diff options
Diffstat (limited to 'gr-digital/python/ofdm_sync_pn.py')
| -rw-r--r-- | gr-digital/python/ofdm_sync_pn.py | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/gr-digital/python/ofdm_sync_pn.py b/gr-digital/python/ofdm_sync_pn.py index 05b1de2e19..8307a8ee14 100644 --- a/gr-digital/python/ofdm_sync_pn.py +++ b/gr-digital/python/ofdm_sync_pn.py @@ -24,6 +24,11 @@ import math from numpy import fft from gnuradio import gr +try: + from gnuradio import filter +except ImportError: + import filter_swig as filter + class ofdm_sync_pn(gr.hier_block2): def __init__(self, fft_length, cp_length, logging=False): """ @@ -51,19 +56,19 @@ class ofdm_sync_pn(gr.hier_block2): # Create a moving sum filter for the corr output if 1: moving_sum_taps = [1.0 for i in range(fft_length//2)] - self.moving_sum_filter = gr.fir_filter_ccf(1,moving_sum_taps) + self.moving_sum_filter = filter.fir_filter_ccf(1,moving_sum_taps) else: moving_sum_taps = [complex(1.0,0.0) for i in range(fft_length//2)] - self.moving_sum_filter = gr.fft_filter_ccc(1,moving_sum_taps) + self.moving_sum_filter = filter.fft_filter_ccc(1,moving_sum_taps) # Create a moving sum filter for the input self.inputmag2 = gr.complex_to_mag_squared() movingsum2_taps = [1.0 for i in range(fft_length//2)] if 1: - self.inputmovingsum = gr.fir_filter_fff(1,movingsum2_taps) + self.inputmovingsum = filter.fir_filter_fff(1,movingsum2_taps) else: - self.inputmovingsum = gr.fft_filter_fff(1,movingsum2_taps) + self.inputmovingsum = filter.fft_filter_fff(1,movingsum2_taps) self.square = gr.multiply_ff() self.normalize = gr.divide_ff() @@ -100,7 +105,7 @@ class ofdm_sync_pn(gr.hier_block2): # Create a moving sum filter for the corr output matched_filter_taps = [1.0/cp_length for i in range(cp_length)] - self.matched_filter = gr.fir_filter_fff(1,matched_filter_taps) + self.matched_filter = filter.fir_filter_fff(1,matched_filter_taps) self.connect(self.normalize, self.matched_filter) self.connect(self.matched_filter, self.sub1, self.pk_detect) |