diff options
Diffstat (limited to 'gnuradio-examples/python/dect/dect_receiver.py')
| -rw-r--r-- | gnuradio-examples/python/dect/dect_receiver.py | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/gnuradio-examples/python/dect/dect_receiver.py b/gnuradio-examples/python/dect/dect_receiver.py deleted file mode 100644 index 89e60c949..000000000 --- a/gnuradio-examples/python/dect/dect_receiver.py +++ /dev/null @@ -1,80 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2007 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, optfir, blks2 -from usrp_source import usrp_source_c - -_dect_symbol_rate = 1.152e6 -_dect_occupied_bandwidth = _dect_symbol_rate * 1.03 # BT=0.5 -_dect_channel_bandwidth = 1.728e6 - -# Top-level hierarchical block that implements DECT demodulation and -# decoding. -class dect_receiver(gr.top_block): - def __init__(self, options): - gr.top_block.__init__(self, "dect_receiver") - self._options = options - - # Need greater than 2 samples per symbol. This makes a decimation - # rate of 26 and a samples per symbol of 2.136752 - if_rate = 2.461538e6 - self._usrp = usrp_source_c(which=0, - subdev_spec=options.rx_subdev_spec, - if_rate=if_rate, - gain=options.gain, - freq=options.freq, - calibration=options.calibration, - verbose=options.verbose) - - # Filter baseband to 1.186 MHz passband, 1.728 MHz stopband - chan_taps = optfir.low_pass(1.0, # Gain - if_rate, # Sample rate - _dect_occupied_bandwidth/2, # One sided modulation bandwidth - _dect_channel_bandwidth/2, # One sided channel bandwidth - 1.0, # Passband ripple (db) - 60) # Stopband attenuation (db) - if self._options.verbose: - print "Channel filter has", len(chan_taps), "taps" - self._channel_filter = gr.freq_xlating_fir_filter_ccf(1, # Decimation rate - chan_taps, # Filter taps - 0.0, # Offset frequency - if_rate) # Sample rate - - self._demod = blks2.gmsk_demod(samples_per_symbol=if_rate/_dect_symbol_rate, - verbose=options.verbose) - - self._sink = gr.null_sink(gr.sizeof_char) - self.connect(self._usrp, self._channel_filter, self._demod, self._sink) - - # Log baseband to file if requested - if options.log_baseband is not None: - if options.verbose: - print "Logging baseband to file", options.log_baseband - self.baseband_log = gr.file_sink(gr.sizeof_gr_complex, options.log_baseband) - self.connect(self._channel_filter, self.baseband_log) - - # Log demodulator output to file if requested - if options.log_demod is not None: - if options.verbose: - print "Logging demodulator to file", options.log_demod - self.demod_log = gr.file_sink(gr.sizeof_char, options.log_demod) - self.connect(self._demod, self.demod_log) |