Ejemplo n.º 1
0
    def __init__(self):
        gr.top_block.__init__(self, "LTE hierarchical Flowgraph")

        ##################################################
        # Variables
        ##################################################
        self.style = style = "tx_diversity"
        self.samp_rate = samp_rate = 7.68e6
        self.fftlen = fftlen = 512
        self.N_rb_dl = N_rb_dl = 6

        ##################################################
        # Blocks
        ##################################################
        self.ext = lte_pbch_extraction(
            N_rb_dl=6,
            style=style,
        )
        self.eq = demod_and_eq(
            fftlen=512,
            N_rb_dl=6,
        )
        self.daemon = lte.cell_id_daemon(self.eq.eq.eq, self.ext.demux,
                                         self.ext.descr)
        self.synchronization_0 = synchronization(
            fftlen=512,
            daemon="daemon",
        )
        self.lte_mib_unpack_vb_0 = lte.mib_unpack_vb()
        self.lte_bch_decode_0 = lte_bch_decode()
        self.gr_throttle_0 = gr.throttle(gr.sizeof_gr_complex * 1, samp_rate)
        self.gr_file_source_0 = gr.file_source(
            gr.sizeof_gr_complex * 1,
            "/home/demel/Dokumente/Messungen/Messung_LTE_2012-05-23_12:47:32.dat",
            False)
        self.blks2_rational_resampler_xxx_0 = blks2.rational_resampler_ccc(
            interpolation=768,
            decimation=1000,
            taps=None,
            fractional_bw=None,
        )

        ##################################################
        # Connections
        ##################################################
        self.connect((self.eq, 2), (self.ext, 2))
        self.connect((self.eq, 1), (self.ext, 1))
        self.connect((self.eq, 0), (self.ext, 0))
        self.connect((self.synchronization_0, 0), (self.eq, 0))
        self.connect((self.ext, 0), (self.lte_bch_decode_0, 0))
        self.connect((self.lte_bch_decode_0, 1), (self.lte_mib_unpack_vb_0, 1))
        self.connect((self.lte_bch_decode_0, 0), (self.lte_mib_unpack_vb_0, 0))
        self.connect((self.gr_throttle_0, 0), (self.synchronization_0, 0))
        self.connect((self.blks2_rational_resampler_xxx_0, 0),
                     (self.gr_throttle_0, 0))
        self.connect((self.gr_file_source_0, 0),
                     (self.blks2_rational_resampler_xxx_0, 0))
    def setUp(self):
        self.tb = gr.top_block()

        fftl = 2048
        N_rb_dl = 6

        # These blocks are just "dummy" blocks for this QA
        self.eq = lte.linear_OFDM_estimator_vcvc(N_rb_dl)
        self.demux = lte.pbch_demux_vcvc(N_rb_dl)
        self.descr = lte.descrambling_vfvf()
        self.daemon = lte.cell_id_daemon(self.eq, self.demux, self.descr)

        # Source 'n' Sink
        data = range(2 * fftl)
        self.src = gr.vector_source_c(data, False, fftl)
        self.snk = gr.vector_sink_c(fftl)
        self.tagsnk = gr.tag_debug(gr.sizeof_gr_complex * fftl, "SYMBOL TAG")
        # This is the UUT
        self.sss = lte.hier_sss_sync2_vcvc(self.daemon, fftl)

        self.tb.connect(self.src, self.sss, self.snk)
        self.tb.connect(self.sss, self.tagsnk)
Ejemplo n.º 3
0
    def setUp (self):
    
        #print os.getpid()
        #raw_input("Press the ANY key to continue")
        setuptime = time.clock()
    
        self.tb = gr.top_block ()
        
        print "\nqa_multi_block_test START"
 

        offset =  1133
        fftl = 512
        cell_id = 124
        N_rb_dl = 6
        I = 768
        D = 1000

