def __init__(self, bitrate,
constellation, samples_per_symbol,
differential, excess_bw, gray_coded,
freq_bw, timing_bw, phase_bw,
verbose, log):
gr.hier_block2.__init__(self, "bert_receive",
gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
gr.io_signature(0, 0, 0)) # Output signature
self._bitrate = bitrate
self._demod = digital.generic_demod(constellation, samples_per_symbol,
differential, excess_bw, gray_coded,
freq_bw, timing_bw, phase_bw,
verbose, log)
self._symbol_rate = self._bitrate / self._demod.bits_per_symbol()
self._sample_rate = self._symbol_rate * samples_per_symbol
# Add an SNR probe on the demodulated constellation
self._snr_probe = digital.probe_mpsk_snr_est_c(digital.SNR_EST_M2M4, alpha=10.0/self._symbol_rate)
self.connect(self._demod.time_recov, self._snr_probe)
# Descramble BERT sequence. A channel error will create 3 incorrect bits
self._descrambler = gr.descrambler_bb(0x8A, 0x7F, 7) # CCSDS 7-bit descrambler
# Measure BER by the density of 0s in the stream
self._ber = gr.probe_density_b(1.0/self._symbol_rate)
self.connect(self, self._demod, self._descrambler, self._ber)
def __init__(self, bitrate, constellation, samples_per_symbol,
differential, excess_bw, gray_coded, freq_bw, timing_bw,
phase_bw, verbose, log):
gr.hier_block2.__init__(
self,
"bert_receive",
gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
gr.io_signature(0, 0, 0)) # Output signature
self._bitrate = bitrate
self._demod = digital.generic_demod(constellation, samples_per_symbol,
differential, excess_bw,
gray_coded, freq_bw, timing_bw,
phase_bw, verbose, log)
self._symbol_rate = self._bitrate * self._demod.bits_per_symbol()
self._sample_rate = self._symbol_rate * samples_per_symbol
# Add an SNR probe on the demodulated constellation
self._snr_probe = gr.probe_mpsk_snr_c(10.0 / self._symbol_rate)
self.connect(self._demod.time_recov, self._snr_probe)
# Descramble BERT sequence. A channel error will create 3 incorrect bits
self._descrambler = gr.descrambler_bb(0x8A, 0x7F,
7) # CCSDS 7-bit descrambler
# Measure BER by the density of 0s in the stream
self._ber = gr.probe_density_b(1.0 / self._symbol_rate)
self.connect(self, self._demod, self._descrambler, self._ber)
def test_scrambler_descrambler(self):
src_data = (1,)*1000
src = gr.vector_source_b(src_data, False)
scrambler = gr.scrambler_bb(0x8a, 0x7F, 7) # CCSDS 7-bit scrambler
descrambler = gr.descrambler_bb(0x8a, 0x7F, 7)
dst = gr.vector_sink_b()
self.tb.connect(src, scrambler, descrambler, dst)
self.tb.run()
self.assertEqual(tuple(src_data[:-8]), dst.data()[8:]) # skip garbage during synchronization
def test_scrambler_descrambler(self):
src_data = (1,)*1000
src = gr.vector_source_b(src_data, False)
scrambler = gr.scrambler_bb(0x8a, 0x7F, 7) # CCSDS 7-bit scrambler
descrambler = gr.descrambler_bb(0x8a, 0x7F, 7)
dst = gr.vector_sink_b()
self.tb.connect(src, scrambler, descrambler, dst)
self.tb.run()
self.assertEqual(tuple(src_data[:-8]), dst.data()[8:]) # skip garbage during synchronization
def __init__(self): grc_wxgui.top_block_gui.__init__(self, title="Top Block") _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png" self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY)) ################################################## # Variables ################################################## self.samp_rate = samp_rate = 1000 ################################################## # Blocks ################################################## self.const_source_x_0 = gr.sig_source_f(0, gr.GR_CONST_WAVE, 0, 0, 0) self.gr_descrambler_bb_0 = gr.descrambler_bb(0x8A, 0x7F, 7) self.gr_float_to_complex_0 = gr.float_to_complex(1) self.gr_packed_to_unpacked_xx_0 = gr.packed_to_unpacked_bb(1, gr.GR_MSB_FIRST) self.gr_scrambler_bb_0 = gr.scrambler_bb(0x8A, 0x7F, 7) self.gr_throttle_0 = gr.throttle(gr.sizeof_gr_complex*1, samp_rate) self.gr_throttle_0_0 = gr.throttle(gr.sizeof_char*1, samp_rate) self.gr_throttle_0_0_0 = gr.throttle(gr.sizeof_char*1, samp_rate*8) self.gr_throttle_0_0_0_0 = gr.throttle(gr.sizeof_char*1, samp_rate*8*8) self.gr_uchar_to_float_0 = gr.uchar_to_float() self.gr_unpacked_to_packed_xx_0 = gr.unpacked_to_packed_bb(1, gr.GR_MSB_FIRST) self.gr_vector_source_x_0 = gr.vector_source_b((0, 1, 3,7,255,3,1,0), True, 1) self.wxgui_scopesink2_0 = scopesink2.scope_sink_c( self.GetWin(), title="Scope Plot", sample_rate=samp_rate*32, v_scale=0, v_offset=0, t_scale=0, ac_couple=False, xy_mode=False, num_inputs=1, ) self.Add(self.wxgui_scopesink2_0.win) ################################################## # Connections ################################################## self.connect((self.gr_float_to_complex_0, 0), (self.gr_throttle_0, 0)) self.connect((self.const_source_x_0, 0), (self.gr_float_to_complex_0, 1)) self.connect((self.gr_throttle_0, 0), (self.wxgui_scopesink2_0, 0)) self.connect((self.gr_vector_source_x_0, 0), (self.gr_throttle_0_0, 0)) self.connect((self.gr_throttle_0_0, 0), (self.gr_packed_to_unpacked_xx_0, 0)) self.connect((self.gr_descrambler_bb_0, 0), (self.gr_unpacked_to_packed_xx_0, 0)) self.connect((self.gr_packed_to_unpacked_xx_0, 0), (self.gr_throttle_0_0_0, 0)) self.connect((self.gr_throttle_0_0_0, 0), (self.gr_scrambler_bb_0, 0)) self.connect((self.gr_scrambler_bb_0, 0), (self.gr_throttle_0_0_0_0, 0)) self.connect((self.gr_throttle_0_0_0_0, 0), (self.gr_descrambler_bb_0, 0)) self.connect((self.gr_uchar_to_float_0, 0), (self.gr_float_to_complex_0, 0)) self.connect((self.gr_unpacked_to_packed_xx_0, 0), (self.gr_uchar_to_float_0, 0))
def __init__(self,
if_rate, # Incoming sample rate
symbol_rate, # Original symbol rate
excess_bw, # RRC excess bandwidth, typically 0.35-0.5
costas_alpha, # Costas loop 1st order gain, typically 0.01-0.2
costas_beta, # Costas loop 2nd order gain, typically alpha^2/4.0
costas_max, # Costas loop max frequency offset in radians/sample
mm_gain_mu, # M&M loop 1st order gain, typically 0.001-0.2
mm_gain_omega, # M&M loop 2nd order gain, typically alpha^2/4.0
mm_omega_limit, # M&M loop max timing error
):
gr.hier_block2.__init__(self, "receive_path",
gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
gr.io_signature(0, 0, 0)) # Output signature
grc_wxgui.top_block_gui.__init__(self, title="Top Block")
self._if_rate = if_rate
self._sps = int(self._if_rate/symbol_rate)
print "IF sample rate:", n2s(self._if_rate)
print "Symbol rate:", n2s(symbol_rate)
print "Samples/symbol:", self._sps
print "RRC bandwidth:", excess_bw
# Create AGC to scale input to unity
self._agc = gr.agc_cc(1e-5, 1.0, 1.0, 1.0)
# Create RRC with specified excess bandwidth
taps = gr.firdes.root_raised_cosine(1.0, # Gain
self._sps, # Sampling rate
1.0, # Symbol rate
excess_bw, # Roll-off factor
