diff options
Diffstat (limited to 'gr-digital/python/ofdm_sync_pnac.py')
| -rw-r--r-- | gr-digital/python/ofdm_sync_pnac.py | 52 |
1 files changed, 31 insertions, 21 deletions
diff --git a/gr-digital/python/ofdm_sync_pnac.py b/gr-digital/python/ofdm_sync_pnac.py index 10a1259641..ee7c82927a 100644 --- a/gr-digital/python/ofdm_sync_pnac.py +++ b/gr-digital/python/ofdm_sync_pnac.py @@ -24,6 +24,16 @@ import math from numpy import fft from gnuradio import gr +try: + from gnuradio import filter +except ImportError: + import filter_swig as filter + +try: + from gnuradio import blocks +except ImportError: + import blocks_swig as blocks + class ofdm_sync_pnac(gr.hier_block2): def __init__(self, fft_length, cp_length, kstime, logging=False): """ @@ -50,7 +60,7 @@ class ofdm_sync_pnac(gr.hier_block2): gr.io_signature2(2, 2, gr.sizeof_float, gr.sizeof_char)) # Output signature - self.input = gr.add_const_cc(0) + self.input = blocks.add_const_cc(0) symbol_length = fft_length + cp_length @@ -59,30 +69,30 @@ class ofdm_sync_pnac(gr.hier_block2): # cross-correlate with the known symbol kstime = [k.conjugate() for k in kstime[0:fft_length//2]] kstime.reverse() - self.crosscorr_filter = gr.fir_filter_ccc(1, kstime) + self.crosscorr_filter = filter.fir_filter_ccc(1, kstime) # Create a delay line - self.delay = gr.delay(gr.sizeof_gr_complex, fft_length/2) + self.delay = blocks.delay(gr.sizeof_gr_complex, fft_length/2) # Correlation from ML Sync - self.conjg = gr.conjugate_cc(); - self.corr = gr.multiply_cc(); + self.conjg = blocks.conjugate_cc(); + self.corr = blocks.multiply_cc(); # Create a moving sum filter for the input - self.mag = gr.complex_to_mag_squared() + self.mag = blocks.complex_to_mag_squared() movingsum_taps = (fft_length//1)*[1.0,] - self.power = gr.fir_filter_fff(1,movingsum_taps) + self.power = filter.fir_filter_fff(1,movingsum_taps) # Get magnitude (peaks) and angle (phase/freq error) - self.c2mag = gr.complex_to_mag_squared() - self.angle = gr.complex_to_arg() - self.compare = gr.sub_ff() + self.c2mag = blocks.complex_to_mag_squared() + self.angle = blocks.complex_to_arg() + self.compare = blocks.sub_ff() - self.sample_and_hold = gr.sample_and_hold_ff() + self.sample_and_hold = blocks.sample_and_hold_ff() #ML measurements input to sampler block and detect - self.threshold = gr.threshold_ff(0,0,0) # threshold detection might need to be tweaked - self.peaks = gr.float_to_char() + self.threshold = blocks.threshold_ff(0,0,0) # threshold detection might need to be tweaked + self.peaks = blocksx.float_to_char() self.connect(self, self.input) @@ -115,11 +125,11 @@ class ofdm_sync_pnac(gr.hier_block2): self.connect(self.peaks, (self,1)) if logging: - self.connect(self.compare, gr.file_sink(gr.sizeof_float, "ofdm_sync_pnac-compare_f.dat")) - self.connect(self.c2mag, gr.file_sink(gr.sizeof_float, "ofdm_sync_pnac-theta_f.dat")) - self.connect(self.power, gr.file_sink(gr.sizeof_float, "ofdm_sync_pnac-inputpower_f.dat")) - self.connect(self.angle, gr.file_sink(gr.sizeof_float, "ofdm_sync_pnac-epsilon_f.dat")) - self.connect(self.threshold, gr.file_sink(gr.sizeof_float, "ofdm_sync_pnac-threshold_f.dat")) - self.connect(self.peaks, gr.file_sink(gr.sizeof_char, "ofdm_sync_pnac-peaks_b.dat")) - self.connect(self.sample_and_hold, gr.file_sink(gr.sizeof_float, "ofdm_sync_pnac-sample_and_hold_f.dat")) - self.connect(self.input, gr.file_sink(gr.sizeof_gr_complex, "ofdm_sync_pnac-input_c.dat")) + self.connect(self.compare, blocks.file_sink(gr.sizeof_float, "ofdm_sync_pnac-compare_f.dat")) + self.connect(self.c2mag, blocks.file_sink(gr.sizeof_float, "ofdm_sync_pnac-theta_f.dat")) + self.connect(self.power, blocks.file_sink(gr.sizeof_float, "ofdm_sync_pnac-inputpower_f.dat")) + self.connect(self.angle, blocks.file_sink(gr.sizeof_float, "ofdm_sync_pnac-epsilon_f.dat")) + self.connect(self.threshold, blocks.file_sink(gr.sizeof_float, "ofdm_sync_pnac-threshold_f.dat")) + self.connect(self.peaks, blocks.file_sink(gr.sizeof_char, "ofdm_sync_pnac-peaks_b.dat")) + self.connect(self.sample_and_hold, blocks.file_sink(gr.sizeof_float, "ofdm_sync_pnac-sample_and_hold_f.dat")) + self.connect(self.input, blocks.file_sink(gr.sizeof_gr_complex, "ofdm_sync_pnac-input_c.dat")) |