 3200000
		self.pilot_symbols = pilot_symbols = ((1, 1, 1, -1,),)
		self.pilot_carriers = pilot_carriers = ((-21, -7, 7, 21,),)
		self.payload_mod = payload_mod = digital.constellation_qpsk()
		self.header_mod = header_mod = digital.constellation_bpsk()
		self.header_formatter = header_formatter = digital.packet_header_ofdm(occupied_carriers, 1, length_tag_name)
		self.fft_len = fft_len = 64

		##################################################
		# Blocks
		##################################################
		self.gr_delay_0 = gr.delay(gr.sizeof_gr_complex*1, fft_len+fft_len/4)
		self.fft_vxx_0_0 = fft.fft_vcc(fft_len, True, (), True, 1)
		self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (), True, 1)
		self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(header_formatter.formatter())
		self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(fft_len, fft_len/4, False)
		self.digital_ofdm_serializer_vcc_1 = digital.ofdm_serializer_vcc(fft_len, occupied_carriers, "length_tag_key", "", 1, "", True)
		self.digital_ofdm_serializer_vcc_0 = digital.ofdm_serializer_vcc(fft_len, occupied_carriers, length_tag_name, "", 0, "", True)
		self.digital_ofdm_frame_equalizer_vcvc_0_0 = digital.ofdm_frame_equalizer_vcvc(digital.ofdm_equalizer_simpledfe(fft_len, header_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols).base(), fft_len/4, length_tag_name, True, 0)
		self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(digital.ofdm_equalizer_simpledfe(fft_len, header_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols, 2).base(), fft_len/4, "length_tag_key", False, 0)
		self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc((sync_word1), (sync_word2), 2, 0, -1, False)
		self.digital_header_payload_demux_0 = digital.header_payload_demux(3, fft_len, fft_len/4, length_tag_name, "", True, gr.sizeof_gr_complex)
		self.digital_constellation_decoder_cb_0_0 = digital.constellation_decoder_cb(header_mod.base())
		self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(payload_mod.base())
		self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex*1, samp_rate)
		self.blocks_tag_debug_0 = blocks.tag_debug(gr.sizeof_char*1, "Rx Packets")
		self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
		self.analog_noise_source_x_0 = analog.noise_source_c(analog.GR_GAUSSIAN, 1, 0)
		self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(-2.0/fft_len)

		##################################################
		# Connections
		##################################################
		self.connect((self.digital_ofdm_frame_equalizer_vcvc_0_0, 0), (self.digital_ofdm_serializer_vcc_0, 0))
		self.connect((self.digital_header_payload_demux_0, 0), (self.fft_vxx_0, 0))
		self.connect((self.fft_vxx_0, 0), (self.digital_ofdm_chanest_vcvc_0, 0))
		self.connect((self.digital_ofdm_chanest_vcvc_0, 0), (self.digital_ofdm_frame_equalizer_vcvc_0_0, 0))
		self.connect((self.digital_constellation_decoder_cb_0_0, 0), (self.digital_packet_headerparser_b_0, 0))
		self.connect((self.digital_ofdm_serializer_vcc_0, 0), (self.digital_constellation_decoder_cb_0_0, 0))
		self.connect((self.digital_constellation_decoder_cb_0, 0), (self.blocks_tag_debug_0, 0))
		self.connect((self.fft_vxx_0_0, 0), (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
		self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0), (self.digital_ofdm_serializer_vcc_1, 0))
		self.connect((self.digital_header_payload_demux_0, 1), (self.fft_vxx_0_0, 0))
		self.connect((self.digital_ofdm_serializer_vcc_1, 0), (self.digital_constellation_decoder_cb_0, 0))
		self.connect((self.blocks_throttle_0, 0), (self.digital_ofdm_sync_sc_cfb_0, 0))
		self.connect((self.blocks_throttle_0, 0), (self.gr_delay_0, 0))
		self.connect((self.analog_noise_source_x_0, 0), (self.blocks_throttle_0, 0))
		self.connect((self.analog_frequency_modulator_fc_0, 0), (self.blocks_multiply_xx_0, 0))
		self.connect((self.digital_ofdm_sync_sc_cfb_0, 0), (self.analog_frequency_modulator_fc_0, 0))
		self.connect((self.gr_delay_0, 0), (self.blocks_multiply_xx_0, 1))
		self.connect((self.digital_ofdm_sync_sc_cfb_0, 1), (self.digital_header_payload_demux_0, 1))
		self.connect((self.blocks_multiply_xx_0, 0), (self.digital_header_payload_demux_0, 0))

		##################################################
		# Asynch Message Connections
		##################################################
		self.msg_connect(self.digital_packet_headerparser_b_0, "header_data", self.digital_header_payload_demux_0, "header_data")
Example #33
0
    def __init__(self):
        grc_wxgui.top_block_gui.__init__(self, title="OFDM Rx")
        _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
        self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((
            1,
            1,
            1,
            -1,
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -21,
            -7,
            7,
            21,
        ), )
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) +
            range(8, 21) + range(22, 27), )
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.sync_word2 = sync_word2 = [
            0j, 0j, 0j, 0j, 0j, 0j, (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (1 + 0j), (-1 + 0j), 0j, (1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j),
            (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            0j, 0j, 0j, 0j, 0j
        ]
        self.sync_word1 = sync_word1 = [
            0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
            -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            0., 0., 0., 0., 0.
        ]
        self.samp_rate = samp_rate = 200000
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 1)
        self.packet_len = packet_len = 96
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols)
        self.freq = freq = 4033e6

        ##################################################
        # Blocks
        ##################################################
        self.wxgui_waterfallsink2_0 = waterfallsink2.waterfall_sink_c(
            self.GetWin(),
            baseband_freq=freq,
            dynamic_range=100,
            ref_level=0,
            ref_scale=2.0,
            sample_rate=samp_rate,
            fft_size=512,
            fft_rate=15,
            average=False,
            avg_alpha=None,
            title="Waterfall Plot",
        )
        self.Add(self.wxgui_waterfallsink2_0.win)
        self.wxgui_scopesink2_0 = scopesink2.scope_sink_c(
            self.GetWin(),
            title="Scope Plot",
            sample_rate=samp_rate,
            v_scale=0,
            v_offset=0,
            t_scale=0,
            ac_couple=False,
            xy_mode=False,
            num_inputs=1,
            trig_mode=wxgui.TRIG_MODE_AUTO,
            y_axis_label="Counts",
        )
        self.Add(self.wxgui_scopesink2_0.win)
        self.osmosdr_source_0 = osmosdr.source(args="numchan=" + str(1) + " " +
                                               "hackrf=1")
        self.osmosdr_source_0.set_sample_rate(samp_rate)
        self.osmosdr_source_0.set_center_freq(freq, 0)
        self.osmosdr_source_0.set_freq_corr(0, 0)
        self.osmosdr_source_0.set_dc_offset_mode(0, 0)
        self.osmosdr_source_0.set_iq_balance_mode(0, 0)
        self.osmosdr_source_0.set_gain_mode(False, 0)
        self.osmosdr_source_0.set_gain(10, 0)
        self.osmosdr_source_0.set_if_gain(20, 0)
        self.osmosdr_source_0.set_bb_gain(20, 0)
        self.osmosdr_source_0.set_antenna("", 0)
        self.osmosdr_source_0.set_bandwidth(0, 0)

        self.low_pass_filter_0 = filter.fir_filter_ccf(
            1,
            firdes.low_pass(1, samp_rate, 45e3, 1.25e3, firdes.WIN_HAMMING,
                            6.76))
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len / 4, False)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, "", True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, "", 0, "", True)
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len / 4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len / 4, length_tag_key, True, 1)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(
            (sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3,
            fft_len,
            fft_len / 4,
            length_tag_key,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            samp_rate,
            (),
        )
        self.digital_crc32_bb_0 = digital.crc32_bb(True, packet_length_tag_key,
                                                   True)
        self.digital_constellation_decoder_cb_1 = digital.constellation_decoder_cb(
            payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.blocks_tag_debug_1 = blocks.tag_debug(gr.sizeof_char * 1,
                                                   "Rx Bytes", "")
        self.blocks_tag_debug_1.set_display(True)
        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True,
            gr.GR_LSB_FIRST)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_file_sink_0 = blocks.file_sink(
            gr.sizeof_char * 1, "/home/bkbilly/Desktop/hello_out.txt", False)
        self.blocks_file_sink_0.set_unbuffered(False)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                           fft_len + fft_len / 4)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'),
                         (self.digital_header_payload_demux_0, 'header_data'))
        self.connect((self.analog_frequency_modulator_fc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0),
                     (self.digital_crc32_bb_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1, 0),
                     (self.blocks_repack_bits_bb_0, 0))
        self.connect((self.digital_crc32_bb_0, 0),
                     (self.blocks_file_sink_0, 0))
        self.connect((self.digital_crc32_bb_0, 0),
                     (self.blocks_tag_debug_1, 0))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.fft_vxx_1, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0),
                     (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.digital_constellation_decoder_cb_1, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.wxgui_scopesink2_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0),
                     (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1),
                     (self.digital_header_payload_demux_0, 1))
        self.connect((self.fft_vxx_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
        self.connect((self.low_pass_filter_0, 0), (self.blocks_delay_0, 0))
        self.connect((self.low_pass_filter_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_0, 0))
        self.connect((self.low_pass_filter_0, 0),
                     (self.wxgui_waterfallsink2_0, 0))
        self.connect((self.osmosdr_source_0, 0), (self.low_pass_filter_0, 0))
Example #34
0
    def __init__(self, corr_tag_delay=131):
        gr.top_block.__init__(self, "Lab3 BER")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("Lab3 BER")
        qtgui.util.check_set_qss()
        try:
            self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
        except:
            pass
        self.top_scroll_layout = Qt.QVBoxLayout()
        self.setLayout(self.top_scroll_layout)
        self.top_scroll = Qt.QScrollArea()
        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
        self.top_scroll_layout.addWidget(self.top_scroll)
        self.top_scroll.setWidgetResizable(True)
        self.top_widget = Qt.QWidget()
        self.top_scroll.setWidget(self.top_widget)
        self.top_layout = Qt.QVBoxLayout(self.top_widget)
        self.top_grid_layout = Qt.QGridLayout()
        self.top_layout.addLayout(self.top_grid_layout)

        self.settings = Qt.QSettings("GNU Radio", "lab3_ber")

        try:
            if StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
                self.restoreGeometry(
                    self.settings.value("geometry").toByteArray())
            else:
                self.restoreGeometry(self.settings.value("geometry"))
        except:
            pass

        ##################################################
        # Parameters
        ##################################################
        self.corr_tag_delay = corr_tag_delay