11*self._sps) # Number of taps
self._rrc = gr.fir_filter_ccf(1, taps)
# Create a Costas loop frequency/phase recovery block
print "Costas alpha:", costas_alpha
print "Costas beta:", costas_beta
print "Costas max:", costas_max
self._costas = gr.costas_loop_cc(costas_alpha, # PLL first order gain
costas_beta, # PLL second order gain
costas_max, # Max frequency offset rad/sample
-costas_max, # Min frequency offset rad/sample
2) # BPSK
# Create a M&M bit synchronization retiming block
mm_mu = 0.5
mm_omega = self._sps
print "MM gain mu:", mm_gain_mu
print "MM gain omega:", mm_gain_omega
print "MM omega limit:", mm_omega_limit
self._mm = gr.clock_recovery_mm_cc(mm_omega, # Initial samples/symbol
mm_gain_omega, # Second order gain
mm_mu, # Initial symbol phase
mm_gain_mu, # First order gain
mm_omega_limit) # Maximum timing offset
# Add an SNR probe on the demodulated constellation
self._snr_probe = gr.probe_mpsk_snr_c(10.0/symbol_rate)
# #Null for recuperate the out of snr
# self.gr_null_sink_0 = gr.null_sink(gr.sizeof_double)
#
# self.connect(self._snr_probe, (self.gr_null_sink_0,0))
self.connect(self._mm, self._snr_probe)
# Slice the resulting constellation into bits.
# Get inphase channel and make decision about 0
self._c2r = gr.complex_to_real()
self._slicer = gr.binary_slicer_fb()
# Descramble BERT sequence. A channel error will create 3 incorrect bits
self._descrambler = gr.descrambler_bb(0x8A, 0x7F, 7) # CCSDS 7-bit descrambler
# Measure BER by the density of 0s in the stream
self._ber = gr.probe_density_b(1.0/symbol_rate)
# #Null for recuperate the out of ber
# self.gr_null_sink_1 = gr.null_sink(gr.sizeof_double)
#
# self.connect(self._ber, self.gr_null_sink_1)
self.create_number_sink(self._sps)
self.connect((self._snr_probe, 0), (self.wxgui_numbersink2_0, 0))
self.connect((self._ber, 0), (self.wxgui_numbersink2_1, 0))
self.connect(self, self._agc, self._rrc, self._costas, self._mm,
self._c2r, self._slicer, self._descrambler, self._ber)
def __init__(self):
grc_wxgui.top_block_gui.__init__(self, title="Communication System Graphical Analyzer (LAPS/UFCG)")
##################################################
# Default Variables
##################################################
self.sps = 2
self.snr = 20
self.symbol_rate = 140000
self.mod_type = "DBPSK"
self.view = 1
self.band= 200
self.excess_bw=0.35
self.fading_flag = False
self.fdts = -8
self.fading_state_rx = False
##################################################
# Blocks Definition
##################################################
#A bit stream of 1's is generated at the source, scrambled,
#modulated and sent to the input of an AWGN channel.
#random.seed(42)
#self.source = gr.vector_source_b([random.randint(0, 2) for i in range(0,10^8)], True)
self.source = gr.vector_source_b((1,), True, 1)
self.thottle = gr.throttle(gr.sizeof_char,10e5)
self.scrambler = gr.scrambler_bb(0x40801, 0x92F72, 20) #Taxa de simbolos constante
self.pack = gr.unpacked_to_packed_bb(1, gr.GR_MSB_FIRST)
self.modulator = utils.mods[self.mod_type](self.sps,excess_bw=self.excess_bw)
self.channel = utils.channel(1/10.0**(self.snr/10.0),self.band,self.symbol_rate,self.sps)
#The noisy signal is demodulated, descrambled and the BER
#is estimated by the ber_estim block using the receiver
#density of 0 bits.
self.demodulator = utils.demods[self.mod_type](self.sps,excess_bw=self.excess_bw)
self.descrambler = gr.descrambler_bb(0x40801, 0x92F72, 20)
self.char2float = gr.char_to_float()
self.mov_average = gr.moving_average_ff(524288, 1/524288., 10000)
self.ber = utils.ber_estim()
#self.ber = utils.ber_estim_simple(3)
##################################################
# GUI Elements Definition
##################################################
#Defines an adds FFT Window to GUI
self.fft = fftsink.fft_sink_c(self.GetWin(), sample_rate=self.symbol_rate*self.sps, baseband_freq=5e6)
self.GridAdd(self.fft.win, 0,3,4,3)
self.ctr= gr.complex_to_real(1)
#Defines and adds SNR slider to GUI
_snr_sizer = wx.BoxSizer(wx.HORIZONTAL)
self._snr_text_box = forms.text_box(parent=self.GetWin(),
sizer=_snr_sizer, value=self.snr, callback=self.callback_snr,
label=" SNR (dB)", converter=forms.float_converter(),
proportion=0)
self._snr_slider = forms.slider(parent=self.GetWin(),
sizer=_snr_sizer, value=self.snr, callback=self.callback_snr,
minimum=0, maximum=20, style=wx.RA_HORIZONTAL, proportion=1)
self.GridAdd(_snr_sizer, 4, 3, 1, 3)
#Defines and adds bandwidth slider to GUI
band_sizer = wx.BoxSizer(wx.HORIZONTAL)
self.band_text_box = forms.text_box(parent=self.GetWin(),
sizer=band_sizer, value=self.band, callback=self.callback_band,
label="Bandwidth (kHz)", converter=forms.float_converter(),
proportion=0)
self.band_slider = forms.slider(parent=self.GetWin(),
sizer=band_sizer, value=self.band, callback=self.callback_band,
minimum=30, maximum=200, style=wx.RA_HORIZONTAL, proportion=1)
self.GridAdd(band_sizer, 5, 3, 1, 3)
#Defines and adds Rayleigh GUI elements
fading_sizer = wx.BoxSizer(wx.HORIZONTAL)
self.fading_text_box = forms.text_box(parent=self.GetWin(),
sizer=fading_sizer, value=self.fdts, callback=self.callback_fading,
label='Fading/log(FdTs)', converter=forms.float_converter(),
proportion=0)
self.fading_slider = forms.slider(parent=self.GetWin(),
sizer=fading_sizer, value=self.fdts, callback=self.callback_fading,
minimum=-8, maximum=-2, style=wx.RA_HORIZONTAL, proportion=1)
self.GridAdd(fading_sizer, 6, 3, 1, 3)
#Defines and adds modulation type chooser to GUI
self._mod_type_chooser = forms.radio_buttons(parent=self.GetWin(),
value=self.mod_type, callback=self.set_mod_type,
label="Modulation", choices=["DBPSK", "DQPSK", "D8PSK"],
labels=["DBPSK", "DQPSK", "D8PSK"], style=wx.RA_HORIZONTAL)
self.GridAdd(self._mod_type_chooser, 7, 4, 1, 2)
#Defines and adds signal source chooser
self.sig_src_chooser = forms.radio_buttons(parent=self.GetWin(),
value=self.view, callback=self.callback_view,
label="Signal Source", choices=[0,1],
labels=["Transmitter","Receiver"], style=wx.RA_VERTICAL)
self.GridAdd(self.sig_src_chooser, 7,3,1,1)
#Definition of the of constellation window and attachment to the GUI
self.constel = constsink.const_sink_c(self.GetWin(),
title="RX Constellation Plot", sample_rate=self.symbol_rate,
const_size=256, mod=self.mod_type)
self.GridAdd(self.constel.win,0,0,8,3)
#Definition of the constellation sink window and attachment to the GUI
self.number_sink = bersink.number_sink_f(self.GetWin(),
sample_rate=self.symbol_rate)
self.GridAdd(self.number_sink.win,8,0,1,6)
##################################################
# Blocks Connections
##################################################
#The necessary block connections to the system work as described above.