        # This first part is for syncing!
        #self.src  = gr.vector_source_c(intu,False,1)
        
        infile1 = '/home/demel/Dokumente/Messungen/Messung_LTE_2012-05-23_12:48:19.dat' # successful!
        infile2 = '/home/demel/Dokumente/Messungen/Messung_LTE_2012-05-23_12:48:07.dat' # failed!
        infile3 = '/home/demel/Dokumente/Messungen/Messung_LTE_2012-05-23_12:46:30.dat' # successful!
        infile4 = '/home/johannes/lte/data/Messung_LTE_2012-05-23_12:47:32.dat' # successful!
        infile5 = '/home/demel/Dokumente/Messungen/Messung_LTE_2012-05-23_12:49:57.dat' # successful!
        
        samps = (fftl*7*2*10+10*fftl)*300 +offset
        input_file = infile3
        print input_file
        
        self.src = gr.file_source(gr.sizeof_gr_complex,input_file, False)
        self.resample = blks2.rational_resampler_ccc(I, D)
        
        self.head1 = gr.head(gr.sizeof_gr_complex, samps)
        #self.tag  = lte_swig.tag_symbol_cc(offset,fftl)
        self.sync = lte_swig.cp_time_freq_sync_cc(fftl)
        self.pss = lte.hier_pss_sync_cc(fftl)
        self.est = lte.hier_freq_estimate_cc(fftl)
        # This is the actual place to initialize self.sss
        # Nevertheless it it the last block to be initialized because it needs pointers to some others.
        # self.sss = lte.hier_sss_sync_cc(fftl)
        
        #This part does still process all data (more ore less)
        self.rcp  = lte_swig.remove_cp_cvc(fftl)        
        self.fft  = gr.fft_vcc(fftl,True,window.rectangular(fftl),False,1)
        self.ext  = lte_swig.extract_occupied_tones_vcvc(N_rb_dl,fftl)
        
        self.eq   = lte.linear_OFDM_estimator_hier_vcvc(N_rb_dl)#cell_id,
        #self.eq.set_cell_id(cell_id)
        #self.sh1  = gr.skiphead(gr.sizeof_gr_complex*12*N_rb_dl,7)
        #self.sh2  = gr.skiphead(gr.sizeof_gr_complex*12*N_rb_dl,7)
        #self.sh3  = gr.skiphead(gr.sizeof_gr_complex*12*N_rb_dl,7)
        
        # After the next block only the PBCH is processed!
        self.demux= lte_swig.pbch_demux_vcvc(N_rb_dl)#cell_id,
        #self.demux.set_cell_id(cell_id)
        self.pd1  = lte_swig.pre_decoder_vcvc(1,'tx_diversity')
        self.pd2  = lte_swig.pre_decoder_vcvc(2,'tx_diversity')
        self.ldm1 = lte_swig.layer_demapper_vcvc(1,'tx_diversity')
        self.ldm2 = lte_swig.layer_demapper_vcvc(2,'tx_diversity')
        self.int  = gr.interleave(240*8)
        self.dmd  = lte_swig.qpsk_soft_demod_vcvf()
       	self.ld   = lte_swig.descrambling_vfvf()
       	#self.ld.set_cell_id(cell_id)
        self.lru  = lte_swig.rate_unmatch_vff()
        

        # After Viterbi decoding, only bits are processed!
        self.vit  = lte.viterbi_vfvb()
        self.crc  = lte_swig.crc_calculator_vbvb()
        self.mib  = lte_swig.mib_unpack_vb()
        
        #############################################################
        # This last block is just a daemon to propagate the calculated cell id
        #############################################################
        
        self.daemon = lte.cell_id_daemon(self.eq.get_eq(),self.demux, self.ld)
        self.sss = lte.hier_sss_sync_cc(self.daemon, fftl)
        
        # declaration of additional sink blocks for tests
        #self.snk1 = gr.vector_sink_f(120)
        #self.snk2 = gr.vector_sink_b(40)
        