        ##################################################
        # Variables
        ##################################################
        self.rolloff = rolloff = 0.5
        self.sps = sps = 4
        self.snr_default = snr_default = 8.5
        self.rolloff_ = rolloff_ = rolloff
        self.payload_len = payload_len = 31
        self.num_tag_key = num_tag_key = "packet_num"
        self.nfilts_pfb = nfilts_pfb = 32
        self.mark_delays = mark_delays = [0, 0, 34, 56, 87, 119]
        self.len_tag_key = len_tag_key = "packet_length"
        self.header_len = header_len = 32
        self.cw_len = cw_len = 32
        self.tag_s = tag_s = gr.tag_utils.python_to_tag(
            (0, pmt.intern(len_tag_key), pmt.from_long(payload_len),
             pmt.intern("vect_test_src")))
        self.tag0 = tag0 = gr.tag_utils.python_to_tag(
            (0, pmt.intern(len_tag_key), pmt.from_long(cw_len),
             pmt.intern("vect_cw_src")))
        self.sync_seq = sync_seq = [
            1, 1, -1, 1, -1, 1, 1, 1, -1, -1, 1, -1, -1, -1, 1, -1, -1, 1, 1,
            -1, 1, 1, -1, -1, -1, -1, 1, 1, -1, -1, 1, 1, 1, -1, -1, 1, 1, 1,
            -1, -1, 1, -1, -1, 1, -1, 1, -1, 1, -1, -1, -1, 1, -1, 1, 1, -1,
            -1, -1, 1, 1, 1, 1, 1, 1
        ]
        self.snr_db = snr_db = snr_default
        self.samp_rate = samp_rate = 1e3
        self.rrc_filter = rrc_filter = firdes.root_raised_cosine(
            4, sps, 1, rolloff_, 32 * sps + 1)
        self.reset_ber = reset_ber = 0
        self.pn_order = pn_order = np.round(np.log2(payload_len + 1))
        self.pn6_padded = pn6_padded = [
            1, 1, 1, 1, 1, 1, -1, 1, -1, 1, -1, 1, 1, -1, -1, 1, 1, -1, 1, 1,
            1, -1, 1, 1, -1, 1, -1, -1, 1, -1, -1, 1, 1, 1, -1, -1, -1, 1, -1,
            1, 1, 1, 1, -1, -1, 1, -1, 1, -1, -1, -1, 1, 1, -1, -1, -1, -1, 1,
            -1, -1, -1 - 1 - 1, 0, 0, 0, 0, 0, 0, 0, 0, 0
        ]
        self.pn6 = pn6 = [
            1, 1, 1, 1, 1, 1, -1, 1, -1, 1, -1, 1, 1, -1, -1, 1, 1, -1, 1, 1,
            1, -1, 1, 1, -1, 1, -1, -1, 1, -1, -1, 1, 1, 1, -1, -1, -1, 1, -1,
            1, 1, 1, 1, -1, -1, 1, -1, 1, -1, -1, -1, 1, 1, -1, -1, -1, -1, 1,
            -1, -1, -1 - 1 - 1
        ]
        self.pn5 = pn5 = [
            1, -1, 1, -1, 1, 1, 1, -1, 1, 1, -1, -1, -1, 1, 1, 1, 1, 1, -1, -1,
            1, 1, -1, 1, -1, -1, 1, -1, -1, -1, -1
        ]
        self.pi = pi = np.pi
        self.pfb_filter = pfb_filter = firdes.root_raised_cosine(
            nfilts_pfb, nfilts_pfb * sps, 1, rolloff_,
            nfilts_pfb * 11 * sps + 1)
        self.mark_delay = mark_delay = mark_delays[sps]
        self.header_formatter_0 = header_formatter_0 = digital.packet_header_default(
            header_len, len_tag_key, num_tag_key, 1)
        self.header_formatter = header_formatter = digital.packet_header_default(
            header_len, len_tag_key, num_tag_key, 1)
        self.fc = fc = 900e6
        self.const = const = digital.constellation_calcdist(
            digital.psk_2()[0],
            digital.psk_2()[1], 2, 1).base()
        self.buffer_size = buffer_size = 32768
        self.bFilter = bFilter = 1
        self.agc_rate = agc_rate = 1e-4

        ##################################################
        # Blocks
        ##################################################
        self._snr_db_range = Range(0, 20, 0.5, snr_default, 200)
        self._snr_db_win = RangeWidget(self._snr_db_range, self.set_snr_db,
                                       'SNR (dB)', "counter_slider", float)
        self.top_grid_layout.addWidget(self._snr_db_win)
        self._rolloff__range = Range(0.01, 0.99, 0.01, rolloff, 200)
        self._rolloff__win = RangeWidget(self._rolloff__range,
                                         self.set_rolloff_, 'Beta (Excess BW)',
                                         "counter_slider", float)
        self.top_grid_layout.addWidget(self._rolloff__win)
        _reset_ber_push_button = Qt.QPushButton('Reset BER')
        _reset_ber_push_button = Qt.QPushButton('Reset BER')
        self._reset_ber_choices = {'Pressed': 1, 'Released': 0}
        _reset_ber_push_button.pressed.connect(
            lambda: self.set_reset_ber(self._reset_ber_choices['Pressed']))
        _reset_ber_push_button.released.connect(
            lambda: self.set_reset_ber(self._reset_ber_choices['Released']))
        self.top_grid_layout.addWidget(_reset_ber_push_button)
        # Create the options list
        self._bFilter_options = (
            1,
            2,
        )
        # Create the labels list
        self._bFilter_labels = (
            'Raised Cosine (Mis-Matched)',
            'Root Raised Cosine (Matched)',
        )
        # Create the combo box
        self._bFilter_tool_bar = Qt.QToolBar(self)
        self._bFilter_tool_bar.addWidget(Qt.QLabel('TX Filter Select' + ": "))
        self._bFilter_combo_box = Qt.QComboBox()
        self._bFilter_tool_bar.addWidget(self._bFilter_combo_box)
        for _label in self._bFilter_labels:
            self._bFilter_combo_box.addItem(_label)
        self._bFilter_callback = lambda i: Qt.QMetaObject.invokeMethod(
            self._bFilter_combo_box, "setCurrentIndex",
            Qt.Q_ARG("int", self._bFilter_options.index(i)))
        self._bFilter_callback(self.bFilter)
        self._bFilter_combo_box.currentIndexChanged.connect(
            lambda i: self.set_bFilter(self._bFilter_options[i]))
        # Create the radio buttons
        self.top_grid_layout.addWidget(self._bFilter_tool_bar)
        self._agc_rate_range = Range(1e-4, 1e-3, 1e-4, 1e-4, 200)
        self._agc_rate_win = RangeWidget(self._agc_rate_range,
                                         self.set_agc_rate, 'AGC Decay Rate',
                                         "counter_slider", float)
        self.top_grid_layout.addWidget(self._agc_rate_win)
        self.wes_packet_tx_0 = wes_packet_tx(
            cw_len=cw_len,
            payload_len=payload_len,
            samp_rate=samp_rate,
        )
        self.wes_ber_0 = wes.ber(1, reset_ber)
        self.qtgui_number_sink_0_0 = qtgui.number_sink(gr.sizeof_float, 0,
                                                       qtgui.NUM_GRAPH_NONE, 1)
        self.qtgui_number_sink_0_0.set_update_time(0.10)
        self.qtgui_number_sink_0_0.set_title("# of Errors")

        labels = ['', '', '', '', '', '', '', '', '', '']
        units = ['', '', '', '', '', '', '', '', '', '']
        colors = [("black", "black"), ("black", "black"), ("black", "black"),
                  ("black", "black"), ("black", "black"), ("black", "black"),
                  ("black", "black"), ("black", "black"), ("black", "black"),
                  ("black", "black")]
        factor = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]

        for i in range(1):
            self.qtgui_number_sink_0_0.set_min(i, -1)
            self.qtgui_number_sink_0_0.set_max(i, 1)
            self.qtgui_number_sink_0_0.set_color(i, colors[i][0], colors[i][1])
            if len(labels[i]) == 0:
                self.qtgui_number_sink_0_0.set_label(i, "Data {0}".format(i))
            else:
                self.qtgui_number_sink_0_0.set_label(i, labels[i])
            self.qtgui_number_sink_0_0.set_unit(i, units[i])
            self.qtgui_number_sink_0_0.set_factor(i, factor[i])

        self.qtgui_number_sink_0_0.enable_autoscale(False)
        self._qtgui_number_sink_0_0_win = sip.wrapinstance(
            self.qtgui_number_sink_0_0.pyqwidget(), Qt.QWidget)
        self.top_grid_layout.addWidget(self._qtgui_number_sink_0_0_win)
        self.qtgui_number_sink_0 = qtgui.number_sink(gr.sizeof_float, 0,
                                                     qtgui.NUM_GRAPH_HORIZ, 1)
        self.qtgui_number_sink_0.set_update_time(0.10)
        self.qtgui_number_sink_0.set_title("BER")

        labels = ['', '', '', '', '', '', '', '', '', '']
        units = ['', '', '', '', '', '', '', '', '', '']
        colors = [("black", "black"), ("black", "black"), ("black", "black"),
                  ("black", "black"), ("black", "black"), ("black", "black"),
                  ("black", "black"), ("black", "black"), ("black", "black"),
                  ("black", "black")]
        factor = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]

        for i in range(1):
            self.qtgui_number_sink_0.set_min(i, -1)
            self.qtgui_number_sink_0.set_max(i, 1)
            self.qtgui_number_sink_0.set_color(i, colors[i][0], colors[i][1])
            if len(labels[i]) == 0:
                self.qtgui_number_sink_0.set_label(i, "Data {0}".format(i))
            else:
                self.qtgui_number_sink_0.set_label(i, labels[i])
            self.qtgui_number_sink_0.set_unit(i, units[i])
            self.qtgui_number_sink_0.set_factor(i, factor[i])

        self.qtgui_number_sink_0.enable_autoscale(False)
        self._qtgui_number_sink_0_win = sip.wrapinstance(
            self.qtgui_number_sink_0.pyqwidget(), Qt.QWidget)
        self.top_grid_layout.addWidget(self._qtgui_number_sink_0_win)
        self.qtgui_const_sink_x_0 = qtgui.const_sink_c(
            1024,  #size
            "",  #name
            2  #number of inputs
        )
        self.qtgui_const_sink_x_0.set_update_time(0.10)
        self.qtgui_const_sink_x_0.set_y_axis(-2, 2)
        self.qtgui_const_sink_x_0.set_x_axis(-2, 2)
        self.qtgui_const_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE,
                                                   qtgui.TRIG_SLOPE_POS, 0.0,
                                                   0, "")
        self.qtgui_const_sink_x_0.enable_autoscale(False)
        self.qtgui_const_sink_x_0.enable_grid(True)
        self.qtgui_const_sink_x_0.enable_axis_labels(True)

        labels = ['', '', '', '', '', '', '', '', '', '']
        widths = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        colors = [
            "blue", "red", "red", "red", "red", "red", "red", "red", "red",
            "red"
        ]
        styles = [0, 1, 0, 0, 0, 0, 0, 0, 0, 0]
        markers = [0, -1, 0, 0, 0, 0, 0, 0, 0, 0]
        alphas = [1.0, 0.5, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]

        for i in range(2):
            if len(labels[i]) == 0:
                self.qtgui_const_sink_x_0.set_line_label(
                    i, "Data {0}".format(i))
            else:
                self.qtgui_const_sink_x_0.set_line_label(i, labels[i])
            self.qtgui_const_sink_x_0.set_line_width(i, widths[i])
            self.qtgui_const_sink_x_0.set_line_color(i, colors[i])
            self.qtgui_const_sink_x_0.set_line_style(i, styles[i])
            self.qtgui_const_sink_x_0.set_line_marker(i, markers[i])
            self.qtgui_const_sink_x_0.set_line_alpha(i, alphas[i])