self.connect(self.source, self.scrambler , self.thottle, self.pack)
#self.connect(self.source , self.thottle, self.pack)
self.connect(self.pack, self.modulator, self.channel, self.demodulator)
self.connect(self.channel, self.fft)
self.connect(self.demodulator.diffdec, self.constel)
self.connect(self.demodulator, self.descrambler, self.char2float, self.mov_average)
self.connect(self.mov_average, self.ber, self.number_sink)
def __init__(self):
gr.top_block.__init__(self, "Simple QAM Simulation")
Qt.QWidget.__init__(self)
self.setWindowTitle("Simple QAM Simulation")
self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
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)
##################################################
# Variables
##################################################
self.constellation_cardinality = constellation_cardinality = 16
self.const_object = const_object = constellations()['qam'](
constellation_cardinality)
self.snr_db = snr_db = 20
self.constellation = constellation = const_object.points()
self.sps = sps = 8
self.samp_rate = samp_rate = 250000
self.noise_amp = noise_amp = sqrt((10**(-snr_db / 10.)) / 2.)
self.constellation_power = constellation_power = sqrt(
sum([abs(i)**2
for i in constellation]) / constellation_cardinality)
##################################################
# Blocks
##################################################
self.tabid_0 = Qt.QTabWidget()
self.tabid_0_widget_0 = Qt.QWidget()
self.tabid_0_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
self.tabid_0_widget_0)
self.tabid_0_grid_layout_0 = Qt.QGridLayout()
self.tabid_0_layout_0.addLayout(self.tabid_0_grid_layout_0)
self.tabid_0.addTab(self.tabid_0_widget_0, "TX")
self.tabid_0_widget_1 = Qt.QWidget()
self.tabid_0_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
self.tabid_0_widget_1)
self.tabid_0_grid_layout_1 = Qt.QGridLayout()
self.tabid_0_layout_1.addLayout(self.tabid_0_grid_layout_1)
self.tabid_0.addTab(self.tabid_0_widget_1, "CHANNEL")
self.tabid_0_widget_2 = Qt.QWidget()
self.tabid_0_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
self.tabid_0_widget_2)
self.tabid_0_grid_layout_2 = Qt.QGridLayout()
self.tabid_0_layout_2.addLayout(self.tabid_0_grid_layout_2)
self.tabid_0.addTab(self.tabid_0_widget_2, "RX")
self.top_grid_layout.addWidget(self.tabid_0, 30, 0, 10, 100)
self.tabid_2 = Qt.QTabWidget()
self.tabid_2_widget_0 = Qt.QWidget()
self.tabid_2_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
self.tabid_2_widget_0)
self.tabid_2_grid_layout_0 = Qt.QGridLayout()
self.tabid_2_layout_0.addLayout(self.tabid_2_grid_layout_0)
self.tabid_2.addTab(self.tabid_2_widget_0, "symbol-based")
self.tabid_2_widget_1 = Qt.QWidget()
self.tabid_2_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
self.tabid_2_widget_1)
self.tabid_2_grid_layout_1 = Qt.QGridLayout()
self.tabid_2_layout_1.addLayout(self.tabid_2_grid_layout_1)
self.tabid_2.addTab(self.tabid_2_widget_1, "bit-based")
self.tabid_2_widget_2 = Qt.QWidget()
self.tabid_2_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
self.tabid_2_widget_2)
self.tabid_2_grid_layout_2 = Qt.QGridLayout()
self.tabid_2_layout_2.addLayout(self.tabid_2_grid_layout_2)
self.tabid_2.addTab(self.tabid_2_widget_2, "BER")
self.tabid_0_layout_2.addWidget(self.tabid_2)
self.tabid_1 = Qt.QTabWidget()
self.tabid_1_widget_0 = Qt.QWidget()
self.tabid_1_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
self.tabid_1_widget_0)
self.tabid_1_grid_layout_0 = Qt.QGridLayout()
self.tabid_1_layout_0.addLayout(self.tabid_1_grid_layout_0)
self.tabid_1.addTab(self.tabid_1_widget_0, "bit-based")
self.tabid_1_widget_1 = Qt.QWidget()
self.tabid_1_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
self.tabid_1_widget_1)
self.tabid_1_grid_layout_1 = Qt.QGridLayout()
self.tabid_1_layout_1.addLayout(self.tabid_1_grid_layout_1)
self.tabid_1.addTab(self.tabid_1_widget_1, "scrambled")
self.tabid_1_widget_2 = Qt.QWidget()
self.tabid_1_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom,
self.tabid_1_widget_2)
self.tabid_1_grid_layout_2 = Qt.QGridLayout()
self.tabid_1_layout_2.addLayout(self.tabid_1_grid_layout_2)
self.tabid_1.addTab(self.tabid_1_widget_2, "symbol-based")
self.tabid_0_grid_layout_0.addWidget(self.tabid_1, 0, 0, 10, 10)
self.qtgui_time_sink_x_0 = qtgui.time_sink_f(
1024, #size
samp_rate, #bw
"QT GUI Plot", #name
1 #number of inputs
)
self._qtgui_time_sink_x_0_win = sip.wrapinstance(
self.qtgui_time_sink_x_0.pyqwidget(), Qt.QWidget)
self.tabid_2_layout_2.addWidget(self._qtgui_time_sink_x_0_win)
self.qtgui_sink_x_0_1_0_0 = qtgui.sink_f(
1024, #fftsize
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate, #bw
"QT GUI Plot", #name
False, #plotfreq
False, #plotwaterfall
True, #plottime
True, #plotconst
)
self._qtgui_sink_x_0_1_0_0_win = sip.wrapinstance(
self.qtgui_sink_x_0_1_0_0.pyqwidget(), Qt.QWidget)
self.tabid_1_layout_0.addWidget(self._qtgui_sink_x_0_1_0_0_win)
self.qtgui_sink_x_0_1_0 = qtgui.sink_f(
1024, #fftsize
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate, #bw
"QT GUI Plot", #name