        
        # Connect all blocks together!
        self.tb.connect(self.src,self.resample,self.head1,self.sync,self.pss,self.est,self.sss,self.rcp,self.fft,self.ext,self.eq)#
        
        self.tb.connect( (self.eq,0), (self.demux,0) )
        self.tb.connect( (self.eq,1), (self.demux,1) )
        self.tb.connect( (self.eq,2), (self.demux,2) )
        
        self.tb.connect( (self.demux,0) ,(self.pd1,0) )
        self.tb.connect( (self.demux,1) ,(self.pd1,1) )
        self.tb.connect( (self.demux,0) ,(self.pd2,0) )
        self.tb.connect( (self.demux,1) ,(self.pd2,1) )
        self.tb.connect( (self.demux,2) ,(self.pd2,2) )
        self.tb.connect(self.pd1,self.ldm1,(self.int,0) )
        self.tb.connect(self.pd2,self.ldm2,(self.int,1) )
        self.tb.connect(self.int,self.dmd,self.ld,self.lru,self.vit,self.crc)
        self.tb.connect( (self.crc,0),(self.mib,0) )
        self.tb.connect( (self.crc,1),(self.mib,1) )
        
        # additional sink blocks for testing
        #self.tb.connect(self.lru,self.snk1)
        #self.tb.connect(self.vit,self.snk2)
        
        print "\n\nsetuptime = " + str(time.clock() - setuptime) + "\n\n"
Ejemplo n.º 4
0
    def setUp(self):

        #print os.getpid()
        #raw_input("Press the ANY key to continue")
        setuptime = time.clock()

        self.tb = gr.top_block()

        print "\nqa_multi_block_test START"

        offset = 1133
        fftl = 512
        cell_id = 124
        N_rb_dl = 6
        I = 768
        D = 1000

        # This first part is for syncing!
        #self.src  = gr.vector_source_c(intu,False,1)

        infile1 = '/home/demel/Dokumente/Messungen/Messung_LTE_2012-05-23_12:48:19.dat'  # successful!
        infile2 = '/home/demel/Dokumente/Messungen/Messung_LTE_2012-05-23_12:48:07.dat'  # failed!
        infile3 = '/home/demel/Dokumente/Messungen/Messung_LTE_2012-05-23_12:46:30.dat'  # successful!
        infile4 = '/home/johannes/lte/data/Messung_LTE_2012-05-23_12:47:32.dat'  # successful!
        infile5 = '/home/demel/Dokumente/Messungen/Messung_LTE_2012-05-23_12:49:57.dat'  # successful!

        samps = (fftl * 7 * 2 * 10 + 10 * fftl) * 300 + offset
        input_file = infile3
        print input_file

        self.src = gr.file_source(gr.sizeof_gr_complex, input_file, False)
        self.resample = blks2.rational_resampler_ccc(I, D)

        self.head1 = gr.head(gr.sizeof_gr_complex, samps)
        #self.tag  = lte_swig.tag_symbol_cc(offset,fftl)
        self.sync = lte_swig.cp_time_freq_sync_cc(fftl)
        self.pss = lte.hier_pss_sync_cc(fftl)
        self.est = lte.hier_freq_estimate_cc(fftl)
        # This is the actual place to initialize self.sss
        # Nevertheless it it the last block to be initialized because it needs pointers to some others.
        # self.sss = lte.hier_sss_sync_cc(fftl)

        #This part does still process all data (more ore less)
        self.rcp = lte_swig.remove_cp_cvc(fftl)
        self.fft = gr.fft_vcc(fftl, True, window.rectangular(fftl), False, 1)
        self.ext = lte_swig.extract_occupied_tones_vcvc(N_rb_dl, fftl)

        self.eq = lte.linear_OFDM_estimator_hier_vcvc(N_rb_dl)  #cell_id,
        #self.eq.set_cell_id(cell_id)
        #self.sh1  = gr.skiphead(gr.sizeof_gr_complex*12*N_rb_dl,7)
        #self.sh2  = gr.skiphead(gr.sizeof_gr_complex*12*N_rb_dl,7)
        #self.sh3  = gr.skiphead(gr.sizeof_gr_complex*12*N_rb_dl,7)

