diff options
Diffstat (limited to 'gr-digital/python/ofdm_sync_pnac.py')
| -rw-r--r-- | gr-digital/python/ofdm_sync_pnac.py | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gr-digital/python/ofdm_sync_pnac.py b/gr-digital/python/ofdm_sync_pnac.py index 10a1259641..a5edc272a8 100644 --- a/gr-digital/python/ofdm_sync_pnac.py +++ b/gr-digital/python/ofdm_sync_pnac.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_pnac(gr.hier_block2): def __init__(self, fft_length, cp_length, kstime, logging=False): """ @@ -59,7 +64,7 @@ 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) @@ -71,7 +76,7 @@ class ofdm_sync_pnac(gr.hier_block2): # Create a moving sum filter for the input self.mag = gr.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() |