        self._qtgui_const_sink_x_0_win = sip.wrapinstance(
            self.qtgui_const_sink_x_0.pyqwidget(), Qt.QWidget)
        self.top_grid_layout.addWidget(self._qtgui_const_sink_x_0_win)
        self.pulse_shape_hier_0 = pulse_shape_hier(
            bFilter=bFilter,
            rect_taps=(1, 1, 1, 1),
            roll_off=rolloff_,
            sps=sps,
        )
        self.iio_pluto_source_0 = iio.pluto_source('', int(fc),
                                                   int(samp_rate * 1e3),
                                                   20000000, buffer_size, True,
                                                   True, True, 'manual', 18,
                                                   '', True)
        self.iio_pluto_sink_0 = iio.pluto_sink('', int(fc),
                                               int(samp_rate * 1e3), 20000000,
                                               buffer_size, False, 10.0, '',
                                               True)
        self.digital_pfb_clock_sync_xxx_0 = digital.pfb_clock_sync_ccf(
            sps, 2 * pi / 200, pfb_filter, nfilts_pfb, int(nfilts_pfb / 2),
            0.5, 1)
        self.digital_packet_headerparser_b_0_0 = digital.packet_headerparser_b(
            header_formatter.formatter())
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            header_len, 1, 0, "packet_length", "corr_est", False,
            gr.sizeof_gr_complex, "rx_time", 1, (), 0)
        self.digital_glfsr_source_x_0 = digital.glfsr_source_b(
            int(pn_order), True, 0, 1)
        self.digital_diff_decoder_bb_0_0 = digital.diff_decoder_bb(2)
        self.digital_diff_decoder_bb_0 = digital.diff_decoder_bb(2)
        self.digital_costas_loop_cc_0 = digital.costas_loop_cc(
            2 * pi / 200, 2, False)
        self.digital_corr_est_cc_0 = digital.corr_est_cc(
            pn6_padded, 1, 64, 0.7, digital.THRESHOLD_ABSOLUTE)
        self.digital_constellation_decoder_cb_0_0_0_0_0 = digital.constellation_decoder_cb(
            const)
        self.digital_constellation_decoder_cb_0_0_0_0 = digital.constellation_decoder_cb(
            const)
        self.blocks_add_xx_0 = blocks.add_vcc(1)
        self.analog_noise_source_x_0 = analog.noise_source_c(
            analog.GR_GAUSSIAN,
            np.sqrt(2) * np.sqrt(0.5 / np.power(10, snr_db / 10)), 0)
        self.analog_agc_xx_0 = analog.agc_cc(agc_rate, 1.0, 1.0)
        self.analog_agc_xx_0.set_max_gain(65536)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect(
            (self.digital_packet_headerparser_b_0_0, 'header_data'),
            (self.digital_header_payload_demux_0, 'header_data'))
        self.connect((self.analog_agc_xx_0, 0),
                     (self.digital_costas_loop_cc_0, 0))
        self.connect((self.analog_noise_source_x_0, 0),
                     (self.blocks_add_xx_0, 0))
        self.connect((self.blocks_add_xx_0, 0),
                     (self.digital_constellation_decoder_cb_0_0_0_0_0, 0))
        self.connect((self.blocks_add_xx_0, 0), (self.qtgui_const_sink_x_0, 0))
        self.connect((self.blocks_add_xx_0, 0), (self.qtgui_const_sink_x_0, 1))
        self.connect((self.digital_constellation_decoder_cb_0_0_0_0, 0),
                     (self.digital_diff_decoder_bb_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0_0_0_0_0, 0),
                     (self.digital_diff_decoder_bb_0_0, 0))
        self.connect((self.digital_corr_est_cc_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.digital_costas_loop_cc_0, 0),
                     (self.digital_pfb_clock_sync_xxx_0, 0))
        self.connect((self.digital_diff_decoder_bb_0, 0),
                     (self.digital_packet_headerparser_b_0_0, 0))
        self.connect((self.digital_diff_decoder_bb_0_0, 0),
                     (self.wes_ber_0, 0))
        self.connect((self.digital_glfsr_source_x_0, 0), (self.wes_ber_0, 1))
        self.connect((self.digital_glfsr_source_x_0, 0),
                     (self.wes_packet_tx_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.blocks_add_xx_0, 1))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.digital_constellation_decoder_cb_0_0_0_0, 0))
        self.connect((self.digital_pfb_clock_sync_xxx_0, 0),
                     (self.digital_corr_est_cc_0, 0))
        self.connect((self.iio_pluto_source_0, 0), (self.analog_agc_xx_0, 0))
        self.connect((self.pulse_shape_hier_0, 0), (self.iio_pluto_sink_0, 0))
        self.connect((self.wes_ber_0, 0), (self.qtgui_number_sink_0, 0))
        self.connect((self.wes_ber_0, 1), (self.qtgui_number_sink_0_0, 0))
        self.connect((self.wes_packet_tx_0, 0), (self.pulse_shape_hier_0, 0))
 def test_003_ofdm(self):
     """ Header 1: 193 bytes
     Header 2: 8 bytes
     2 bits per complex symbol, 32 carriers => 64 bits = 8 bytes per OFDM symbol
                                 4 carriers =>  8 bits = 1 byte  per OFDM symbol
                                 8 carriers => 16 bits = 2 bytes per OFDM symbol
     Means we need 52 carriers to store the 193 bytes.
     """
     encoded_headers = (
         #   | Number of bytes                    | Packet number                      | CRC
         1,
         0,
         0,
         0,
         0,
         0,
         1,
         1,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         1,
         0,
         1,
         1,
         0,
         1,
         1,
         0,
         0,
         0,
         0,
         1,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         1,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         1,
         0,
         1,
         1,
         1,
         0,
     )
     packet_len_tagname = "packet_len"
     frame_len_tagname = "frame_len"
     src = blocks.vector_source_b(encoded_headers)
     header_formatter = digital.packet_header_ofdm(
         # 32/4/8 carriers are occupied (which doesn't matter here)
         (list(range(32)), list(range(4)), list(range(8))),
         1,  # 1 OFDM symbol per header (= 32 bits)
         packet_len_tagname,
         frame_len_tagname,
         "packet_num",
         1,  # 1 bit per header symbols (BPSK)
         2  # 2 bits per payload symbol (QPSK)
     )
     parser = digital.packet_headerparser_b(header_formatter.base())
     sink = blocks.message_debug()
     self.tb.connect(src, parser)
     self.tb.msg_connect(parser, "header_data", sink, "store")
     self.tb.start()
     time.sleep(1)
     self.tb.stop()
     self.tb.wait()
     self.assertEqual(sink.num_messages(), 2)
     msg1 = pmt.to_python(sink.get_message(0))
     msg2 = pmt.to_python(sink.get_message(1))
     # Multiply with 4 because unpacked bytes have only two bits
     self.assertEqual(msg1, {
         'packet_len': 193 * 4,
         'frame_len': 52,
         'packet_num': 0
     })
     self.assertEqual(msg2, {
         'packet_len': 8 * 4,
         'frame_len': 1,
         'packet_num': 1
     })
Example #36
0
    def __init__(self, fD=10, id_user=0):
        gr.top_block.__init__(self, "Polar Coding with Coded Caching")

        ##################################################
        # Parameters
        ##################################################
        self.fD = fD
        self.id_user = id_user

        ##################################################
        # Variables
        ##################################################
        self.snr = snr = 14 + 20 * numpy.log10(4)
        self.pilot_symbols = pilot_symbols = ((
            1,
            1,
            1,
            -1,
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -21,
            -7,
            7,
            21,
        ), )
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) +
            range(8, 21) + range(22, 27), )
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.variance = variance = 1 / pow(10, snr / 10.0)
        self.sync_word2 = sync_word2 = [
            0, 0, 0, 0, 0, 0, -1, -1, -1, -1, 1, 1, -1, -1, -1, 1, -1, 1, 1, 1,
            1, 1, -1, -1, -1, -1, -1, 1, -1, -1, 1, -1, 0, 1, -1, 1, 1, 1, -1,
            1, 1, 1, -1, 1, 1, 1, 1, -1, 1, -1, -1, -1, 1, -1, 1, -1, -1, -1,
            -1, 0, 0, 0, 0, 0
        ]
        self.sync_word1 = sync_word1 = [
            0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
            -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            0., 0., 0., 0., 0.
        ]
        self.small_packet_len = small_packet_len = 52
        self.samp_rate = samp_rate = int(1e6)
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 0, 1)
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 0, 1)
        self.gain = gain = 25
        self.freq = freq = 2450e6
        self.coderate = coderate = [1, 2, 2, 3, 4]
        self.Users = Users = 4
        self.Nbfiles = Nbfiles = 20
        self.NbStrgUsers = NbStrgUsers = 1
        self.NbChuncks = NbChuncks = 200
        self.N = N = 2048

        ##################################################
        # Blocks
        ##################################################
        self.zeromq_sub_source_0 = zeromq.sub_source(gr.sizeof_gr_complex, 1,
                                                     'tcp://localhost:5565',
                                                     100, False, -1)
        self.zeromq_sub_msg_source_0_0_0 = zeromq.sub_msg_source(
            'tcp://localhost:5575', 10)
        self.zeromq_sub_msg_source_0_0 = zeromq.sub_msg_source(
            'tcp://localhost:5555', 10)
        self.projectCACHE_ofdm_frame_equalizer1_vcvc_0 = projectCACHE.ofdm_frame_equalizer1_vcvc(
            fft_len, fft_len / 4, length_tag_key, True, occupied_carriers,
            pilot_carriers, pilot_symbols, 0, True)
        self.projectCACHE_PolarDec_b_0_0 = projectCACHE.PolarDec_b(
            N, Nbfiles, NbChuncks, id_user, Users, small_packet_len, 42,
            coderate[id_user], packet_length_tag_key)
        self.projectCACHE_PC_Error_Rate_0_0 = projectCACHE.PC_Error_Rate(
            id_user, 200)
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_probe_mpsk_snr_est_c_0 = digital.probe_mpsk_snr_est_c(
            3, 1000, 0.0001)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len / 4, False, 0.9)
        self.digital_ofdm_serializer_vcc_payload_0 = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, '', True)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, '', True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, '', 0, '', True)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len / 4, length_tag_key, True, 1)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(
            (sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3,
            fft_len,
            fft_len / 4,
            length_tag_key,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            samp_rate,
            (),
            0,
        )
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                           fft_len + fft_len / 4)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'),
                         (self.digital_header_payload_demux_0, 'header_data'))
        self.msg_connect((self.digital_probe_mpsk_snr_est_c_0, 'snr'),
                         (self.projectCACHE_PC_Error_Rate_0_0, 'SNR'))
        self.msg_connect((self.zeromq_sub_msg_source_0_0, 'out'),
                         (self.projectCACHE_PC_Error_Rate_0_0, 'BER_INFO'))
        self.msg_connect((self.zeromq_sub_msg_source_0_0_0, 'out'),
                         (self.projectCACHE_PC_Error_Rate_0_0, 'CH_USE'))
        self.connect((self.analog_frequency_modulator_fc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.fft_vxx_1, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.projectCACHE_PolarDec_b_0_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload_0, 0),
                     (self.digital_probe_mpsk_snr_est_c_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0),
                     (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1),
                     (self.digital_header_payload_demux_0, 1))
        self.connect((self.fft_vxx_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.digital_ofdm_serializer_vcc_payload_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.projectCACHE_ofdm_frame_equalizer1_vcvc_0, 0))
        self.connect((self.projectCACHE_ofdm_frame_equalizer1_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.zeromq_sub_source_0, 0), (self.blocks_delay_0, 0))
        self.connect((self.zeromq_sub_source_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_0, 0))
Example #37
0
    def __init__(self):
        gr.top_block.__init__(self, "OFDM Transceiver")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("OFDM Transceiver")
        qtgui.util.check_set_qss()
        try:
            self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
        except:
            pass
        self.top_scroll_layout = Qt.QVBoxLayout()
        self.setLayout(self.top_scroll_layout)
        self.top_scroll = Qt.QScrollArea()
        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
        self.top_scroll_layout.addWidget(self.top_scroll)
        self.top_scroll.setWidgetResizable(True)
        self.top_widget = Qt.QWidget()
        self.top_scroll.setWidget(self.top_widget)
        self.top_layout = Qt.QVBoxLayout(self.top_widget)
        self.top_grid_layout = Qt.QGridLayout()
        self.top_layout.addLayout(self.top_grid_layout)

        self.settings = Qt.QSettings("GNU Radio", "rx_ofdm")

        try:
            if StrictVersion(Qt.qVersion()) < StrictVersion("5.0.0"):
                self.restoreGeometry(
                    self.settings.value("geometry").toByteArray())
            else:
                self.restoreGeometry(self.settings.value("geometry"))
        except:
            pass

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((
            1,
            1,
            1,
            -1,
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -21,
            -7,
            7,
            21,
        ), )
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            list(range(-26, -21)) + list(range(-20, -7)) + list(range(-6, 0)) +
            list(range(1, 7)) + list(range(8, 21)) + list(range(22, 27)), )
        self.num_syms = num_syms = 1
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.tx_amp = tx_amp = 0.034
        self.sync_word2 = sync_word2 = [
            0j, 0j, 0j, 0j, 0j, 0j, (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (1 + 0j), (-1 + 0j), 0j, (1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j),
            (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            0j, 0j, 0j, 0j, 0j
        ]
        self.sync_word1 = sync_word1 = [
            0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
            -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            0., 0., 0., 0., 0.
        ]
        self.sc_select = sc_select = 0
        self.samp_rate = samp_rate = 1e6
        self.rx_gain = rx_gain = 30
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_static(
            fft_len, occupied_carriers, pilot_carriers, pilot_symbols, 0, True)
        self.packet_len = packet_len = int(96 / 8 * num_syms)
        self.offset = offset = 8
        self.mp_gain = mp_gain = 0
        self.mp_delay = mp_delay = 0
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_static(
            fft_len, occupied_carriers, pilot_carriers, pilot_symbols, 0, True)
        self.freqc = freqc = 900e6
        self.cp_delay = cp_delay = 0