        # After the next block only the PBCH is processed!
        self.demux = lte_swig.pbch_demux_vcvc(N_rb_dl)  #cell_id,
        #self.demux.set_cell_id(cell_id)
        self.pd1 = lte_swig.pre_decoder_vcvc(1, 'tx_diversity')
        self.pd2 = lte_swig.pre_decoder_vcvc(2, 'tx_diversity')
        self.ldm1 = lte_swig.layer_demapper_vcvc(1, 'tx_diversity')
        self.ldm2 = lte_swig.layer_demapper_vcvc(2, 'tx_diversity')
        self.int = gr.interleave(240 * 8)
        self.dmd = lte_swig.qpsk_soft_demod_vcvf()
        self.ld = lte_swig.descrambling_vfvf()
        #self.ld.set_cell_id(cell_id)
        self.lru = lte_swig.rate_unmatch_vff()

        # After Viterbi decoding, only bits are processed!
        self.vit = lte.viterbi_vfvb()
        self.crc = lte_swig.crc_calculator_vbvb()
        self.mib = lte_swig.mib_unpack_vb()

        #############################################################
        # This last block is just a daemon to propagate the calculated cell id
        #############################################################

        self.daemon = lte.cell_id_daemon(self.eq.get_eq(), self.demux, self.ld)
        self.sss = lte.hier_sss_sync_cc(self.daemon, fftl)

        # declaration of additional sink blocks for tests
        #self.snk1 = gr.vector_sink_f(120)
        #self.snk2 = gr.vector_sink_b(40)

        # Connect all blocks together!
        self.tb.connect(self.src, self.resample, self.head1, self.sync,
                        self.pss, self.est, self.sss, self.rcp, self.fft,
                        self.ext, self.eq)  #

        self.tb.connect((self.eq, 0), (self.demux, 0))
        self.tb.connect((self.eq, 1), (self.demux, 1))
        self.tb.connect((self.eq, 2), (self.demux, 2))

        self.tb.connect((self.demux, 0), (self.pd1, 0))
        self.tb.connect((self.demux, 1), (self.pd1, 1))
        self.tb.connect((self.demux, 0), (self.pd2, 0))
        self.tb.connect((self.demux, 1), (self.pd2, 1))
        self.tb.connect((self.demux, 2), (self.pd2, 2))
        self.tb.connect(self.pd1, self.ldm1, (self.int, 0))
        self.tb.connect(self.pd2, self.ldm2, (self.int, 1))
        self.tb.connect(self.int, self.dmd, self.ld, self.lru, self.vit,
                        self.crc)
        self.tb.connect((self.crc, 0), (self.mib, 0))
        self.tb.connect((self.crc, 1), (self.mib, 1))

        # additional sink blocks for testing
        #self.tb.connect(self.lru,self.snk1)
        #self.tb.connect(self.vit,self.snk2)

        print "\n\nsetuptime = " + str(time.clock() - setuptime) + "\n\n"
Ejemplo n.º 5
0
	def __init__(self):
		gr.top_block.__init__(self, "LTE flowgraph")
		Qt.QWidget.__init__(self)
		self.setWindowTitle("LTE flowgraph")
		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.fftlen = fftlen = 512
		self.cpl0 = cpl0 = 160*fftlen/2048
		self.cpl = cpl = 144*fftlen/2048
		self.slotl = slotl = 7*fftlen+6*cpl+cpl0
		self.samp_rate = samp_rate = slotl/0.0005
		self.style = style = "tx_diversity"
		self.interp_val = interp_val = int(samp_rate/1e4)
		self.N_rb_dl = N_rb_dl = 6