True, #plotfreq
False, #plotwaterfall
True, #plottime
True, #plotconst
)
self._qtgui_sink_x_0_1_0_win = sip.wrapinstance(
self.qtgui_sink_x_0_1_0.pyqwidget(), Qt.QWidget)
self.tabid_1_layout_1.addWidget(self._qtgui_sink_x_0_1_0_win)
self.qtgui_sink_x_0_1 = qtgui.sink_c(
1024, #fftsize
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate, #bw
"QT GUI Plot", #name
False, #plotfreq
False, #plotwaterfall
True, #plottime
True, #plotconst
)
self._qtgui_sink_x_0_1_win = sip.wrapinstance(
self.qtgui_sink_x_0_1.pyqwidget(), Qt.QWidget)
self.tabid_1_layout_2.addWidget(self._qtgui_sink_x_0_1_win)
self.qtgui_sink_x_0_0_0_0 = qtgui.sink_c(
1024, #fftsize
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate, #bw
"QT GUI Plot", #name
True, #plotfreq
False, #plotwaterfall
True, #plottime
True, #plotconst
)
self._qtgui_sink_x_0_0_0_0_win = sip.wrapinstance(
self.qtgui_sink_x_0_0_0_0.pyqwidget(), Qt.QWidget)
self.tabid_2_layout_0.addWidget(self._qtgui_sink_x_0_0_0_0_win)
self.qtgui_sink_x_0_0_0 = qtgui.sink_f(
1024, #fftsize
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate, #bw
"QT GUI Plot", #name
False, #plotfreq
False, #plotwaterfall
True, #plottime
True, #plotconst
)
self._qtgui_sink_x_0_0_0_win = sip.wrapinstance(
self.qtgui_sink_x_0_0_0.pyqwidget(), Qt.QWidget)
self.tabid_2_layout_1.addWidget(self._qtgui_sink_x_0_0_0_win)
self.qtgui_sink_x_0_0 = qtgui.sink_c(
1024, #fftsize
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate, #bw
"QT GUI Plot", #name
True, #plotfreq
False, #plotwaterfall
True, #plottime
False, #plotconst
)
self._qtgui_sink_x_0_0_win = sip.wrapinstance(
self.qtgui_sink_x_0_0.pyqwidget(), Qt.QWidget)
self.tabid_0_layout_1.addWidget(self._qtgui_sink_x_0_0_win)
self.gr_vector_source_x_0_0 = gr.vector_source_b(([1, 0]), True, 1)
self.gr_vector_source_x_0 = gr.vector_source_b(([1, 0]), True, 1)
self.gr_unpack_k_bits_bb_0 = gr.unpack_k_bits_bb(
int(log2(constellation_cardinality)))
self.gr_throttle_0 = gr.throttle(gr.sizeof_gr_complex * 1, samp_rate)
self.gr_pack_k_bits_bb_0 = gr.pack_k_bits_bb(
int(log2(constellation_cardinality)))
self.gr_null_sink_0 = gr.null_sink(gr.sizeof_char * 1)
self.gr_noise_source_x_0 = gr.noise_source_c(gr.GR_GAUSSIAN, noise_amp,
0)
self.gr_nlog10_ff_0 = gr.nlog10_ff(1, 1, 0)
self.gr_multiply_const_vxx_0_0 = gr.multiply_const_vcc(
(1. / constellation_power, ))
self.gr_multiply_const_vxx_0 = gr.multiply_const_vcc(
(constellation_power, ))
self.gr_file_sink_0_1_0 = gr.file_sink(gr.sizeof_gr_complex * 1,
"rx_sym.32fc")
self.gr_file_sink_0_1_0.set_unbuffered(False)
self.gr_file_sink_0_1 = gr.file_sink(gr.sizeof_gr_complex * 1,
"tx_sym.32fc")
self.gr_file_sink_0_1.set_unbuffered(False)
self.gr_file_sink_0_0 = gr.file_sink(gr.sizeof_char * 1, "rx.8b")
self.gr_file_sink_0_0.set_unbuffered(False)
self.gr_file_sink_0 = gr.file_sink(gr.sizeof_char * 1, "tx.8b")
self.gr_file_sink_0.set_unbuffered(False)
self.gr_descrambler_bb_0 = gr.descrambler_bb(0xe4001, 0x7ffff, 19)
self.gr_char_to_float_1_0 = gr.char_to_float(1, 1)
self.gr_char_to_float_1 = gr.char_to_float(1, 1)
self.gr_char_to_float_0 = gr.char_to_float(1, 1)
self.gr_add_xx_0 = gr.add_vcc(1)
self.digital_scrambler_bb_0 = digital.scrambler_bb(
0xe4001, 0x7fffF, 19)
self.digital_constellation_receiver_cb_0 = digital.constellation_receiver_cb(
const_object.base(), 6.28 / 100, -0.25, +0.25)
self.digital_chunks_to_symbols_xx_0 = digital.chunks_to_symbols_bc(
(constellation), 1)
self.blks2_error_rate_0 = grc_blks2.error_rate(
type='BER',
win_size=samp_rate,
bits_per_symbol=1,
)
##################################################
# Connections
##################################################
self.connect((self.gr_vector_source_x_0, 0),
(self.digital_scrambler_bb_0, 0))
self.connect((self.digital_scrambler_bb_0, 0),
(self.gr_pack_k_bits_bb_0, 0))
self.connect((self.gr_pack_k_bits_bb_0, 0),
(self.digital_chunks_to_symbols_xx_0, 0))
self.connect((self.digital_constellation_receiver_cb_0, 0),
(self.gr_file_sink_0_0, 0))
self.connect((self.digital_constellation_receiver_cb_0, 0),
(self.gr_unpack_k_bits_bb_0, 0))
self.connect((self.gr_unpack_k_bits_bb_0, 0),
(self.gr_descrambler_bb_0, 0))
self.connect((self.gr_descrambler_bb_0, 0), (self.gr_null_sink_0, 0))
self.connect((self.gr_multiply_const_vxx_0, 0),
(self.digital_constellation_receiver_cb_0, 0))
self.connect((self.gr_descrambler_bb_0, 0),
(self.gr_char_to_float_0, 0))
self.connect((self.gr_char_to_float_0, 0),
(self.qtgui_sink_x_0_0_0, 0))
self.connect((self.gr_add_xx_0, 0), (self.gr_throttle_0, 0))
self.connect((self.gr_noise_source_x_0, 0), (self.gr_add_xx_0, 1))
self.connect((self.digital_chunks_to_symbols_xx_0, 0),
(self.gr_multiply_const_vxx_0_0, 0))
self.connect((self.gr_multiply_const_vxx_0_0, 0),
(self.gr_file_sink_0_1, 0))
self.connect((self.gr_multiply_const_vxx_0_0, 0),
(self.qtgui_sink_x_0_1, 0))
self.connect((self.gr_char_to_float_1, 0),
(self.qtgui_sink_x_0_1_0, 0))
self.connect((self.gr_pack_k_bits_bb_0, 0),
(self.gr_char_to_float_1, 0))
self.connect((self.gr_pack_k_bits_bb_0, 0), (self.gr_file_sink_0, 0))