        ##################################################
        # Blocks
        ##################################################
        self._tx_amp_range = Range(0.001, 0.1, .001, 0.034, 200)
        self._tx_amp_win = RangeWidget(self._tx_amp_range, self.set_tx_amp,
                                       'TX Amplitude', "counter_slider", float)
        self.top_grid_layout.addWidget(self._tx_amp_win, 1, 0, 1, 8)
        for r in range(1, 2):
            self.top_grid_layout.setRowStretch(r, 1)
        for c in range(0, 8):
            self.top_grid_layout.setColumnStretch(c, 1)
        self.tab_const = Qt.QTabWidget()
        self.tab_const_widget_0 = Qt.QWidget()
        self.tab_const_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
                                                self.tab_const_widget_0)
        self.tab_const_grid_layout_0 = Qt.QGridLayout()
        self.tab_const_layout_0.addLayout(self.tab_const_grid_layout_0)
        self.tab_const.addTab(self.tab_const_widget_0,
                              'Pre-Equalization (Single-Subcarrier)')
        self.tab_const_widget_1 = Qt.QWidget()
        self.tab_const_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
                                                self.tab_const_widget_1)
        self.tab_const_grid_layout_1 = Qt.QGridLayout()
        self.tab_const_layout_1.addLayout(self.tab_const_grid_layout_1)
        self.tab_const.addTab(self.tab_const_widget_1,
                              'Pre-Equalization (All Subcarriers)')
        self.tab_const_widget_2 = Qt.QWidget()
        self.tab_const_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
                                                self.tab_const_widget_2)
        self.tab_const_grid_layout_2 = Qt.QGridLayout()
        self.tab_const_layout_2.addLayout(self.tab_const_grid_layout_2)
        self.tab_const.addTab(self.tab_const_widget_2,
                              'Post-Equalization (All Subcarriers)')
        self.top_grid_layout.addWidget(self.tab_const, 2, 0, 8, 4)
        for r in range(2, 10):
            self.top_grid_layout.setRowStretch(r, 1)
        for c in range(0, 4):
            self.top_grid_layout.setColumnStretch(c, 1)
        self._sc_select_range = Range(0, fft_len - 1, 1, 0, 200)
        self._sc_select_win = RangeWidget(self._sc_select_range,
                                          self.set_sc_select,
                                          'Sub Carrier Select',
                                          "counter_slider", float)
        self.top_grid_layout.addWidget(self._sc_select_win, 12, 0, 1, 4)
        for r in range(12, 13):
            self.top_grid_layout.setRowStretch(r, 1)
        for c in range(0, 4):
            self.top_grid_layout.setColumnStretch(c, 1)
        self._rx_gain_range = Range(0, 64, 1, 30, 200)
        self._rx_gain_win = RangeWidget(self._rx_gain_range, self.set_rx_gain,
                                        'RX Gain', "counter_slider", float)
        self.top_grid_layout.addWidget(self._rx_gain_win, 0, 0, 1, 8)
        for r in range(0, 1):
            self.top_grid_layout.setRowStretch(r, 1)
        for c in range(0, 8):
            self.top_grid_layout.setColumnStretch(c, 1)
        self._mp_gain_range = Range(0, 1, 0.001, 0, 200)
        self._mp_gain_win = RangeWidget(self._mp_gain_range, self.set_mp_gain,
                                        'Multipath Gain', "counter_slider",
                                        float)
        self.top_grid_layout.addWidget(self._mp_gain_win, 13, 0, 1, 4)
        for r in range(13, 14):
            self.top_grid_layout.setRowStretch(r, 1)
        for c in range(0, 4):
            self.top_grid_layout.setColumnStretch(c, 1)
        self._mp_delay_range = Range(0, 32, 1, 0, 200)
        self._mp_delay_win = RangeWidget(self._mp_delay_range,
                                         self.set_mp_delay,
                                         'Multipath Delay (Samples)',
                                         "counter_slider", float)
        self.top_grid_layout.addWidget(self._mp_delay_win, 13, 4, 1, 4)
        for r in range(13, 14):
            self.top_grid_layout.setRowStretch(r, 1)
        for c in range(4, 8):
            self.top_grid_layout.setColumnStretch(c, 1)
        self._cp_delay_range = Range(0, 3, 1, 0, 200)
        self._cp_delay_win = RangeWidget(self._cp_delay_range,
                                         self.set_cp_delay,
                                         'CP Delay (samples)',
                                         "counter_slider", float)
        self.top_grid_layout.addWidget(self._cp_delay_win, 12, 4, 1, 4)
        for r in range(12, 13):
            self.top_grid_layout.setRowStretch(r, 1)
        for c in range(4, 8):
            self.top_grid_layout.setColumnStretch(c, 1)
        self.qtgui_freq_sink_x_0 = qtgui.freq_sink_c(
            fft_len,  #size
            firdes.WIN_BLACKMAN_hARRIS,  #wintype
            0,  #fc
            samp_rate,  #bw
            "Channel Response",  #name
            1)
        self.qtgui_freq_sink_x_0.set_update_time(0.10)
        self.qtgui_freq_sink_x_0.set_y_axis(-100, 0)
        self.qtgui_freq_sink_x_0.set_y_label('Relative Gain', 'dB')
        self.qtgui_freq_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0,
                                                  "")
        self.qtgui_freq_sink_x_0.enable_autoscale(False)
        self.qtgui_freq_sink_x_0.enable_grid(True)
        self.qtgui_freq_sink_x_0.set_fft_average(0.1)
        self.qtgui_freq_sink_x_0.enable_axis_labels(True)
        self.qtgui_freq_sink_x_0.enable_control_panel(True)

        labels = ['', '', '', '', '', '', '', '', '', '']
        widths = [2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        colors = [
            "blue", "red", "green", "black", "cyan", "magenta", "yellow",
            "dark red", "dark green", "dark blue"
        ]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]

        for i in range(1):
            if len(labels[i]) == 0:
                self.qtgui_freq_sink_x_0.set_line_label(
                    i, "Data {0}".format(i))
            else:
                self.qtgui_freq_sink_x_0.set_line_label(i, labels[i])
            self.qtgui_freq_sink_x_0.set_line_width(i, widths[i])
            self.qtgui_freq_sink_x_0.set_line_color(i, colors[i])
            self.qtgui_freq_sink_x_0.set_line_alpha(i, alphas[i])

        self._qtgui_freq_sink_x_0_win = sip.wrapinstance(
            self.qtgui_freq_sink_x_0.pyqwidget(), Qt.QWidget)
        self.top_grid_layout.addWidget(self._qtgui_freq_sink_x_0_win, 2, 4, 8,
                                       4)
        for r in range(2, 10):
            self.top_grid_layout.setRowStretch(r, 1)
        for c in range(4, 8):
            self.top_grid_layout.setColumnStretch(c, 1)
        self.qtgui_const_sink_x_0_1 = qtgui.const_sink_c(
            1024,  #size
            "",  #name
            1  #number of inputs
        )
        self.qtgui_const_sink_x_0_1.set_update_time(0.10)
        self.qtgui_const_sink_x_0_1.set_y_axis(-2.5, 2.5)
        self.qtgui_const_sink_x_0_1.set_x_axis(-2.5, 2.5)
        self.qtgui_const_sink_x_0_1.set_trigger_mode(qtgui.TRIG_MODE_FREE,
                                                     qtgui.TRIG_SLOPE_POS, 0.0,
                                                     0, "")
        self.qtgui_const_sink_x_0_1.enable_autoscale(False)
        self.qtgui_const_sink_x_0_1.enable_grid(True)
        self.qtgui_const_sink_x_0_1.enable_axis_labels(True)

        labels = ['', '', '', '', '', '', '', '', '', '']
        widths = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        colors = [
            "blue", "red", "red", "red", "red", "red", "red", "red", "red",
            "red"
        ]
        styles = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
        markers = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]

        for i in range(1):
            if len(labels[i]) == 0:
                self.qtgui_const_sink_x_0_1.set_line_label(
                    i, "Data {0}".format(i))
            else:
                self.qtgui_const_sink_x_0_1.set_line_label(i, labels[i])
            self.qtgui_const_sink_x_0_1.set_line_width(i, widths[i])
            self.qtgui_const_sink_x_0_1.set_line_color(i, colors[i])
            self.qtgui_const_sink_x_0_1.set_line_style(i, styles[i])
            self.qtgui_const_sink_x_0_1.set_line_marker(i, markers[i])
            self.qtgui_const_sink_x_0_1.set_line_alpha(i, alphas[i])

        self._qtgui_const_sink_x_0_1_win = sip.wrapinstance(
            self.qtgui_const_sink_x_0_1.pyqwidget(), Qt.QWidget)
        self.tab_const_layout_1.addWidget(self._qtgui_const_sink_x_0_1_win)
        self.qtgui_const_sink_x_0_0 = qtgui.const_sink_c(
            1024,  #size
            "",  #name
            1  #number of inputs
        )
        self.qtgui_const_sink_x_0_0.set_update_time(0.10)
        self.qtgui_const_sink_x_0_0.set_y_axis(-2.5, 2.5)
        self.qtgui_const_sink_x_0_0.set_x_axis(-2.5, 2.5)
        self.qtgui_const_sink_x_0_0.set_trigger_mode(qtgui.TRIG_MODE_FREE,
                                                     qtgui.TRIG_SLOPE_POS, 0.0,
                                                     0, '')
        self.qtgui_const_sink_x_0_0.enable_autoscale(False)
        self.qtgui_const_sink_x_0_0.enable_grid(True)
        self.qtgui_const_sink_x_0_0.enable_axis_labels(True)

        labels = ['', '', '', '', '', '', '', '', '', '']
        widths = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        colors = [
            "blue", "red", "red", "red", "red", "red", "red", "red", "red",
            "red"
        ]
        styles = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
        markers = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]

        for i in range(1):
            if len(labels[i]) == 0:
                self.qtgui_const_sink_x_0_0.set_line_label(
                    i, "Data {0}".format(i))
            else:
                self.qtgui_const_sink_x_0_0.set_line_label(i, labels[i])
            self.qtgui_const_sink_x_0_0.set_line_width(i, widths[i])
            self.qtgui_const_sink_x_0_0.set_line_color(i, colors[i])
            self.qtgui_const_sink_x_0_0.set_line_style(i, styles[i])
            self.qtgui_const_sink_x_0_0.set_line_marker(i, markers[i])
            self.qtgui_const_sink_x_0_0.set_line_alpha(i, alphas[i])

        self._qtgui_const_sink_x_0_0_win = sip.wrapinstance(
            self.qtgui_const_sink_x_0_0.pyqwidget(), Qt.QWidget)
        self.tab_const_layout_0.addWidget(self._qtgui_const_sink_x_0_0_win)
        self.qtgui_const_sink_x_0 = qtgui.const_sink_c(
            1024,  #size
            "",  #name
            1  #number of inputs
        )
        self.qtgui_const_sink_x_0.set_update_time(0.10)
        self.qtgui_const_sink_x_0.set_y_axis(-2.5, 2.5)
        self.qtgui_const_sink_x_0.set_x_axis(-2.5, 2.5)
        self.qtgui_const_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE,
                                                   qtgui.TRIG_SLOPE_POS, 0.0,
                                                   0, "")
        self.qtgui_const_sink_x_0.enable_autoscale(False)
        self.qtgui_const_sink_x_0.enable_grid(True)
        self.qtgui_const_sink_x_0.enable_axis_labels(True)

        labels = ['', '', '', '', '', '', '', '', '', '']
        widths = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        colors = [
            "blue", "red", "red", "red", "red", "red", "red", "red", "red",
            "red"
        ]
        styles = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
        markers = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]