		##################################################
		# Blocks
		##################################################
		self.eq = lte.linear_OFDM_equalizer_hier_vcvc(N_rb_dl)
		self.descr = lte.descrambling_vfvf()
		self.demux = lte.pbch_demux_vcvc(N_rb_dl)
		self.daemon = lte.cell_id_daemon(self.eq.eq, self.demux, self.descr)
		self.qtgui_sink_x_0 = qtgui.sink_c(
			1024, #fftsize
			firdes.WIN_BLACKMAN_hARRIS, #wintype
			0, #fc
			samp_rate, #bw
			"QT GUI Plot", #name
			True, #plotfreq
			True, #plotwaterfall
			True, #plottime
			True, #plotconst
		)
		self._qtgui_sink_x_0_win = sip.wrapinstance(self.qtgui_sink_x_0.pyqwidget(), Qt.QWidget)
		self.top_layout.addWidget(self._qtgui_sink_x_0_win)
		self.lte_viterbi_vfvb_0 = lte.viterbi_vfvb()
		self.lte_remove_cp_cvc_1 = lte.remove_cp_cvc(fftlen)
		self.lte_rate_unmatch_vff_0 = lte.rate_unmatch_vff()
		self.lte_qpsk_soft_demod_vcvf_0 = lte.qpsk_soft_demod_vcvf()
		self.lte_pss_sync_hier_cc_0 = lte.pss_sync_hier_cc(fftlen)
		self.lte_pre_decoder_vcvc_0_0 = lte.pre_decoder_vcvc(2, style)
		self.lte_pre_decoder_vcvc_0 = lte.pre_decoder_vcvc(1, style)
		self.lte_mib_unpack_vb_0 = lte.mib_unpack_vb()
		self.lte_layer_demapper_vcvc_0_0 = lte.layer_demapper_vcvc(2, style)
		self.lte_layer_demapper_vcvc_0 = lte.layer_demapper_vcvc(1, style)
		self.lte_hier_sss_sync_cc_0 = lte.hier_sss_sync_cc(self.daemon, fftlen)
		self.lte_hier_freq_estimate_cc_0 = lte.hier_freq_estimate_cc(fftlen)
		self.lte_extract_occupied_tones_vcvc_0 = lte.extract_occupied_tones_vcvc(N_rb_dl,fftlen)
		self.lte_crc_calculator_vbvb_0 = lte.crc_calculator_vbvb()
		self.lte_cp_time_freq_sync_cc_0 = lte.cp_time_freq_sync_cc(fftlen)
		self.gr_vector_to_stream_0 = gr.vector_to_stream(gr.sizeof_gr_complex*1, 240)
		self.gr_throttle_0 = gr.throttle(gr.sizeof_gr_complex*1, samp_rate)
		self.gr_interleave_0 = gr.interleave(gr.sizeof_gr_complex*240)
		self.gr_file_source_0 = gr.file_source(gr.sizeof_gr_complex*1, "/home/demel/Dokumente/Messungen_31_10_2012/samples_12.5MSps_20dB.iq", False)
		self.fft_vxx_0 = fft.fft_vcc(fftlen, True, (window.rectangular(fftlen)), False, 1)
		self.blks2_rational_resampler_xxx_0 = blks2.rational_resampler_ccc(
			interpolation=interp_val,
			decimation=1250,
			taps=None,
			fractional_bw=None,
		)