self.connect((self.gr_char_to_float_1_0, 0),
(self.qtgui_sink_x_0_1_0_0, 0))
self.connect((self.gr_vector_source_x_0, 0),
(self.gr_char_to_float_1_0, 0))
self.connect((self.gr_multiply_const_vxx_0_0, 0),
(self.gr_add_xx_0, 0))
self.connect((self.gr_add_xx_0, 0), (self.qtgui_sink_x_0_0, 0))
self.connect((self.gr_throttle_0, 0),
(self.gr_multiply_const_vxx_0, 0))
self.connect((self.gr_throttle_0, 0), (self.gr_file_sink_0_1_0, 0))
self.connect((self.gr_throttle_0, 0), (self.qtgui_sink_x_0_0_0_0, 0))
self.connect((self.gr_nlog10_ff_0, 0), (self.qtgui_time_sink_x_0, 0))
self.connect((self.blks2_error_rate_0, 0), (self.gr_nlog10_ff_0, 0))
self.connect((self.gr_vector_source_x_0_0, 0),
(self.blks2_error_rate_0, 0))
self.connect((self.gr_descrambler_bb_0, 0),
(self.blks2_error_rate_0, 1))
def __init__(self,
if_rate, # Incoming sample rate
symbol_rate, # Original symbol rate
excess_bw, # RRC excess bandwidth, typically 0.35-0.5
costas_alpha, # Costas loop 1st order gain, typically 0.01-0.2
costas_beta, # Costas loop 2nd order gain, typically alpha^2/4.0
costas_max, # Costas loop max frequency offset in radians/sample
mm_gain_mu, # M&M loop 1st order gain, typically 0.001-0.2
mm_gain_omega, # M&M loop 2nd order gain, typically alpha^2/4.0
mm_omega_limit, # M&M loop max timing error
):
gr.hier_block2.__init__(self, "receive_path",
gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
gr.io_signature(0, 0, 0)) # Output signature
self._if_rate = if_rate
self._sps = int(self._if_rate/symbol_rate)
print "IF sample rate:", n2s(self._if_rate)
print "Symbol rate:", n2s(symbol_rate)
print "Samples/symbol:", self._sps
print "RRC bandwidth:", excess_bw
# Create AGC to scale input to unity
self._agc = gr.agc_cc(1e-5, 1.0, 1.0, 1.0)
# Create RRC with specified excess bandwidth
taps = gr.firdes.root_raised_cosine(1.0, # Gain
self._sps, # Sampling rate
1.0, # Symbol rate
excess_bw, # Roll-off factor
11*self._sps) # Number of taps
self._rrc = gr.fir_filter_ccf(1, taps)
# Create a Costas loop frequency/phase recovery block
print "Costas alpha:", costas_alpha
print "Costas beta:", costas_beta
print "Costas max:", costas_max
self._costas = gr.costas_loop_cc(costas_alpha, # PLL first order gain
costas_beta, # PLL second order gain
costas_max, # Max frequency offset rad/sample
-costas_max, # Min frequency offset rad/sample
2) # BPSK
# Create a M&M bit synchronization retiming block
mm_mu = 0.5
mm_omega = self._sps
print "MM gain mu:", mm_gain_mu
print "MM gain omega:", mm_gain_omega
print "MM omega limit:", mm_omega_limit
self._mm = gr.clock_recovery_mm_cc(mm_omega, # Initial samples/symbol
mm_gain_omega, # Second order gain
mm_mu, # Initial symbol phase
mm_gain_mu, # First order gain
mm_omega_limit) # Maximum timing offset
# Add an SNR probe on the demodulated constellation
self._snr_probe = gr.probe_mpsk_snr_c(10.0/symbol_rate)
self.connect(self._mm, self._snr_probe)
# Slice the resulting constellation into bits.
# Get inphase channel and make decision about 0
self._c2r = gr.complex_to_real()
self._slicer = gr.binary_slicer_fb()
# Descramble BERT sequence. A channel error will create 3 incorrect bits
self._descrambler = gr.descrambler_bb(0x8A, 0x7F, 7) # CCSDS 7-bit descrambler
# Measure BER by the density of 0s in the stream
self._ber = gr.probe_density_b(1.0/symbol_rate)
self.connect(self, self._agc, self._rrc, self._costas, self._mm,
self._c2r, self._slicer, self._descrambler, self._ber)
def __init__(self, options):
gr.hier_block2.__init__(self, "bpsk_demodulator",
gr.io_signature(1, 1, gr.sizeof_gr_complex), # Input signature
gr.io_signature(0, 0, 0)) # Output signature
grc_wxgui.top_block_gui.__init__(self, title="Top Block")
self._samples_per_symbol = options.samples_per_symbol
# Number of bits per symbol
self._bits_per_symbol = 1
# Create AGC to scale input to unity
self._agc = gr.agc_cc(1e-5, 1.0, 1.0, 1.0)
# Create RRC with specified excess bandwidth
taps = gr.firdes.root_raised_cosine(1.0, # Gain
self._samples_per_symbol, # Sampling rate
1.0, # Symbol rate
0.35, # Roll-off factor
11*self._samples_per_symbol) # Number of taps
self._rrc = gr.fir_filter_ccf(1, taps)
# Create a Costas loop frequency/phase recovery block
self._costas = digital.costas_loop_cc(6.28/100.0, 2)
self.gr_null_sink_f1 = gr.null_sink(gr.sizeof_float*1)
# Create a M&M bit synchronization retiming block
self._mm = digital.clock_recovery_mm_cc(self._samples_per_symbol, # Initial samples/symbol
1e-06, # Second order gain
0.5, # Initial symbol phase
0.001, # First order gain
0.0001) # Maximum timing offset
# Add an SNR probe on the demodulated constellation
#self._snr_probe = gr.probe_mpsk_snr_c(10.0/symbol_rate)
self._symbol_rate = options.data_rate / self._bits_per_symbol
#self._snr_probe = digital.mpsk_snr_est_cc(0, 10000, 0.001) # 0 at the first mean Simple
self._snr_probe = digital.probe_mpsk_snr_est_c(digital.SNR_EST_M2M4, alpha=10.0/self._symbol_rate)
#self._snr_probe = digital.mpsk_snr_est_cc(digital.SNR_EST_SIMPLE, alpha=10.0/self._symbol_rate)