        for i in range(1):
            if len(labels[i]) == 0:
                self.qtgui_const_sink_x_0.set_line_label(
                    i, "Data {0}".format(i))
            else:
                self.qtgui_const_sink_x_0.set_line_label(i, labels[i])
            self.qtgui_const_sink_x_0.set_line_width(i, widths[i])
            self.qtgui_const_sink_x_0.set_line_color(i, colors[i])
            self.qtgui_const_sink_x_0.set_line_style(i, styles[i])
            self.qtgui_const_sink_x_0.set_line_marker(i, markers[i])
            self.qtgui_const_sink_x_0.set_line_alpha(i, alphas[i])

        self._qtgui_const_sink_x_0_win = sip.wrapinstance(
            self.qtgui_const_sink_x_0.pyqwidget(), Qt.QWidget)
        self.tab_const_layout_2.addWidget(self._qtgui_const_sink_x_0_win)
        self._num_syms_range = Range(1, 20, 1, 1, 200)
        self._num_syms_win = RangeWidget(self._num_syms_range,
                                         self.set_num_syms,
                                         '# of Symbols per Pkt',
                                         "counter_slider", float)
        self.top_grid_layout.addWidget(self._num_syms_win, 11, 0, 1, 8)
        for r in range(11, 12):
            self.top_grid_layout.setRowStretch(r, 1)
        for c in range(0, 8):
            self.top_grid_layout.setColumnStretch(c, 1)
        self.iio_pluto_source_0 = iio.pluto_source('usb:1.4.5', int(freqc),
                                                   int(samp_rate), 20000000,
                                                   32768, True, True, True,
                                                   'manual', rx_gain, '', True)
        self.iio_pluto_sink_0 = iio.pluto_sink('usb:1.3.5', int(freqc),
                                               int(samp_rate), 20000000, 32768,
                                               False, 10.0, '', True)
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_ofdm_tx_0 = digital.ofdm_tx(
            fft_len=fft_len,
            cp_len=fft_len // 4,
            packet_length_tag_key=packet_length_tag_key,
            occupied_carriers=occupied_carriers,
            pilot_carriers=pilot_carriers,
            pilot_symbols=pilot_symbols,
            sync_word1=sync_word1,
            sync_word2=sync_word2,
            bps_header=1,
            bps_payload=2,
            rolloff=0,
            debug_log=False,
            scramble_bits=False)
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len // 4, False, 0.9)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, '', True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, '', 0, '', True)
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len // 4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len // 4, length_tag_key, True, 1)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(
            sync_word1, sync_word2, 1, 0, 3, False)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3, fft_len, fft_len // 4, length_tag_key, "", True,
            gr.sizeof_gr_complex, "rx_time", int(samp_rate), (), 0)
        self.digital_crc32_bb_0 = digital.crc32_bb(True, packet_length_tag_key,
                                                   True)
        self.digital_constellation_decoder_cb_1 = digital.constellation_decoder_cb(
            payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.blocks_vector_to_stream_0_0_1 = blocks.vector_to_stream(
            gr.sizeof_gr_complex * 1, 64)
        self.blocks_vector_to_stream_0_0 = blocks.vector_to_stream(
            gr.sizeof_gr_complex * 1, 64)
        self.blocks_tag_debug_1 = blocks.tag_debug(gr.sizeof_char * 1,
                                                   'Rx Bytes', "")
        self.blocks_tag_debug_1.set_display(False)
        self.blocks_stream_to_vector_0 = blocks.stream_to_vector(
            gr.sizeof_gr_complex * 1, 64)
        self.blocks_stream_to_tagged_stream_0 = blocks.stream_to_tagged_stream(
            gr.sizeof_char, 1, packet_len, packet_length_tag_key)
        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True,
            gr.GR_LSB_FIRST)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_multiply_const_vxx_1 = blocks.multiply_const_cc(mp_gain)
        self.blocks_multiply_const_vxx_0 = blocks.multiply_const_cc(tx_amp)
        self.blocks_keep_m_in_n_0 = blocks.keep_m_in_n(gr.sizeof_gr_complex, 1,
                                                       fft_len, sc_select)
        self.blocks_delay_2 = blocks.delay(gr.sizeof_gr_complex * 1, mp_delay)
        self.blocks_delay_1 = blocks.delay(gr.sizeof_gr_complex * 1, cp_delay)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                           fft_len + fft_len // 4)
        self.blocks_add_xx_0 = blocks.add_vcc(1)
        self.analog_random_source_x_0 = blocks.vector_source_b(
            list(map(int, numpy.random.randint(0, 255, 1000))), True)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'),
                         (self.digital_header_payload_demux_0, 'header_data'))
        self.connect((self.analog_frequency_modulator_fc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.analog_random_source_x_0, 0),
                     (self.blocks_stream_to_tagged_stream_0, 0))
        self.connect((self.blocks_add_xx_0, 0), (self.blocks_delay_0, 0))
        self.connect((self.blocks_add_xx_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_delay_1, 0),
                     (self.blocks_stream_to_vector_0, 0))
        self.connect((self.blocks_delay_2, 0),
                     (self.blocks_multiply_const_vxx_1, 0))
        self.connect((self.blocks_keep_m_in_n_0, 0),
                     (self.qtgui_const_sink_x_0_0, 0))
        self.connect((self.blocks_multiply_const_vxx_0, 0),
                     (self.iio_pluto_sink_0, 0))
        self.connect((self.blocks_multiply_const_vxx_1, 0),
                     (self.blocks_add_xx_0, 1))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0),
                     (self.digital_crc32_bb_0, 0))
        self.connect((self.blocks_stream_to_tagged_stream_0, 0),
                     (self.digital_ofdm_tx_0, 0))
        self.connect((self.blocks_stream_to_vector_0, 0), (self.fft_vxx_1, 0))
        self.connect((self.blocks_vector_to_stream_0_0, 0),
                     (self.blocks_delay_1, 0))
        self.connect((self.blocks_vector_to_stream_0_0, 0),
                     (self.qtgui_freq_sink_x_0, 0))
        self.connect((self.blocks_vector_to_stream_0_0_1, 0),
                     (self.blocks_keep_m_in_n_0, 0))
        self.connect((self.blocks_vector_to_stream_0_0_1, 0),
                     (self.qtgui_const_sink_x_0_1, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1, 0),
                     (self.blocks_repack_bits_bb_0, 0))
        self.connect((self.digital_crc32_bb_0, 0),
                     (self.blocks_tag_debug_1, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.blocks_vector_to_stream_0_0, 0))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0),
                     (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.digital_constellation_decoder_cb_1, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.qtgui_const_sink_x_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0),
                     (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1),
                     (self.digital_header_payload_demux_0, 1))
        self.connect((self.digital_ofdm_tx_0, 0),
                     (self.blocks_multiply_const_vxx_0, 0))
        self.connect((self.fft_vxx_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.blocks_vector_to_stream_0_0_1, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
        self.connect((self.iio_pluto_source_0, 0), (self.blocks_add_xx_0, 0))
        self.connect((self.iio_pluto_source_0, 0), (self.blocks_delay_2, 0))
 def test_001_t(self):
     """
     First header: Packet length 4, packet num 0
     Second header: Packet 2, packet num 1
     Third header: Invalid (CRC does not check) (would be len 4, num 2)
     """
     encoded_headers = (
         #   | Number of bytes                    | Packet number                      | CRC
         0,
         0,
         1,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         1,
         0,
         0,
         1,
         0,
         0,
         0,
         1,
         0,
         1,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         1,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         1,
         0,
         1,
         1,
         1,
         0,
         0,
         1,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         1,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         0,
         1,
         1,
         1,
         1,
         1,
         1,
         1,
         1)
     packet_len_tagname = "packet_len"
     random_tag = gr.tag_t()
     random_tag.offset = 5
     random_tag.key = pmt.string_to_symbol("foo")
     random_tag.value = pmt.from_long(42)
     src = blocks.vector_source_b(encoded_headers, tags=(random_tag, ))
     parser = digital.packet_headerparser_b(32, packet_len_tagname)
     sink = blocks.message_debug()
     self.tb.connect(src, parser)
     self.tb.msg_connect(parser, "header_data", sink, "store")
     self.tb.start()
     time.sleep(1)
     self.tb.stop()
     self.tb.wait()
     self.assertEqual(sink.num_messages(), 3)
     msg1 = pmt.to_python(sink.get_message(0))
     msg2 = pmt.to_python(sink.get_message(1))
     msg3 = pmt.to_python(sink.get_message(2))
     self.assertEqual(msg1, {'packet_len': 4, 'packet_num': 0, 'foo': 42})
     self.assertEqual(msg2, {'packet_len': 2, 'packet_num': 1})
     self.assertEqual(msg3, False)
Example #39
0
    def __init__(self):
        gr.top_block.__init__(self, "OFDM Rx")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("OFDM Rx")
        qtgui.util.check_set_qss()
        try:
            self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
        except:
            pass
        self.top_scroll_layout = Qt.QVBoxLayout()
        self.setLayout(self.top_scroll_layout)
        self.top_scroll = Qt.QScrollArea()
        self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
        self.top_scroll_layout.addWidget(self.top_scroll)
        self.top_scroll.setWidgetResizable(True)
        self.top_widget = Qt.QWidget()
        self.top_scroll.setWidget(self.top_widget)
        self.top_layout = Qt.QVBoxLayout(self.top_widget)
        self.top_grid_layout = Qt.QGridLayout()
        self.top_layout.addLayout(self.top_grid_layout)

        self.settings = Qt.QSettings("GNU Radio", "rx_ofdm")
        self.restoreGeometry(self.settings.value("geometry").toByteArray())

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((
            1,
            1,
            1,
            -1,
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -21,
            -7,
            7,
            21,
        ), )
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) +
            range(8, 21) + range(22, 27), )
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.sync_word2 = sync_word2 = [
            0j, 0j, 0j, 0j, 0j, 0j, (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (-1 + 0j), (1 + 0j), (-1 + 0j), 0j, (1 + 0j), (-1 + 0j),
            (1 + 0j), (1 + 0j), (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j),
            (1 + 0j), (-1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (1 + 0j),
            (-1 + 0j), (1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j), (-1 + 0j),
            0j, 0j, 0j, 0j, 0j
        ]
        self.sync_word1 = sync_word1 = [
            0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
            -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            0., 0., 0., 0., 0.
        ]
        self.samp_rate = samp_rate = 10000
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 1)
        self.packet_len = packet_len = 96
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols)

        ##################################################
        # Blocks
        ##################################################
        self.qtgui_waterfall_sink_x_0 = qtgui.waterfall_sink_c(
            1024,  #size
            firdes.WIN_BLACKMAN_hARRIS,  #wintype
            0,  #fc
            samp_rate,  #bw
            "",  #name
            1  #number of inputs
        )
        self.qtgui_waterfall_sink_x_0.set_update_time(0.10)
        self.qtgui_waterfall_sink_x_0.enable_grid(False)
        self.qtgui_waterfall_sink_x_0.enable_axis_labels(True)

        if not True:
            self.qtgui_waterfall_sink_x_0.disable_legend()

        if "complex" == "float" or "complex" == "msg_float":
            self.qtgui_waterfall_sink_x_0.set_plot_pos_half(not True)

        labels = ['', '', '', '', '', '', '', '', '', '']
        colors = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]
        for i in xrange(1):
            if len(labels[i]) == 0:
                self.qtgui_waterfall_sink_x_0.set_line_label(
                    i, "Data {0}".format(i))
            else:
                self.qtgui_waterfall_sink_x_0.set_line_label(i, labels[i])
            self.qtgui_waterfall_sink_x_0.set_color_map(i, colors[i])
            self.qtgui_waterfall_sink_x_0.set_line_alpha(i, alphas[i])

        self.qtgui_waterfall_sink_x_0.set_intensity_range(-140, 10)

        self._qtgui_waterfall_sink_x_0_win = sip.wrapinstance(
            self.qtgui_waterfall_sink_x_0.pyqwidget(), Qt.QWidget)
        self.top_layout.addWidget(self._qtgui_waterfall_sink_x_0_win)
        self.qtgui_time_sink_x_1 = qtgui.time_sink_f(
            20,  #size
            samp_rate,  #samp_rate
            "",  #name
            1  #number of inputs
        )
        self.qtgui_time_sink_x_1.set_update_time(0.10)
        self.qtgui_time_sink_x_1.set_y_axis(-1, 1)