		##################################################
		# Connections
		##################################################
		self.connect((self.gr_file_source_0, 0), (self.blks2_rational_resampler_xxx_0, 0))
		self.connect((self.blks2_rational_resampler_xxx_0, 0), (self.gr_throttle_0, 0))
		self.connect((self.lte_hier_freq_estimate_cc_0, 0), (self.lte_hier_sss_sync_cc_0, 0))
		self.connect((self.lte_pss_sync_hier_cc_0, 0), (self.lte_hier_freq_estimate_cc_0, 0))
		self.connect((self.lte_cp_time_freq_sync_cc_0, 0), (self.lte_pss_sync_hier_cc_0, 0))
		self.connect((self.gr_throttle_0, 0), (self.lte_cp_time_freq_sync_cc_0, 0))
		self.connect((self.lte_hier_sss_sync_cc_0, 0), (self.lte_remove_cp_cvc_1, 0))
		self.connect((self.fft_vxx_0, 0), (self.lte_extract_occupied_tones_vcvc_0, 0))
		self.connect((self.lte_remove_cp_cvc_1, 0), (self.fft_vxx_0, 0))
		self.connect((self.lte_extract_occupied_tones_vcvc_0, 0), (self.eq, 0))
		self.connect((self.lte_pre_decoder_vcvc_0, 0), (self.lte_layer_demapper_vcvc_0, 0))
		self.connect((self.eq, 0), (self.demux, 0))
		self.connect((self.eq, 1), (self.demux, 1))
		self.connect((self.eq, 2), (self.demux, 2))
		self.connect((self.lte_pre_decoder_vcvc_0_0, 0), (self.lte_layer_demapper_vcvc_0_0, 0))
		self.connect((self.lte_layer_demapper_vcvc_0_0, 0), (self.gr_interleave_0, 1))
		self.connect((self.demux, 1), (self.lte_pre_decoder_vcvc_0_0, 1))
		self.connect((self.demux, 1), (self.lte_pre_decoder_vcvc_0, 1))
		self.connect((self.demux, 0), (self.lte_pre_decoder_vcvc_0, 0))
		self.connect((self.demux, 2), (self.lte_pre_decoder_vcvc_0_0, 2))
		self.connect((self.demux, 0), (self.lte_pre_decoder_vcvc_0_0, 0))
		self.connect((self.lte_qpsk_soft_demod_vcvf_0, 0), (self.descr, 0))
		self.connect((self.gr_interleave_0, 0), (self.lte_qpsk_soft_demod_vcvf_0, 0))
		self.connect((self.lte_layer_demapper_vcvc_0, 0), (self.gr_interleave_0, 0))
		self.connect((self.descr, 0), (self.lte_rate_unmatch_vff_0, 0))
		self.connect((self.lte_crc_calculator_vbvb_0, 1), (self.lte_mib_unpack_vb_0, 1))
		self.connect((self.lte_crc_calculator_vbvb_0, 0), (self.lte_mib_unpack_vb_0, 0))
		self.connect((self.lte_viterbi_vfvb_0, 0), (self.lte_crc_calculator_vbvb_0, 0))
		self.connect((self.lte_rate_unmatch_vff_0, 0), (self.lte_viterbi_vfvb_0, 0))
		self.connect((self.gr_interleave_0, 0), (self.gr_vector_to_stream_0, 0))
		self.connect((self.gr_vector_to_stream_0, 0), (self.qtgui_sink_x_0, 0))
Ejemplo n.º 6
0
	def __init__(self):
		gr.top_block.__init__(self, "LTE flowgraph")

		##################################################
		# Variables
		##################################################
		self.fftlen = fftlen = 2048
		self.cpl0 = cpl0 = 160*fftlen/2048
		self.cpl = cpl = 144*fftlen/2048
		self.slotl = slotl = 7*fftlen+6*cpl+cpl0
		self.samp_rate = samp_rate = slotl/0.0005
		self.style = style = "tx_diversity"
		self.interp_val = interp_val = int(samp_rate/1e4)
		self.N_rb_dl = N_rb_dl = 6

		##################################################
		# Blocks
		##################################################
		self.eq = lte.linear_OFDM_estimator_hier_vcvc(N_rb_dl)
		self.descr = lte.descrambling_vfvf()
		self.demux = lte.pbch_demux_vcvc(N_rb_dl)
		self.daemon = lte.cell_id_daemon(self.eq.eq, self.demux, self.descr)
		self.lte_viterbi_vfvb_0 = lte.viterbi_vfvb()
		self.lte_remove_cp_cvc_1 = lte.remove_cp_cvc(fftlen)
		self.lte_rate_unmatch_vff_0 = lte.rate_unmatch_vff()
		self.lte_qpsk_soft_demod_vcvf_0 = lte.qpsk_soft_demod_vcvf()
		self.lte_pre_decoder_vcvc_0_0 = lte.pre_decoder_vcvc(2, style)
		self.lte_pre_decoder_vcvc_0 = lte.pre_decoder_vcvc(1, style)
		self.lte_mib_unpack_vb_0 = lte.mib_unpack_vb()
		self.lte_layer_demapper_vcvc_0_0 = lte.layer_demapper_vcvc(2, style)
		self.lte_layer_demapper_vcvc_0 = lte.layer_demapper_vcvc(1, style)
		self.lte_hier_sss_sync_cc_0 = lte.hier_sss_sync_cc(self.daemon, fftlen)
		self.lte_hier_pss_sync_cc_0 = lte.hier_pss_sync_cc(fftlen)
		self.lte_hier_freq_estimate_cc_0 = lte.hier_freq_estimate_cc(fftlen)
		self.lte_extract_occupied_tones_vcvc_0 = lte.extract_occupied_tones_vcvc(N_rb_dl,fftlen)
		self.lte_crc_calculator_vbvb_0 = lte.crc_calculator_vbvb()
		self.lte_cp_time_freq_sync_cc_0 = lte.cp_time_freq_sync_cc(fftlen)
		self.gr_throttle_0 = gr.throttle(gr.sizeof_gr_complex*1, samp_rate)
		self.gr_interleave_0 = gr.interleave(gr.sizeof_gr_complex*240)
		self.gr_file_source_0 = gr.file_source(gr.sizeof_gr_complex*1, "/home/demel/Dokumente/Messungen/Messung_LTE_2012-05-23_12:47:32.dat", False)
		self.fft_vxx_0 = fft.fft_vcc(fftlen, True, (window.rectangular(fftlen)), False, 1)
		self.blks2_rational_resampler_xxx_0 = blks2.rational_resampler_ccc(
			interpolation=interp_val,
			decimation=1000,
			taps=None,
			fractional_bw=None,
		)