# Slice the resulting constellation into bits.
# Get inphase channel and make decision about 0
self._c2r = gr.complex_to_real()
self._slicer = digital.binary_slicer_fb()
# Descramble BERT sequence. A channel error will create 3 incorrect bits
self._descrambler = gr.descrambler_bb(0x8A, 0x7F, 31) # CCSDS 7-bit descrambler
# Measure BER by the density of 0s in the stream
# self._ber = gr.probe_density_b(1.0/symbol_rate)
self._ber = grc_blks2.error_rate(type='BER',
win_size=1000,
bits_per_symbol=1)
#self.create_number_sink(self._samples_per_symbol)
self.gr_null_sink_f2 = gr.null_sink(gr.sizeof_float*1)
#Create a vector source reference to calculate BER
self._vector_source_ref = gr.vector_source_b(([1,]), True, 1)
#create a comparator
self.comparator = howto.compare_vector_cci((1, 1, 1, 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, 0, 0, 1), (0,0, 1, 1, 0,0), 5, 0, True)
#Connection of blocks
#"""""""""""""""""""""""""""""""""-->_snr_probe-->gr_null_sink_cc
# agc --> _rrc --> costas --> _mm --> _c2r --> _slicer --> _descrambler --> _ber --> gr_null_sink_f2
#"""""""""""""""""""""""""--> gr_null_sink_f1 "" _vector_source_ref-->
#
# self.connect(self, self._agc, self._rrc, self._costas, self._mm,
# self._c2r, self._slicer, self._descrambler, self.comparator, (self._ber, 1))
#
self.connect(self, self._agc, self._rrc, self._costas, self._mm,
self._c2r, self._slicer, self._descrambler, (self._ber, 1))
self.connect((self._costas, 1), (self.gr_null_sink_f1, 0))
self.connect(self._mm, self._snr_probe)
self.connect(self._vector_source_ref, (self._ber,0))
self.connect(self._ber, self.gr_null_sink_f2)
def descrambler(N):
op = gr.descrambler_bb(0x8a, 0x7F, 7)
tb = helper(N/1, op, gr.sizeof_char, gr.sizeof_char, 1, 1)
return tb
def __init__(self):
grc_wxgui.top_block_gui.__init__(
self, title="Communication System Graphical Analyzer (LAPS/UFCG)")
##################################################
# Default Variables
##################################################
self.sps = 2
self.snr = 20
self.symbol_rate = 140000
self.mod_type = "DBPSK"
self.view = 1
self.band = 200
self.excess_bw = 0.35
self.fading_flag = False
self.fdts = -8
self.fading_state_rx = False
##################################################
# Blocks Definition
##################################################
#A bit stream of 1's is generated at the source, scrambled,
#modulated and sent to the input of an AWGN channel.
#random.seed(42)
#self.source = gr.vector_source_b([random.randint(0, 2) for i in range(0,10^8)], True)
self.source = gr.vector_source_b((1, ), True, 1)
self.thottle = gr.throttle(gr.sizeof_char, 10e5)
self.scrambler = gr.scrambler_bb(0x40801, 0x92F72,
20) #Taxa de simbolos constante
self.pack = gr.unpacked_to_packed_bb(1, gr.GR_MSB_FIRST)
self.modulator = utils.mods[self.mod_type](self.sps,
excess_bw=self.excess_bw)
self.channel = utils.channel(1 / 10.0**(self.snr / 10.0), self.band,
self.symbol_rate, self.sps)
#The noisy signal is demodulated, descrambled and the BER
#is estimated by the ber_estim block using the receiver
#density of 0 bits.
self.demodulator = utils.demods[self.mod_type](
self.sps, excess_bw=self.excess_bw)
self.descrambler = gr.descrambler_bb(0x40801, 0x92F72, 20)
self.char2float = gr.char_to_float()
self.mov_average = gr.moving_average_ff(524288, 1 / 524288., 10000)
self.ber = utils.ber_estim()
#self.ber = utils.ber_estim_simple(3)
##################################################
# GUI Elements Definition
##################################################
#Defines an adds FFT Window to GUI
self.fft = fftsink.fft_sink_c(self.GetWin(),
sample_rate=self.symbol_rate * self.sps,
baseband_freq=5e6)
self.GridAdd(self.fft.win, 0, 3, 4, 3)
self.ctr = gr.complex_to_real(1)
#Defines and adds SNR slider to GUI
_snr_sizer = wx.BoxSizer(wx.HORIZONTAL)
self._snr_text_box = forms.text_box(parent=self.GetWin(),
sizer=_snr_sizer,
value=self.snr,
callback=self.callback_snr,
label=" SNR (dB)",
converter=forms.float_converter(),
proportion=0)
self._snr_slider = forms.slider(parent=self.GetWin(),
sizer=_snr_sizer,
value=self.snr,
callback=self.callback_snr,
minimum=0,
maximum=20,
style=wx.RA_HORIZONTAL,
proportion=1)
self.GridAdd(_snr_sizer, 4, 3, 1, 3)
#Defines and adds bandwidth slider to GUI
band_sizer = wx.BoxSizer(wx.HORIZONTAL)
self.band_text_box = forms.text_box(parent=self.GetWin(),
sizer=band_sizer,
value=self.band,
callback=self.callback_band,
label="Bandwidth (kHz)",
converter=forms.float_converter(),
proportion=0)
self.band_slider = forms.slider(parent=self.GetWin(),
sizer=band_sizer,
value=self.band,
callback=self.callback_band,
minimum=30,
maximum=200,
style=wx.RA_HORIZONTAL,
proportion=1)
self.GridAdd(band_sizer, 5, 3, 1, 3)
#Defines and adds Rayleigh GUI elements
fading_sizer = wx.BoxSizer(wx.HORIZONTAL)
self.fading_text_box = forms.text_box(
parent=self.GetWin(),
sizer=fading_sizer,
value=self.fdts,
callback=self.callback_fading,
label='Fading/log(FdTs)',
converter=forms.float_converter(),
proportion=0)
self.fading_slider = forms.slider(parent=self.GetWin(),
sizer=fading_sizer,
value=self.fdts,
callback=self.callback_fading,
minimum=-8,
maximum=-2,
style=wx.RA_HORIZONTAL,
proportion=1)
self.GridAdd(fading_sizer, 6, 3, 1, 3)
#Defines and adds modulation type chooser to GUI
self._mod_type_chooser = forms.radio_buttons(
parent=self.GetWin(),
value=self.mod_type,
callback=self.set_mod_type,
label="Modulation",
choices=["DBPSK", "DQPSK", "D8PSK"],
labels=["DBPSK", "DQPSK", "D8PSK"],
style=wx.RA_HORIZONTAL)
self.GridAdd(self._mod_type_chooser, 7, 4, 1, 2)
#Defines and adds signal source chooser
self.sig_src_chooser = forms.radio_buttons(
parent=self.GetWin(),
value=self.view,
callback=self.callback_view,
label="Signal Source",
choices=[0, 1],
labels=["Transmitter", "Receiver"],
style=wx.RA_VERTICAL)
self.GridAdd(self.sig_src_chooser, 7, 3, 1, 1)
#Definition of the of constellation window and attachment to the GUI
self.constel = constsink.const_sink_c(self.GetWin(),
title="RX Constellation Plot",
sample_rate=self.symbol_rate,
const_size=256,
mod=self.mod_type)
self.GridAdd(self.constel.win, 0, 0, 8, 3)
#Definition of the constellation sink window and attachment to the GUI
self.number_sink = bersink.number_sink_f(self.GetWin(),
sample_rate=self.symbol_rate)
self.GridAdd(self.number_sink.win, 8, 0, 1, 6)
##################################################
# Blocks Connections
##################################################
#The necessary block connections to the system work as described above.