        self.qtgui_time_sink_x_1.set_y_label('Amplitude', "")

        self.qtgui_time_sink_x_1.enable_tags(-1, True)
        self.qtgui_time_sink_x_1.set_trigger_mode(qtgui.TRIG_MODE_FREE,
                                                  qtgui.TRIG_SLOPE_POS, 0.0, 0,
                                                  0, "")
        self.qtgui_time_sink_x_1.enable_autoscale(True)
        self.qtgui_time_sink_x_1.enable_grid(False)
        self.qtgui_time_sink_x_1.enable_axis_labels(True)
        self.qtgui_time_sink_x_1.enable_control_panel(False)

        if not True:
            self.qtgui_time_sink_x_1.disable_legend()

        labels = ['', '', '', '', '', '', '', '', '', '']
        widths = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        colors = [
            "blue", "red", "green", "black", "cyan", "magenta", "yellow",
            "dark red", "dark green", "blue"
        ]
        styles = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        markers = [-1, -1, -1, -1, -1, -1, -1, -1, -1, -1]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]

        for i in xrange(1):
            if len(labels[i]) == 0:
                self.qtgui_time_sink_x_1.set_line_label(
                    i, "Data {0}".format(i))
            else:
                self.qtgui_time_sink_x_1.set_line_label(i, labels[i])
            self.qtgui_time_sink_x_1.set_line_width(i, widths[i])
            self.qtgui_time_sink_x_1.set_line_color(i, colors[i])
            self.qtgui_time_sink_x_1.set_line_style(i, styles[i])
            self.qtgui_time_sink_x_1.set_line_marker(i, markers[i])
            self.qtgui_time_sink_x_1.set_line_alpha(i, alphas[i])

        self._qtgui_time_sink_x_1_win = sip.wrapinstance(
            self.qtgui_time_sink_x_1.pyqwidget(), Qt.QWidget)
        self.top_layout.addWidget(self._qtgui_time_sink_x_1_win)
        self.qtgui_time_sink_x_0_0 = qtgui.time_sink_f(
            200,  #size
            samp_rate,  #samp_rate
            "",  #name
            1  #number of inputs
        )
        self.qtgui_time_sink_x_0_0.set_update_time(0.10)
        self.qtgui_time_sink_x_0_0.set_y_axis(-1, 2)

        self.qtgui_time_sink_x_0_0.set_y_label('Amplitude', "")

        self.qtgui_time_sink_x_0_0.enable_tags(-1, True)
        self.qtgui_time_sink_x_0_0.set_trigger_mode(qtgui.TRIG_MODE_FREE,
                                                    qtgui.TRIG_SLOPE_POS, 0.0,
                                                    0, 0, "")
        self.qtgui_time_sink_x_0_0.enable_autoscale(True)
        self.qtgui_time_sink_x_0_0.enable_grid(False)
        self.qtgui_time_sink_x_0_0.enable_axis_labels(True)
        self.qtgui_time_sink_x_0_0.enable_control_panel(False)

        if not True:
            self.qtgui_time_sink_x_0_0.disable_legend()

        labels = ['', '', '', '', '', '', '', '', '', '']
        widths = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        colors = [
            "blue", "red", "green", "black", "cyan", "magenta", "yellow",
            "dark red", "dark green", "blue"
        ]
        styles = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        markers = [-1, -1, -1, -1, -1, -1, -1, -1, -1, -1]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]

        for i in xrange(1):
            if len(labels[i]) == 0:
                self.qtgui_time_sink_x_0_0.set_line_label(
                    i, "Data {0}".format(i))
            else:
                self.qtgui_time_sink_x_0_0.set_line_label(i, labels[i])
            self.qtgui_time_sink_x_0_0.set_line_width(i, widths[i])
            self.qtgui_time_sink_x_0_0.set_line_color(i, colors[i])
            self.qtgui_time_sink_x_0_0.set_line_style(i, styles[i])
            self.qtgui_time_sink_x_0_0.set_line_marker(i, markers[i])
            self.qtgui_time_sink_x_0_0.set_line_alpha(i, alphas[i])

        self._qtgui_time_sink_x_0_0_win = sip.wrapinstance(
            self.qtgui_time_sink_x_0_0.pyqwidget(), Qt.QWidget)
        self.top_layout.addWidget(self._qtgui_time_sink_x_0_0_win)
        self.qtgui_time_sink_x_0 = qtgui.time_sink_f(
            200,  #size
            samp_rate,  #samp_rate
            "",  #name
            1  #number of inputs
        )
        self.qtgui_time_sink_x_0.set_update_time(0.10)
        self.qtgui_time_sink_x_0.set_y_axis(-1, 2)

        self.qtgui_time_sink_x_0.set_y_label('Amplitude', "")

        self.qtgui_time_sink_x_0.enable_tags(-1, True)
        self.qtgui_time_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE,
                                                  qtgui.TRIG_SLOPE_POS, 0.0, 0,
                                                  0, "")
        self.qtgui_time_sink_x_0.enable_autoscale(True)
        self.qtgui_time_sink_x_0.enable_grid(False)
        self.qtgui_time_sink_x_0.enable_axis_labels(True)
        self.qtgui_time_sink_x_0.enable_control_panel(False)

        if not True:
            self.qtgui_time_sink_x_0.disable_legend()

        labels = ['', '', '', '', '', '', '', '', '', '']
        widths = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        colors = [
            "blue", "red", "green", "black", "cyan", "magenta", "yellow",
            "dark red", "dark green", "blue"
        ]
        styles = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
        markers = [-1, -1, -1, -1, -1, -1, -1, -1, -1, -1]
        alphas = [1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0, 1.0]

        for i in xrange(1):
            if len(labels[i]) == 0:
                self.qtgui_time_sink_x_0.set_line_label(
                    i, "Data {0}".format(i))
            else:
                self.qtgui_time_sink_x_0.set_line_label(i, labels[i])
            self.qtgui_time_sink_x_0.set_line_width(i, widths[i])
            self.qtgui_time_sink_x_0.set_line_color(i, colors[i])
            self.qtgui_time_sink_x_0.set_line_style(i, styles[i])
            self.qtgui_time_sink_x_0.set_line_marker(i, markers[i])
            self.qtgui_time_sink_x_0.set_line_alpha(i, alphas[i])

        self._qtgui_time_sink_x_0_win = sip.wrapinstance(
            self.qtgui_time_sink_x_0.pyqwidget(), Qt.QWidget)
        self.top_layout.addWidget(self._qtgui_time_sink_x_0_win)
        self.meu_qpsk_demod_adapt_cb_0 = meu.qpsk_demod_adapt_cb()
        self.meu_phase_finder_vci_0 = meu.phase_finder_vci(
            fft_len / 4, fft_len)
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_ofdm_tx_0 = digital.ofdm_tx(
            fft_len=fft_len,
            cp_len=fft_len / 4,
            packet_length_tag_key=packet_length_tag_key,
            occupied_carriers=occupied_carriers,
            pilot_carriers=pilot_carriers,
            pilot_symbols=pilot_symbols,
            sync_word1=sync_word1,
            sync_word2=sync_word2,
            bps_header=1,
            bps_payload=2,
            rolloff=0,
            debug_log=True,
            scramble_bits=False)
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len / 4, False)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, '', True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, '', 0, '', True)
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len / 4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len / 4, length_tag_key, True, 1)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(
            (sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3,
            fft_len,
            fft_len / 4,
            length_tag_key,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            samp_rate,
            (),
            0,
        )
        self.digital_crc32_bb_0_0 = digital.crc32_bb(True,
                                                     packet_length_tag_key,
                                                     False)
        self.digital_crc32_bb_0 = digital.crc32_bb(True, packet_length_tag_key,
                                                   True)
        self.digital_constellation_decoder_cb_1 = digital.constellation_decoder_cb(
            payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.channels_channel_model_0 = channels.channel_model(
            noise_voltage=100e-12,
            frequency_offset=1,
            epsilon=1.0,
            taps=(1.0, ),
            noise_seed=0,
            block_tags=True)
        self.blocks_uchar_to_float_0_0 = blocks.uchar_to_float()
        self.blocks_uchar_to_float_0 = blocks.uchar_to_float()
        self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex * 1,
                                                 samp_rate, True)
        self.blocks_tag_debug_1 = blocks.tag_debug(gr.sizeof_char * 1,
                                                   'Rx Bytes', "")
        self.blocks_tag_debug_1.set_display(True)
        self.blocks_stream_to_tagged_stream_0 = blocks.stream_to_tagged_stream(
            gr.sizeof_char, 1, packet_len, packet_length_tag_key)
        self.blocks_repack_bits_bb_0_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True,
            gr.GR_LSB_FIRST)
        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True,
            gr.GR_LSB_FIRST)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_int_to_float_0 = blocks.int_to_float(1, 1)
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                           fft_len + fft_len / 4)
        self.analog_random_source_x_0 = blocks.vector_source_b(
            map(int, numpy.random.randint(0, 255, 1000)), True)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'),
                         (self.digital_header_payload_demux_0, 'header_data'))
        self.connect((self.analog_frequency_modulator_fc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.analog_random_source_x_0, 0),
                     (self.blocks_stream_to_tagged_stream_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_int_to_float_0, 0),
                     (self.qtgui_time_sink_x_1, 0))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0),
                     (self.digital_crc32_bb_0, 0))
        self.connect((self.blocks_repack_bits_bb_0_0, 0),
                     (self.blocks_uchar_to_float_0_0, 0))
        self.connect((self.blocks_repack_bits_bb_0_0, 0),
                     (self.digital_crc32_bb_0_0, 0))
        self.connect((self.blocks_stream_to_tagged_stream_0, 0),
                     (self.digital_ofdm_tx_0, 0))
        self.connect((self.blocks_throttle_0, 0), (self.blocks_delay_0, 0))
        self.connect((self.blocks_throttle_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_0, 0))
        self.connect((self.blocks_uchar_to_float_0, 0),
                     (self.qtgui_time_sink_x_0, 0))
        self.connect((self.blocks_uchar_to_float_0_0, 0),
                     (self.qtgui_time_sink_x_0_0, 0))
        self.connect((self.channels_channel_model_0, 0),
                     (self.blocks_throttle_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1, 0),
                     (self.blocks_repack_bits_bb_0, 0))
        self.connect((self.digital_crc32_bb_0, 0),
                     (self.blocks_uchar_to_float_0, 0))
        self.connect((self.digital_crc32_bb_0_0, 0),
                     (self.blocks_tag_debug_1, 0))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.fft_vxx_1, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.meu_phase_finder_vci_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0),
                     (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.digital_constellation_decoder_cb_1, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.meu_qpsk_demod_adapt_cb_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0),
                     (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1),
                     (self.digital_header_payload_demux_0, 1))
        self.connect((self.digital_ofdm_tx_0, 0),
                     (self.channels_channel_model_0, 0))
        self.connect((self.fft_vxx_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
        self.connect((self.meu_phase_finder_vci_0, 0),
                     (self.blocks_int_to_float_0, 0))
        self.connect((self.meu_phase_finder_vci_0, 0),
                     (self.meu_qpsk_demod_adapt_cb_0, 1))
        self.connect((self.meu_qpsk_demod_adapt_cb_0, 0),
                     (self.blocks_repack_bits_bb_0_0, 0))
Example #40
0
    def __init__(self):
        gr.top_block.__init__(self, "Send Test Rx")

