diff options
Diffstat (limited to 'flowgraphs')
| -rwxr-xr-x | flowgraphs/qpsk_sim.py | 21 |
1 files changed, 5 insertions, 16 deletions
diff --git a/flowgraphs/qpsk_sim.py b/flowgraphs/qpsk_sim.py index 09a0741..b12e1a9 100755 --- a/flowgraphs/qpsk_sim.py +++ b/flowgraphs/qpsk_sim.py @@ -136,7 +136,6 @@ class qpsk_sim(gr.top_block, Qt.QWidget): self.fadingui_netsink_1 = fadingui.netsink(address='udp://localhost:31418', dtype="complex", vlen=1) self.fadingui_netsink_0_0 = fadingui.netsink(address='udp://localhost:31415', dtype="float", vlen=1) self.fadingui_netsink_0 = fadingui.netsink(address='udp://localhost:31416', dtype="complex", vlen=1) - self.fadingui_multipath_fading_0 = fadingui.multipath_fading(amplitudes=[0.2, 0.08, 0.5, 0.4], delays=[0.25, 3.25, 4, 6.3], los =False) self.fadingui_ber_0 = fadingui.ber(vgl=list(np.zeros(frame_len)), vlen=frame_len,address='udp://localhost:31420') self.digital_pfb_clock_sync_xxx_0 = digital.pfb_clock_sync_ccf(sps, 2 * np.pi / 100, rrc_taps, 32, 16, 1.5, 1) self.digital_corr_est_cc_0 = digital.corr_est_cc(access_code_symbols, 1, len(access_code_symbols) // 2, 0.9, digital.THRESHOLD_ABSOLUTE) @@ -150,20 +149,13 @@ class qpsk_sim(gr.top_block, Qt.QWidget): log=False) self.digital_constellation_decoder_cb_0 = digital.constellation_decoder_cb(qpsk_const) self.digital_cma_equalizer_cc_0 = digital.cma_equalizer_cc(15, 1, 2e-3, 1) + self.channels_selective_fading_model_0 = channels.selective_fading_model( 8, 5/samp_rate, True, 5, 0, (0,0.05e-6/samp_rate,0.12e-6/samp_rate,0.2e-6/samp_rate,0.23e-6/samp_rate,0.5e-6/samp_rate,1.6e-6/samp_rate,2.3e-6/samp_rate,5e-6/samp_rate), (0.7943282347242815,0.7943282347242815,0.7943282347242815,1,1,1,0.5011872336272722,0.31622776601683794,0.19952623149688797), 9 ) self.blocks_vector_source_x_0 = blocks.vector_source_b(testvec, True, 1, []) self.blocks_throttle_0 = blocks.throttle(gr.sizeof_gr_complex*1, samp_rate,True) self.blocks_tagged_stream_align_0 = blocks.tagged_stream_align(gr.sizeof_char*1, 'frame_start') self.blocks_stream_to_vector_0 = blocks.stream_to_vector(gr.sizeof_char*1, frame_len) self.blocks_stream_mux_0 = blocks.stream_mux(gr.sizeof_char*1, [len(testvec), 4]) self.blocks_repack_bits_bb_0 = blocks.repack_bits_bb(2, 8, "", False, gr.GR_LSB_FIRST) - self.blocks_file_sink_3 = blocks.file_sink(gr.sizeof_gr_complex*1, 'data/equalized_qpsk.dat', False) - self.blocks_file_sink_3.set_unbuffered(False) - self.blocks_file_sink_2 = blocks.file_sink(gr.sizeof_gr_complex*1, 'data/synchronized_qpsk.dat', False) - self.blocks_file_sink_2.set_unbuffered(False) - self.blocks_file_sink_1 = blocks.file_sink(gr.sizeof_gr_complex*1, 'data/locked_qpsk.dat', False) - self.blocks_file_sink_1.set_unbuffered(False) - self.blocks_file_sink_0 = blocks.file_sink(gr.sizeof_gr_complex*1, 'data/channel_qpsk.dat', False) - self.blocks_file_sink_0.set_unbuffered(False) self.blocks_complex_to_mag_0 = blocks.complex_to_mag(1) self.analog_random_source_x_0 = blocks.vector_source_b(list(map(int, numpy.random.randint(0, 255, 400))), True) @@ -178,23 +170,19 @@ class qpsk_sim(gr.top_block, Qt.QWidget): self.connect((self.blocks_stream_mux_0, 0), (self.digital_constellation_modulator_0, 0)) self.connect((self.blocks_stream_to_vector_0, 0), (self.fadingui_ber_0, 0)) self.connect((self.blocks_tagged_stream_align_0, 0), (self.blocks_repack_bits_bb_0, 0)) - self.connect((self.blocks_throttle_0, 0), (self.fadingui_multipath_fading_0, 0)) + self.connect((self.blocks_throttle_0, 0), (self.channels_selective_fading_model_0, 0)) self.connect((self.blocks_vector_source_x_0, 0), (self.blocks_stream_mux_0, 0)) - self.connect((self.digital_cma_equalizer_cc_0, 0), (self.blocks_file_sink_3, 0)) + self.connect((self.channels_selective_fading_model_0, 0), (self.digital_pfb_clock_sync_xxx_0, 0)) + self.connect((self.channels_selective_fading_model_0, 0), (self.fadingui_netsink_0, 0)) self.connect((self.digital_cma_equalizer_cc_0, 0), (self.digital_corr_est_cc_0, 0)) self.connect((self.digital_cma_equalizer_cc_0, 0), (self.fadingui_netsink_1, 0)) self.connect((self.digital_constellation_decoder_cb_0, 0), (self.blocks_tagged_stream_align_0, 0)) self.connect((self.digital_constellation_modulator_0, 0), (self.blocks_throttle_0, 0)) self.connect((self.digital_corr_est_cc_0, 1), (self.blocks_complex_to_mag_0, 0)) self.connect((self.digital_corr_est_cc_0, 0), (self.fadingui_phasecorrection_0, 0)) - self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.blocks_file_sink_2, 0)) self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.digital_cma_equalizer_cc_0, 0)) self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.fadingui_netsink_4, 0)) self.connect((self.digital_pfb_clock_sync_xxx_0, 0), (self.qtgui_const_sink_x_1, 1)) - self.connect((self.fadingui_multipath_fading_0, 0), (self.blocks_file_sink_0, 0)) - self.connect((self.fadingui_multipath_fading_0, 0), (self.digital_pfb_clock_sync_xxx_0, 0)) - self.connect((self.fadingui_multipath_fading_0, 0), (self.fadingui_netsink_0, 0)) - self.connect((self.fadingui_phasecorrection_0, 0), (self.blocks_file_sink_1, 0)) self.connect((self.fadingui_phasecorrection_0, 0), (self.digital_constellation_decoder_cb_0, 0)) self.connect((self.fadingui_phasecorrection_0, 0), (self.fadingui_netsink_3, 0)) self.connect((self.fadingui_phasecorrection_0, 0), (self.qtgui_const_sink_x_1, 0)) @@ -240,6 +228,7 @@ class qpsk_sim(gr.top_block, Qt.QWidget): def set_samp_rate(self, samp_rate): self.samp_rate = samp_rate self.blocks_throttle_0.set_sample_rate(self.samp_rate) + self.channels_selective_fading_model_0.set_fDTs(5/self.samp_rate) def get_rrc_taps(self): return self.rrc_taps |