self.connect(self.source, self.scrambler, self.thottle, self.pack)
#self.connect(self.source , self.thottle, self.pack)
self.connect(self.pack, self.modulator, self.channel, self.demodulator)
self.connect(self.channel, self.fft)
self.connect(self.demodulator.diffdec, self.constel)
self.connect(self.demodulator, self.descrambler, self.char2float,
self.mov_average)
self.connect(self.mov_average, self.ber, self.number_sink)
def __init__(self):
gr.top_block.__init__(self, "Simple QAM Simulation")
Qt.QWidget.__init__(self)
self.setWindowTitle("Simple QAM Simulation")
self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
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)
##################################################
# Variables
##################################################
self.constellation_cardinality = constellation_cardinality = 16
self.const_object = const_object = constellations()['qam'](constellation_cardinality)
self.snr_db = snr_db = 20
self.constellation = constellation = const_object.points()
self.sps = sps = 8
self.samp_rate = samp_rate = 250000
self.noise_amp = noise_amp = sqrt( (10**(-snr_db/10.)) /2. )
self.constellation_power = constellation_power = sqrt(sum([abs(i)**2 for i in constellation])/constellation_cardinality)
##################################################
# Blocks
##################################################
self.tabid_0 = Qt.QTabWidget()
self.tabid_0_widget_0 = Qt.QWidget()
self.tabid_0_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_0_widget_0)
self.tabid_0_grid_layout_0 = Qt.QGridLayout()
self.tabid_0_layout_0.addLayout(self.tabid_0_grid_layout_0)
self.tabid_0.addTab(self.tabid_0_widget_0, "TX")
self.tabid_0_widget_1 = Qt.QWidget()
self.tabid_0_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_0_widget_1)
self.tabid_0_grid_layout_1 = Qt.QGridLayout()
self.tabid_0_layout_1.addLayout(self.tabid_0_grid_layout_1)
self.tabid_0.addTab(self.tabid_0_widget_1, "CHANNEL")
self.tabid_0_widget_2 = Qt.QWidget()
self.tabid_0_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_0_widget_2)
self.tabid_0_grid_layout_2 = Qt.QGridLayout()
self.tabid_0_layout_2.addLayout(self.tabid_0_grid_layout_2)
self.tabid_0.addTab(self.tabid_0_widget_2, "RX")
self.top_grid_layout.addWidget(self.tabid_0, 30,0,10,100)
self.tabid_2 = Qt.QTabWidget()
self.tabid_2_widget_0 = Qt.QWidget()
self.tabid_2_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_2_widget_0)
self.tabid_2_grid_layout_0 = Qt.QGridLayout()
self.tabid_2_layout_0.addLayout(self.tabid_2_grid_layout_0)
self.tabid_2.addTab(self.tabid_2_widget_0, "symbol-based")
self.tabid_2_widget_1 = Qt.QWidget()
self.tabid_2_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_2_widget_1)
self.tabid_2_grid_layout_1 = Qt.QGridLayout()
self.tabid_2_layout_1.addLayout(self.tabid_2_grid_layout_1)
self.tabid_2.addTab(self.tabid_2_widget_1, "bit-based")
self.tabid_2_widget_2 = Qt.QWidget()
self.tabid_2_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_2_widget_2)
self.tabid_2_grid_layout_2 = Qt.QGridLayout()
self.tabid_2_layout_2.addLayout(self.tabid_2_grid_layout_2)
self.tabid_2.addTab(self.tabid_2_widget_2, "BER")
self.tabid_0_layout_2.addWidget(self.tabid_2)
self.tabid_1 = Qt.QTabWidget()
self.tabid_1_widget_0 = Qt.QWidget()
self.tabid_1_layout_0 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_1_widget_0)
self.tabid_1_grid_layout_0 = Qt.QGridLayout()
self.tabid_1_layout_0.addLayout(self.tabid_1_grid_layout_0)
self.tabid_1.addTab(self.tabid_1_widget_0, "bit-based")
self.tabid_1_widget_1 = Qt.QWidget()
self.tabid_1_layout_1 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_1_widget_1)
self.tabid_1_grid_layout_1 = Qt.QGridLayout()
self.tabid_1_layout_1.addLayout(self.tabid_1_grid_layout_1)
self.tabid_1.addTab(self.tabid_1_widget_1, "scrambled")
self.tabid_1_widget_2 = Qt.QWidget()
self.tabid_1_layout_2 = Qt.QBoxLayout(Qt.QBoxLayout.TopToBottom, self.tabid_1_widget_2)
self.tabid_1_grid_layout_2 = Qt.QGridLayout()
self.tabid_1_layout_2.addLayout(self.tabid_1_grid_layout_2)
self.tabid_1.addTab(self.tabid_1_widget_2, "symbol-based")
self.tabid_0_grid_layout_0.addWidget(self.tabid_1, 0,0,10,10)
self.qtgui_time_sink_x_0 = qtgui.time_sink_f(
1024, #size
samp_rate, #bw
"QT GUI Plot", #name
1 #number of inputs
)
self._qtgui_time_sink_x_0_win = sip.wrapinstance(self.qtgui_time_sink_x_0.pyqwidget(), Qt.QWidget)
self.tabid_2_layout_2.addWidget(self._qtgui_time_sink_x_0_win)
self.qtgui_sink_x_0_1_0_0 = qtgui.sink_f(
1024, #fftsize
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate, #bw
"QT GUI Plot", #name
False, #plotfreq
False, #plotwaterfall
True, #plottime
True, #plotconst
)
self._qtgui_sink_x_0_1_0_0_win = sip.wrapinstance(self.qtgui_sink_x_0_1_0_0.pyqwidget(), Qt.QWidget)
self.tabid_1_layout_0.addWidget(self._qtgui_sink_x_0_1_0_0_win)
self.qtgui_sink_x_0_1_0 = qtgui.sink_f(
1024, #fftsize
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate, #bw
"QT GUI Plot", #name
True, #plotfreq
False, #plotwaterfall
True, #plottime
True, #plotconst
)
self._qtgui_sink_x_0_1_0_win = sip.wrapinstance(self.qtgui_sink_x_0_1_0.pyqwidget(), Qt.QWidget)
self.tabid_1_layout_1.addWidget(self._qtgui_sink_x_0_1_0_win)
self.qtgui_sink_x_0_1 = qtgui.sink_c(
1024, #fftsize
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate, #bw
"QT GUI Plot", #name
False, #plotfreq
False, #plotwaterfall
True, #plottime