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((1, 1, 1, -1,),)
        self.pilot_carriers = pilot_carriers = ((-21, -7, 7, 21,),)
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) + range(8, 21) + range(22, 27),)
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64
        self.sync_word2 = sync_word2 = [0j, 0j, 0j, 0j, 0j, 0j, (-1+0j), (-1+0j), (-1+0j), (-1+0j), (1+0j), (1+0j), (-1+0j), (-1+0j), (-1+0j), (1+0j), (-1+0j), (1+0j), (1+0j), (1 +0j), (1+0j), (1+0j), (-1+0j), (-1+0j), (-1+0j), (-1+0j), (-1+0j), (1+0j), (-1+0j), (-1+0j), (1+0j), (-1+0j), 0j, (1+0j), (-1+0j), (1+0j), (1+0j), (1+0j), (-1+0j), (1+0j), (1+0j), (1+0j), (-1+0j), (1+0j), (1+0j), (1+0j), (1+0j), (-1+0j), (1+0j), (-1+0j), (-1+0j), (-1+0j), (1+0j), (-1+0j), (1+0j), (-1+0j), (-1+0j), (-1+0j), (-1+0j), 0j, 0j, 0j, 0j, 0j]
        self.sync_word1 = sync_word1 = [0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 0., 0., 0., 0., 0.]
        self.samp_rate = samp_rate = 5000000
        self.rolloff = rolloff = 0
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(fft_len, payload_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols, 1)
        self.packet_len = packet_len = 96
        self.header_formatter = header_formatter = digital.packet_header_ofdm(occupied_carriers, n_syms=1, len_tag_key=packet_length_tag_key, frame_len_tag_key=length_tag_key, bits_per_header_sym=header_mod.bits_per_symbol(), bits_per_payload_sym=payload_mod.bits_per_symbol(), scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(fft_len, header_mod.base(), occupied_carriers, pilot_carriers, pilot_symbols)

        ##################################################
        # Blocks
        ##################################################
        self.uhd_usrp_source_0 = uhd.usrp_source(
        	",".join(("serial=30CEECB", "")),
        	uhd.stream_args(
        		cpu_format="fc32",
        		channels=range(1),
        	),
        )
        self.uhd_usrp_source_0.set_samp_rate(samp_rate)
        self.uhd_usrp_source_0.set_center_freq(2.492e9, 0)
        self.uhd_usrp_source_0.set_gain(40, 0)
        self.uhd_usrp_source_0.set_antenna("TX/RX", 0)
        self.pir_get_timestamp_delta_cm_0 = pir.get_timestamp_delta_cm()
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(header_formatter.base())
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(fft_len, fft_len/4, False)
        self.digital_ofdm_serializer_vcc_header_0 = digital.ofdm_serializer_vcc(fft_len, occupied_carriers, length_tag_key, "", 0, "", True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(fft_len, occupied_carriers, length_tag_key, "", 0, "", True)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(header_equalizer.base(), fft_len/4, length_tag_key, True, 1)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc((sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
        	  3,
        	  fft_len,
        	  fft_len/4,
        	  length_tag_key,
        	  "",
        	  True,
        	  gr.sizeof_gr_complex,
        	  "rx_time",
                  samp_rate,
                  (),
            )
        self.digital_corr_est_cc_0 = digital.corr_est_cc(((0.00000 - 0.00000j, -0.23756 + 0.06817j, 0.02455 - 0.06790j, -0.02923 + 0.05414j, 0.00701 - 0.10558j, 0.07080 - 0.00739j, 0.04334 + 0.00660j, -0.11691 + 0.08759j, 0.09375 + 0.06250j, 0.04313 - 0.10143j, 0.00862 - 0.03317j, -0.05702 + 0.07170j, -0.09857 - 0.09157j, 0.02654 + 0.03204j, -0.03675 - 0.04537j, 0.06443 + 0.17533j, 0.04419 + 0.00000j, 0.06443 - 0.17533j, -0.03675 + 0.04537j, 0.02654 - 0.03204j, -0.09857 + 0.09157j, -0.05702 - 0.07170j, 0.00862 + 0.03317j, 0.04313 + 0.10143j, 0.09375 - 0.06250j, -0.11691 - 0.08759j, 0.04334 - 0.00660j, 0.07080 + 0.00739j, 0.00701 + 0.10558j, -0.02923 - 0.05414j, 0.02455 + 0.06790j, -0.23756 - 0.06817j, 0.00000 + 0.00000j, 0.23756 - 0.06817j, -0.02455 + 0.06790j, 0.02923 - 0.05414j, -0.00701 + 0.10558j, -0.07080 + 0.00739j, -0.04334 - 0.00660j, 0.11691 - 0.08759j, -0.09375 - 0.06250j, -0.04313 + 0.10143j, -0.00862 + 0.03317j, 0.05702 - 0.07170j, 0.09857 + 0.09157j, -0.02654 - 0.03204j, 0.03675 + 0.04537j, -0.06443 - 0.17533j, -0.04419 + 0.00000j, -0.06443 + 0.17533j, 0.03675 - 0.04537j, -0.02654 + 0.03204j, 0.09857 - 0.09157j, 0.05702 + 0.07170j, -0.00862 - 0.03317j, -0.04313 - 0.10143j, -0.09375 + 0.06250j, 0.11691 + 0.08759j, -0.04334 + 0.00660j, -0.07080 - 0.00739j, -0.00701 - 0.10558j, 0.02923 + 0.05414j, -0.02455 - 0.06790j, 0.23756 + 0.06817j, 0.00000 - 0.00000j, -0.23756 + 0.06817j, 0.02455 - 0.06790j, -0.02923 + 0.05414j, 0.00701 - 0.10558j, 0.07080 - 0.00739j, 0.04334 + 0.00660j, -0.11691 + 0.08759j, 0.09375 + 0.06250j, 0.04313 - 0.10143j, 0.00862 - 0.03317j, -0.05702 + 0.07170j, -0.09857 - 0.09157j, 0.02654 + 0.03204j, -0.03675 - 0.04537j, 0.06443 + 0.17533j, 0.06250 + 0.03125j, -0.10790 - 0.08255j, 0.00182 + 0.03337j, 0.09586 - 0.07711j, 0.06872 + 0.05573j, 0.00373 + 0.04257j, -0.03565 - 0.03853j, -0.14193 + 0.01821j, -0.15089 - 0.03504j, 0.14492 - 0.01154j, 0.07984 + 0.05798j, -0.06544 - 0.02403j, 0.10927 - 0.05236j, 0.14303 + 0.12879j, -0.04601 - 0.13003j, -0.11594 + 0.05444j, -0.06250 + 0.00000j, -0.11594 - 0.05444j, -0.04601 + 0.13003j, 0.14303 - 0.12879j, 0.10927 + 0.05236j, -0.06544 + 0.02403j, 0.07984 - 0.05798j, 0.14492 + 0.01154j, -0.15089 + 0.03504j, -0.14193 - 0.01821j, -0.03565 + 0.03853j, 0.00373 - 0.04257j, 0.06872 - 0.05573j, 0.09586 + 0.07711j, 0.00182 - 0.03337j, -0.10790 + 0.08255j, 0.06250 - 0.03125j, -0.00527 - 0.11799j, 0.00182 + 0.05304j, 0.05923 + 0.02687j, -0.09460 + 0.11347j, 0.06227 - 0.14667j, -0.03565 + 0.03377j, -0.10488 - 0.05448j, 0.02589 + 0.09754j, 0.06134 - 0.07480j, 0.07984 + 0.06226j, -0.02766 + 0.02419j, 0.04162 - 0.02844j, -0.09425 - 0.14799j, -0.04601 + 0.09145j, 0.09289 + 0.12172j, -0.06250 + 0.00000j, 0.09289 - 0.12172j, -0.04601 - 0.09145j, -0.09425 + 0.14799j, 0.04162 + 0.02844j, -0.02766 - 0.02419j, 0.07984 - 0.06226j, 0.06134 + 0.07480j, 0.02589 - 0.09754j, -0.10488 + 0.05448j, -0.03565 - 0.03377j, 0.06227 + 0.14667j, -0.09460 - 0.11347j, 0.05923 - 0.02687j, 0.00182 - 0.05304j, -0.00527 + 0.11799j, 0.06250 + 0.03125j, -0.10790 - 0.08255j, 0.00182 + 0.03337j, 0.09586 - 0.07711j, 0.06872 + 0.05573j, 0.00373 + 0.04257j, -0.03565 - 0.03853j, -0.14193 + 0.01821j, -0.15089 - 0.03504j, 0.14492 - 0.01154j, 0.07984 + 0.05798j, -0.06544 - 0.02403j, 0.10927 - 0.05236j, 0.14303 + 0.12879j, -0.04601 - 0.13003j, -0.11594 + 0.05444j)), 1, 0, 0.999999999)
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(header_mod.base())
        self.blocks_tag_gate_0 = blocks.tag_gate(gr.sizeof_gr_complex * 1, False)
        self.blocks_null_sink_0 = blocks.null_sink(gr.sizeof_gr_complex*1)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_message_debug_0 = blocks.message_debug()
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex*1, fft_len+fft_len/4)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(-2.0/fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'), (self.digital_header_payload_demux_0, 'header_data'))    
        self.msg_connect((self.pir_get_timestamp_delta_cm_0, 'out'), (self.blocks_message_debug_0, 'print'))    
        self.connect((self.analog_frequency_modulator_fc_0, 0), (self.blocks_multiply_xx_0, 0))    
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))    
        self.connect((self.blocks_multiply_xx_0, 0), (self.digital_corr_est_cc_0, 0))    
        self.connect((self.blocks_multiply_xx_0, 0), (self.digital_header_payload_demux_0, 0))    
        self.connect((self.blocks_tag_gate_0, 0), (self.blocks_delay_0, 0))    
        self.connect((self.blocks_tag_gate_0, 0), (self.digital_ofdm_sync_sc_cfb_0, 0))    
        self.connect((self.digital_constellation_decoder_cb_0, 0), (self.digital_packet_headerparser_b_0, 0))    
        self.connect((self.digital_corr_est_cc_0, 0), (self.pir_get_timestamp_delta_cm_0, 0))    
        self.connect((self.digital_header_payload_demux_0, 1), (self.digital_ofdm_serializer_vcc_header_0, 0))    
        self.connect((self.digital_header_payload_demux_0, 0), (self.fft_vxx_0, 0))    
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0), (self.digital_ofdm_frame_equalizer_vcvc_0, 0))    
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0), (self.digital_ofdm_serializer_vcc_header, 0))    
        self.connect((self.digital_ofdm_serializer_vcc_header, 0), (self.digital_constellation_decoder_cb_0, 0))    
        self.connect((self.digital_ofdm_serializer_vcc_header_0, 0), (self.blocks_null_sink_0, 0))    
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0), (self.analog_frequency_modulator_fc_0, 0))    
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1), (self.digital_header_payload_demux_0, 1))    
        self.connect((self.fft_vxx_0, 0), (self.digital_ofdm_chanest_vcvc_0, 0))    
        self.connect((self.uhd_usrp_source_0, 0), (self.blocks_tag_gate_0, 0))    
Example #41
0
    def __init__(self):
        gr.top_block.__init__(self, "Coded multicasting scheme")

        ##################################################
        # Variables
        ##################################################
        self.pilot_symbols = pilot_symbols = ((
            1,
            1,
            1,
            -1,
        ), )
        self.pilot_carriers = pilot_carriers = ((
            -21,
            -7,
            7,
            21,
        ), )
        self.payload_mod = payload_mod = digital.constellation_qpsk()
        self.packet_length_tag_key = packet_length_tag_key = "packet_len"
        self.occupied_carriers = occupied_carriers = (
            range(-26, -21) + range(-20, -7) + range(-6, 0) + range(1, 7) +
            range(8, 21) + range(22, 27), )
        self.length_tag_key = length_tag_key = "frame_len"
        self.header_mod = header_mod = digital.constellation_bpsk()
        self.fft_len = fft_len = 64

        self.variable_constellation_0 = variable_constellation_0 = digital.constellation_calcdist(
            ([-1 - 1j, -1 + 1j, 1 + 1j, 1 - 1j]), ([0, 1, 3, 2]), 4, 1).base()

        self.sync_word2 = sync_word2 = [
            0, 0, 0, 0, 0, 0, -1, -1, -1, -1, 1, 1, -1, -1, -1, 1, -1, 1, 1, 1,
            1, 1, -1, -1, -1, -1, -1, 1, -1, -1, 1, -1, 0, 1, -1, 1, 1, 1, -1,
            1, 1, 1, -1, 1, 1, 1, 1, -1, 1, -1, -1, -1, 1, -1, 1, -1, -1, -1,
            -1, 0, 0, 0, 0, 0
        ]
        self.sync_word1 = sync_word1 = [
            0., 0., 0., 0., 0., 0., 0., 1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., -1.41421356, 0., -1.41421356, 0.,
            1.41421356, 0., -1.41421356, 0., 1.41421356, 0., -1.41421356, 0.,
            -1.41421356, 0., -1.41421356, 0., -1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            -1.41421356, 0., 1.41421356, 0., 1.41421356, 0., 1.41421356, 0.,
            0., 0., 0., 0., 0.
        ]
        self.samp_rate = samp_rate = 500000
        self.payload_equalizer = payload_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, payload_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 0, 1)
        self.packet_len = packet_len = 96
        self.header_formatter = header_formatter = digital.packet_header_ofdm(
            occupied_carriers,
            n_syms=1,
            len_tag_key=packet_length_tag_key,
            frame_len_tag_key=length_tag_key,
            bits_per_header_sym=header_mod.bits_per_symbol(),
            bits_per_payload_sym=payload_mod.bits_per_symbol(),
            scramble_header=False)
        self.header_equalizer = header_equalizer = digital.ofdm_equalizer_simpledfe(
            fft_len, header_mod.base(), occupied_carriers, pilot_carriers,
            pilot_symbols, 0, 1)
        self.Users = Users = 5
        self.Small_Packet_Len = Small_Packet_Len = 100
        self.Files = Files = 20
        self.Demands = Demands = 4
        self.Chunks = Chunks = 100