		##################################################
		# Connections
		##################################################
		self.connect((self.gr_file_source_0, 0), (self.blks2_rational_resampler_xxx_0, 0))
		self.connect((self.blks2_rational_resampler_xxx_0, 0), (self.gr_throttle_0, 0))
		self.connect((self.lte_hier_freq_estimate_cc_0, 0), (self.lte_hier_sss_sync_cc_0, 0))
		self.connect((self.gr_throttle_0, 0), (self.lte_cp_time_freq_sync_cc_0, 0))
		self.connect((self.lte_hier_sss_sync_cc_0, 0), (self.lte_remove_cp_cvc_1, 0))
		self.connect((self.fft_vxx_0, 0), (self.lte_extract_occupied_tones_vcvc_0, 0))
		self.connect((self.lte_remove_cp_cvc_1, 0), (self.fft_vxx_0, 0))
		self.connect((self.lte_pre_decoder_vcvc_0, 0), (self.lte_layer_demapper_vcvc_0, 0))
		self.connect((self.lte_pre_decoder_vcvc_0_0, 0), (self.lte_layer_demapper_vcvc_0_0, 0))
		self.connect((self.lte_layer_demapper_vcvc_0_0, 0), (self.gr_interleave_0, 1))
		self.connect((self.demux, 1), (self.lte_pre_decoder_vcvc_0_0, 1))
		self.connect((self.demux, 1), (self.lte_pre_decoder_vcvc_0, 1))
		self.connect((self.demux, 0), (self.lte_pre_decoder_vcvc_0, 0))
		self.connect((self.demux, 2), (self.lte_pre_decoder_vcvc_0_0, 2))
		self.connect((self.demux, 0), (self.lte_pre_decoder_vcvc_0_0, 0))
		self.connect((self.lte_qpsk_soft_demod_vcvf_0, 0), (self.descr, 0))
		self.connect((self.gr_interleave_0, 0), (self.lte_qpsk_soft_demod_vcvf_0, 0))
		self.connect((self.lte_layer_demapper_vcvc_0, 0), (self.gr_interleave_0, 0))
		self.connect((self.descr, 0), (self.lte_rate_unmatch_vff_0, 0))
		self.connect((self.lte_crc_calculator_vbvb_0, 1), (self.lte_mib_unpack_vb_0, 1))
		self.connect((self.lte_crc_calculator_vbvb_0, 0), (self.lte_mib_unpack_vb_0, 0))
		self.connect((self.lte_viterbi_vfvb_0, 0), (self.lte_crc_calculator_vbvb_0, 0))
		self.connect((self.lte_rate_unmatch_vff_0, 0), (self.lte_viterbi_vfvb_0, 0))
		self.connect((self.lte_cp_time_freq_sync_cc_0, 0), (self.lte_hier_pss_sync_cc_0, 0))
		self.connect((self.lte_hier_pss_sync_cc_0, 0), (self.lte_hier_freq_estimate_cc_0, 0))
		self.connect((self.lte_extract_occupied_tones_vcvc_0, 0), (self.eq, 0))
		self.connect((self.eq, 0), (self.demux, 0))
		self.connect((self.eq, 1), (self.demux, 1))
		self.connect((self.eq, 2), (self.demux, 2))