True, #plotconst
)
self._qtgui_sink_x_0_1_win = sip.wrapinstance(self.qtgui_sink_x_0_1.pyqwidget(), Qt.QWidget)
self.tabid_1_layout_2.addWidget(self._qtgui_sink_x_0_1_win)
self.qtgui_sink_x_0_0_0_0 = qtgui.sink_c(
1024, #fftsize
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate, #bw
"QT GUI Plot", #name
True, #plotfreq
False, #plotwaterfall
True, #plottime
True, #plotconst
)
self._qtgui_sink_x_0_0_0_0_win = sip.wrapinstance(self.qtgui_sink_x_0_0_0_0.pyqwidget(), Qt.QWidget)
self.tabid_2_layout_0.addWidget(self._qtgui_sink_x_0_0_0_0_win)
self.qtgui_sink_x_0_0_0 = qtgui.sink_f(
1024, #fftsize
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate, #bw
"QT GUI Plot", #name
False, #plotfreq
False, #plotwaterfall
True, #plottime
True, #plotconst
)
self._qtgui_sink_x_0_0_0_win = sip.wrapinstance(self.qtgui_sink_x_0_0_0.pyqwidget(), Qt.QWidget)
self.tabid_2_layout_1.addWidget(self._qtgui_sink_x_0_0_0_win)
self.qtgui_sink_x_0_0 = qtgui.sink_c(
1024, #fftsize
firdes.WIN_BLACKMAN_hARRIS, #wintype
0, #fc
samp_rate, #bw
"QT GUI Plot", #name
True, #plotfreq
False, #plotwaterfall
True, #plottime
False, #plotconst
)
self._qtgui_sink_x_0_0_win = sip.wrapinstance(self.qtgui_sink_x_0_0.pyqwidget(), Qt.QWidget)
self.tabid_0_layout_1.addWidget(self._qtgui_sink_x_0_0_win)
self.gr_vector_source_x_0_0 = gr.vector_source_b(([1,0]), True, 1)
self.gr_vector_source_x_0 = gr.vector_source_b(([1,0]), True, 1)
self.gr_unpack_k_bits_bb_0 = gr.unpack_k_bits_bb(int(log2(constellation_cardinality)))
self.gr_throttle_0 = gr.throttle(gr.sizeof_gr_complex*1, samp_rate)
self.gr_pack_k_bits_bb_0 = gr.pack_k_bits_bb(int(log2(constellation_cardinality)))
self.gr_null_sink_0 = gr.null_sink(gr.sizeof_char*1)
self.gr_noise_source_x_0 = gr.noise_source_c(gr.GR_GAUSSIAN, noise_amp, 0)
self.gr_nlog10_ff_0 = gr.nlog10_ff(1, 1, 0)
self.gr_multiply_const_vxx_0_0 = gr.multiply_const_vcc((1./constellation_power, ))
self.gr_multiply_const_vxx_0 = gr.multiply_const_vcc((constellation_power, ))
self.gr_file_sink_0_1_0 = gr.file_sink(gr.sizeof_gr_complex*1, "rx_sym.32fc")
self.gr_file_sink_0_1_0.set_unbuffered(False)
self.gr_file_sink_0_1 = gr.file_sink(gr.sizeof_gr_complex*1, "tx_sym.32fc")
self.gr_file_sink_0_1.set_unbuffered(False)
self.gr_file_sink_0_0 = gr.file_sink(gr.sizeof_char*1, "rx.8b")
self.gr_file_sink_0_0.set_unbuffered(False)
self.gr_file_sink_0 = gr.file_sink(gr.sizeof_char*1, "tx.8b")
self.gr_file_sink_0.set_unbuffered(False)
self.gr_descrambler_bb_0 = gr.descrambler_bb(0xe4001, 0x7ffff, 19)
self.gr_char_to_float_1_0 = gr.char_to_float(1, 1)
self.gr_char_to_float_1 = gr.char_to_float(1, 1)
self.gr_char_to_float_0 = gr.char_to_float(1, 1)
self.gr_add_xx_0 = gr.add_vcc(1)
self.digital_scrambler_bb_0 = digital.scrambler_bb(0xe4001, 0x7fffF, 19)
self.digital_constellation_receiver_cb_0 = digital.constellation_receiver_cb(const_object.base(), 6.28/100, -0.25, +0.25)
self.digital_chunks_to_symbols_xx_0 = digital.chunks_to_symbols_bc((constellation), 1)
self.blks2_error_rate_0 = grc_blks2.error_rate(
type='BER',
win_size=samp_rate,
bits_per_symbol=1,
)
##################################################
# Connections
##################################################
self.connect((self.gr_vector_source_x_0, 0), (self.digital_scrambler_bb_0, 0))
self.connect((self.digital_scrambler_bb_0, 0), (self.gr_pack_k_bits_bb_0, 0))
self.connect((self.gr_pack_k_bits_bb_0, 0), (self.digital_chunks_to_symbols_xx_0, 0))
self.connect((self.digital_constellation_receiver_cb_0, 0), (self.gr_file_sink_0_0, 0))
self.connect((self.digital_constellation_receiver_cb_0, 0), (self.gr_unpack_k_bits_bb_0, 0))
self.connect((self.gr_unpack_k_bits_bb_0, 0), (self.gr_descrambler_bb_0, 0))
self.connect((self.gr_descrambler_bb_0, 0), (self.gr_null_sink_0, 0))
self.connect((self.gr_multiply_const_vxx_0, 0), (self.digital_constellation_receiver_cb_0, 0))
self.connect((self.gr_descrambler_bb_0, 0), (self.gr_char_to_float_0, 0))
self.connect((self.gr_char_to_float_0, 0), (self.qtgui_sink_x_0_0_0, 0))
self.connect((self.gr_add_xx_0, 0), (self.gr_throttle_0, 0))
self.connect((self.gr_noise_source_x_0, 0), (self.gr_add_xx_0, 1))
self.connect((self.digital_chunks_to_symbols_xx_0, 0), (self.gr_multiply_const_vxx_0_0, 0))
self.connect((self.gr_multiply_const_vxx_0_0, 0), (self.gr_file_sink_0_1, 0))
self.connect((self.gr_multiply_const_vxx_0_0, 0), (self.qtgui_sink_x_0_1, 0))
self.connect((self.gr_char_to_float_1, 0), (self.qtgui_sink_x_0_1_0, 0))
self.connect((self.gr_pack_k_bits_bb_0, 0), (self.gr_char_to_float_1, 0))
self.connect((self.gr_pack_k_bits_bb_0, 0), (self.gr_file_sink_0, 0))
self.connect((self.gr_char_to_float_1_0, 0), (self.qtgui_sink_x_0_1_0_0, 0))
self.connect((self.gr_vector_source_x_0, 0), (self.gr_char_to_float_1_0, 0))
self.connect((self.gr_multiply_const_vxx_0_0, 0), (self.gr_add_xx_0, 0))
self.connect((self.gr_add_xx_0, 0), (self.qtgui_sink_x_0_0, 0))
self.connect((self.gr_throttle_0, 0), (self.gr_multiply_const_vxx_0, 0))
self.connect((self.gr_throttle_0, 0), (self.gr_file_sink_0_1_0, 0))
self.connect((self.gr_throttle_0, 0), (self.qtgui_sink_x_0_0_0_0, 0))
self.connect((self.gr_nlog10_ff_0, 0), (self.qtgui_time_sink_x_0, 0))
self.connect((self.blks2_error_rate_0, 0), (self.gr_nlog10_ff_0, 0))
self.connect((self.gr_vector_source_x_0_0, 0), (self.blks2_error_rate_0, 0))
self.connect((self.gr_descrambler_bb_0, 0), (self.blks2_error_rate_0, 1))