        ##################################################
        # Blocks
        ##################################################
        self.projectGT_crc32_1_bb_0 = projectGT.crc32_1_bb(True, "packet_len")
        self.projectCACHE_gain_bf_0 = projectCACHE.gain_bf(
            Demands, Small_Packet_Len, "packet_len", False)
        self.projectCACHE_Tx_1P_b_0 = projectCACHE.Tx_1P_b(
            True, Users, Files, Chunks, Demands, Small_Packet_Len,
            "packet_len")
        self.fft_vxx_1 = fft.fft_vcc(fft_len, True, (), True, 1)
        self.fft_vxx_0_0 = fft.fft_vcc(fft_len, False, (()), True, 1)
        self.fft_vxx_0 = fft.fft_vcc(fft_len, True, (()), True, 1)
        self.digital_packet_headerparser_b_0 = digital.packet_headerparser_b(
            header_formatter.base())
        self.digital_packet_headergenerator_bb_0 = digital.packet_headergenerator_bb(
            header_formatter.formatter(), "packet_len")
        self.digital_ofdm_sync_sc_cfb_0 = digital.ofdm_sync_sc_cfb(
            fft_len, fft_len / 4, False)
        self.digital_ofdm_serializer_vcc_payload = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, packet_length_tag_key,
            1, '', True)
        self.digital_ofdm_serializer_vcc_header = digital.ofdm_serializer_vcc(
            fft_len, occupied_carriers, length_tag_key, '', 0, '', True)
        self.digital_ofdm_frame_equalizer_vcvc_1 = digital.ofdm_frame_equalizer_vcvc(
            payload_equalizer.base(), fft_len / 4, length_tag_key, True, 0)
        self.digital_ofdm_frame_equalizer_vcvc_0 = digital.ofdm_frame_equalizer_vcvc(
            header_equalizer.base(), fft_len / 4, length_tag_key, True, 1)
        self.digital_ofdm_cyclic_prefixer_0 = digital.ofdm_cyclic_prefixer(
            fft_len, fft_len + fft_len / 4, 0, packet_length_tag_key)
        self.digital_ofdm_chanest_vcvc_0 = digital.ofdm_chanest_vcvc(
            (sync_word1), (sync_word2), 1, 0, 3, False)
        self.digital_ofdm_carrier_allocator_cvc_0 = digital.ofdm_carrier_allocator_cvc(
            fft_len, occupied_carriers, pilot_carriers, pilot_symbols,
            (sync_word1, sync_word2), packet_length_tag_key)
        self.digital_header_payload_demux_0 = digital.header_payload_demux(
            3,
            fft_len,
            fft_len / 4,
            length_tag_key,
            "",
            True,
            gr.sizeof_gr_complex,
            "rx_time",
            samp_rate,
            (),
            0,
        )
        self.digital_crc32_bb_0 = digital.crc32_bb(False,
                                                   packet_length_tag_key, True)
        self.digital_constellation_decoder_cb_1 = digital.constellation_decoder_cb(
            payload_mod.base())
        self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(
            header_mod.base())
        self.digital_chunks_to_symbols_xx_0_1 = digital.chunks_to_symbols_bc(
            (header_mod.points()), 1)
        self.digital_chunks_to_symbols_xx_0_0 = digital.chunks_to_symbols_bc(
            (payload_mod.points()), 1)
        self.channels_channel_model_0_0 = channels.channel_model(
            noise_voltage=0.0200,
            frequency_offset=1.0,
            epsilon=1.0,
            taps=(1.0, ),
            noise_seed=0,
            block_tags=False)
        self.blocks_throttle_0_0 = blocks.throttle(gr.sizeof_gr_complex * 1,
                                                   samp_rate, True)
        self.blocks_tagged_stream_mux_0 = blocks.tagged_stream_mux(
            gr.sizeof_gr_complex * 1, packet_length_tag_key, 0)
        (self.blocks_tagged_stream_mux_0).set_max_output_buffer(8192)
        self.blocks_tag_gate_0 = blocks.tag_gate(gr.sizeof_gr_complex * 1,
                                                 False)
        self.blocks_tag_debug_1 = blocks.tag_debug(gr.sizeof_char * 1,
                                                   'Rx Bytes', "")
        self.blocks_tag_debug_1.set_display(False)
        self.blocks_tag_debug_0_0 = blocks.tag_debug(gr.sizeof_gr_complex * 1,
                                                     'chnl use', "")
        self.blocks_tag_debug_0_0.set_display(True)
        self.blocks_tag_debug_0 = blocks.tag_debug(gr.sizeof_char * 1, '', "")
        self.blocks_tag_debug_0.set_display(False)
        self.blocks_repack_bits_bb_0_0 = blocks.repack_bits_bb(
            8, payload_mod.bits_per_symbol(), packet_length_tag_key, False,
            gr.GR_LSB_FIRST)
        self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(
            payload_mod.bits_per_symbol(), 8, packet_length_tag_key, True,
            gr.GR_LSB_FIRST)
        self.blocks_null_sink_0_0_0 = blocks.null_sink(gr.sizeof_float * 1)
        self.blocks_null_sink_0_0 = blocks.null_sink(gr.sizeof_float * 1)
        self.blocks_null_sink_0 = blocks.null_sink(gr.sizeof_float * 1)
        self.blocks_multiply_xx_0 = blocks.multiply_vcc(1)
        self.blocks_multiply_const_vxx_1 = blocks.multiply_const_vcc((1, ))
        self.blocks_delay_0 = blocks.delay(gr.sizeof_gr_complex * 1,
                                           fft_len + fft_len / 4)
        self.analog_frequency_modulator_fc_0 = analog.frequency_modulator_fc(
            -2.0 / fft_len)

        ##################################################
        # Connections
        ##################################################
        self.msg_connect((self.digital_packet_headerparser_b_0, 'header_data'),
                         (self.digital_header_payload_demux_0, 'header_data'))
        self.connect((self.analog_frequency_modulator_fc_0, 0),
                     (self.blocks_multiply_xx_0, 0))
        self.connect((self.blocks_delay_0, 0), (self.blocks_multiply_xx_0, 1))
        self.connect((self.blocks_multiply_const_vxx_1, 0),
                     (self.blocks_throttle_0_0, 0))
        self.connect((self.blocks_multiply_xx_0, 0),
                     (self.digital_header_payload_demux_0, 0))
        self.connect((self.blocks_repack_bits_bb_0, 0),
                     (self.projectGT_crc32_1_bb_0, 0))
        self.connect((self.blocks_repack_bits_bb_0_0, 0),
                     (self.digital_chunks_to_symbols_xx_0_0, 0))
        self.connect((self.blocks_tag_gate_0, 0),
                     (self.blocks_multiply_const_vxx_1, 0))
        self.connect((self.blocks_tagged_stream_mux_0, 0),
                     (self.digital_ofdm_carrier_allocator_cvc_0, 0))
        self.connect((self.blocks_throttle_0_0, 0),
                     (self.channels_channel_model_0_0, 0))
        self.connect((self.channels_channel_model_0_0, 0),
                     (self.blocks_delay_0, 0))
        self.connect((self.channels_channel_model_0_0, 0),
                     (self.digital_ofdm_sync_sc_cfb_0, 0))
        self.connect((self.digital_chunks_to_symbols_xx_0_0, 0),
                     (self.blocks_tagged_stream_mux_0, 1))
        self.connect((self.digital_chunks_to_symbols_xx_0_1, 0),
                     (self.blocks_tagged_stream_mux_0, 0))
        self.connect((self.digital_constellation_decoder_cb_0, 0),
                     (self.digital_packet_headerparser_b_0, 0))
        self.connect((self.digital_constellation_decoder_cb_1, 0),
                     (self.blocks_repack_bits_bb_0, 0))
        self.connect((self.digital_crc32_bb_0, 0),
                     (self.blocks_repack_bits_bb_0_0, 0))
        self.connect((self.digital_crc32_bb_0, 0),
                     (self.digital_packet_headergenerator_bb_0, 0))
        self.connect((self.digital_header_payload_demux_0, 0),
                     (self.fft_vxx_0, 0))
        self.connect((self.digital_header_payload_demux_0, 1),
                     (self.fft_vxx_1, 0))
        self.connect((self.digital_ofdm_carrier_allocator_cvc_0, 0),
                     (self.fft_vxx_0_0, 0))
        self.connect((self.digital_ofdm_chanest_vcvc_0, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_0, 0))
        self.connect((self.digital_ofdm_cyclic_prefixer_0, 0),
                     (self.blocks_tag_debug_0_0, 0))
        self.connect((self.digital_ofdm_cyclic_prefixer_0, 0),
                     (self.blocks_tag_gate_0, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_0, 0),
                     (self.digital_ofdm_serializer_vcc_header, 0))
        self.connect((self.digital_ofdm_frame_equalizer_vcvc_1, 0),
                     (self.digital_ofdm_serializer_vcc_payload, 0))
        self.connect((self.digital_ofdm_serializer_vcc_header, 0),
                     (self.digital_constellation_decoder_cb_0, 0))
        self.connect((self.digital_ofdm_serializer_vcc_payload, 0),
                     (self.digital_constellation_decoder_cb_1, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 0),
                     (self.analog_frequency_modulator_fc_0, 0))
        self.connect((self.digital_ofdm_sync_sc_cfb_0, 1),
                     (self.digital_header_payload_demux_0, 1))
        self.connect((self.digital_packet_headergenerator_bb_0, 0),
                     (self.digital_chunks_to_symbols_xx_0_1, 0))
        self.connect((self.fft_vxx_0, 0),
                     (self.digital_ofdm_chanest_vcvc_0, 0))
        self.connect((self.fft_vxx_0_0, 0),
                     (self.digital_ofdm_cyclic_prefixer_0, 0))
        self.connect((self.fft_vxx_1, 0),
                     (self.digital_ofdm_frame_equalizer_vcvc_1, 0))
        self.connect((self.projectCACHE_Tx_1P_b_0, 0),
                     (self.blocks_tag_debug_0, 0))
        self.connect((self.projectCACHE_Tx_1P_b_0, 0),
                     (self.digital_crc32_bb_0, 0))
        self.connect((self.projectCACHE_gain_bf_0, 2),
                     (self.blocks_null_sink_0, 0))
        self.connect((self.projectCACHE_gain_bf_0, 1),
                     (self.blocks_null_sink_0_0, 0))
        self.connect((self.projectCACHE_gain_bf_0, 0),
                     (self.blocks_null_sink_0_0_0, 0))
        self.connect((self.projectGT_crc32_1_bb_0, 0),
                     (self.blocks_tag_debug_1, 0))
        self.connect((self.projectGT_crc32_1_bb_0, 0),
                     (self.projectCACHE_gain_bf_0, 0))