diff options
Diffstat (limited to 'gr-digital/examples/example_timing.py')
| -rwxr-xr-x | gr-digital/examples/example_timing.py | 43 |
1 files changed, 32 insertions, 11 deletions
diff --git a/gr-digital/examples/example_timing.py b/gr-digital/examples/example_timing.py index fd86acfb16..d51aebb31d 100755 --- a/gr-digital/examples/example_timing.py +++ b/gr-digital/examples/example_timing.py @@ -1,6 +1,26 @@ #!/usr/bin/env python - -from gnuradio import gr, digital +# +# Copyright 2011,2012 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 3, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 51 Franklin Street, +# Boston, MA 02110-1301, USA. +# + +from gnuradio import gr, digital, filter from gnuradio import eng_notation from gnuradio.eng_option import eng_option from optparse import OptionParser @@ -24,27 +44,27 @@ class example_timing(gr.top_block): foffset, toffset, poffset, mode=0): gr.top_block.__init__(self) - rrc_taps = gr.firdes.root_raised_cosine( + rrc_taps = filter.firdes.root_raised_cosine( sps, sps, 1.0, rolloff, ntaps) gain = 2*scipy.pi/100.0 nfilts = 32 - rrc_taps_rx = gr.firdes.root_raised_cosine( + rrc_taps_rx = filter.firdes.root_raised_cosine( nfilts, sps*nfilts, 1.0, rolloff, ntaps*nfilts) data = 2.0*scipy.random.randint(0, 2, N) - 1.0 data = scipy.exp(1j*poffset) * data self.src = gr.vector_source_c(data.tolist(), False) - self.rrc = gr.interp_fir_filter_ccf(sps, rrc_taps) - self.chn = gr.channel_model(noise, foffset, toffset) - self.off = gr.fractional_interpolator_cc(0.20, 1.0) + self.rrc = filter.interp_fir_filter_ccf(sps, rrc_taps) + self.chn = filter.channel_model(noise, foffset, toffset) + self.off = filter.fractional_interpolator_cc(0.20, 1.0) if mode == 0: - self.clk = gr.pfb_clock_sync_ccf(sps, gain, rrc_taps_rx, - nfilts, nfilts//2, 3.5) - self.taps = self.clk.get_taps() - self.dtaps = self.clk.get_diff_taps() + self.clk = digital.pfb_clock_sync_ccf(sps, gain, rrc_taps_rx, + nfilts, nfilts//2, 3.5) + self.taps = self.clk.taps() + self.dtaps = self.clk.diff_taps() self.vsnk_err = gr.vector_sink_f() self.vsnk_rat = gr.vector_sink_f() @@ -164,6 +184,7 @@ def main(): for i,d in enumerate(diff_taps): D = 20.0*scipy.log10(abs(fftpack.fftshift(fftpack.fft(d, 10000)))) + #D = 20.0*scipy.log10(abs(scipy.fft(d, 10000))) s31.plot(t[i::nfilts].real, d, "-o") s32.plot(D) |