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authorPiotr Krysik <ptrkrysik@gmail.com>2017-06-11 17:39:05 +0200
committerPiotr Krysik <ptrkrysik@gmail.com>2017-06-11 17:39:05 +0200
commitd455c1438a661ccf6887742f3f372d96c6658f82 (patch)
tree1614f25caea433c9507cbc19b23d118e16b16be5 /python/receiver
parent3caf1a76f0a7540e1292623cea4a7b3e51735794 (diff)
Removed wideband_input_adaptor
Diffstat (limited to 'python/receiver')
-rw-r--r--python/receiver/gsm_wideband_input.py122
1 files changed, 0 insertions, 122 deletions
diff --git a/python/receiver/gsm_wideband_input.py b/python/receiver/gsm_wideband_input.py
deleted file mode 100644
index 962d7b0..0000000
--- a/python/receiver/gsm_wideband_input.py
+++ /dev/null
@@ -1,122 +0,0 @@
-#!/usr/bin/env python
-##################################################
-# Gnuradio Python Flow Graph
-# Title: GSM wideband input adaptor
-# Author: Piotr Krysik
-# Co-author: Pieter Robyns
-# Description: Adaptor of input stream for the GSM receiver. Contains frequency ofset corrector doing also resampling to integer multiplies of GSM sample rate and LP filter filtering GSM channel.
-##################################################
-
-from gnuradio import filter
-from gnuradio import gr
-from gnuradio import eng_notation
-from gnuradio.filter import firdes
-import grgsm.arfcn as arfcn
-import grgsm
-
-class gsm_wideband_input(grgsm.hier_block):
- def __init__(self, ppm=0, osr=4, fc=925.2e6, samp_rate_in=20e6, ca=[], band='P-GSM'):
- self.num_streams = len(ca)
- grgsm.hier_block.__init__(
- self, "GSM wideband input adaptor",
- gr.io_signature(1, 1, gr.sizeof_gr_complex*1),
- gr.io_signature(self.num_streams, self.num_streams, gr.sizeof_gr_complex*1),
- )
-
- ##################################################
- # Parameters
- ##################################################
- self.ppm = ppm
- self.osr = osr
- self.fc = fc
- self.samp_rate_in = samp_rate_in
- self.ca = ca
- self.blocks_fir_filters = {}
- self.blocks_resamplers = {}
- self.blocks_ocs = {}
- self.band = band
-
- ##################################################
- # Variables
- ##################################################
- self.samp_rate_out = samp_rate_out = 1625000.0/6.0*osr
-
- ##################################################
- # Blocks
- ##################################################
- self.ppm_in = None
- self.message_port_register_hier_in("ppm_in")
- #self.lpf = firdes.low_pass(1, samp_rate_out, 125e3, 5e3, firdes.WIN_HAMMING, 6.76)
- self.lpf = firdes.low_pass(1, samp_rate_in, 125e3, 75e3, firdes.WIN_HAMMING, 6.76)
- self.gsm_clock_offset_corrector_0 = grgsm.clock_offset_corrector(
- fc=fc,
- ppm=ppm,
- samp_rate_in=samp_rate_in,
- )
-
- center_arfcn = arfcn.downlink2arfcn(fc, band)
- fc_str = eng_notation.num_to_str(fc)
- print("Extracting channels %s, given center frequency at %sHz (ARFCN %d)" % (str(ca), fc_str, center_arfcn))
-
- self.connect((self, 0), (self.gsm_clock_offset_corrector_0, 0))
-
- output_port = 0
- for channel in ca:
- channel_freq = arfcn.arfcn2downlink(channel, band)
- if channel_freq is None:
- print("Warning: invalid ARFCN %d for band %s" % (channel, band))
- continue
- freq_diff = channel_freq - fc
- freq_diff_str = "+" if 0 <= freq_diff else ""
- freq_diff_str += eng_notation.num_to_str(freq_diff)
- print("ARFCN %d is at %sHz %sHz" % (channel, fc_str, freq_diff_str))
-
- self.blocks_resamplers[channel] = filter.fractional_resampler_cc(0, samp_rate_in/samp_rate_out)
- self.blocks_fir_filters[channel] = filter.freq_xlating_fir_filter_ccc(1, self.lpf, freq_diff, samp_rate_in)
- self.connect((self.gsm_clock_offset_corrector_0, 0), (self.blocks_fir_filters[channel], 0))
- self.connect((self.blocks_fir_filters[channel], 0), (self.blocks_resamplers[channel], 0))
- self.connect((self.blocks_resamplers[channel], 0), (self, output_port))
- output_port += 1
-
- ##################################################
- # Asynch Message Connections
- ##################################################
- self.msg_connect(self, "ppm_in", self.gsm_clock_offset_corrector_0, "ppm_in")
-
- def get_ppm(self):
- return self.ppm
-
- def set_ppm(self, ppm):
- self.ppm = ppm
- self.gsm_clock_offset_corrector_0.set_ppm(self.ppm)
-
- def get_fc(self):
- return self.fc
-
- def set_fc(self, fc):
- self.fc = fc
- self.gsm_clock_offset_corrector_0.set_fc(self.fc)
-
- def get_osr(self):
- return self.osr
-
- def set_osr(self, osr):
- self.osr = osr
- self.set_samp_rate_out(1625000.0/6.0*self.osr)
-
- def get_samp_rate_in(self):
- return self.samp_rate_in
-
- def set_samp_rate_in(self, samp_rate_in):
- self.samp_rate_in = samp_rate_in
- for channel in self.blocks_resamplers:
- self.blocks_resamplers[channel].set_resamp_ratio(self.samp_rate_in / self.samp_rate_out)
- self.gsm_clock_offset_corrector_0.set_samp_rate_in(self.samp_rate_in)
-
- def get_samp_rate_out(self):
- return self.samp_rate_out
-
- def set_samp_rate_out(self, samp_rate_out):
- self.samp_rate_out = samp_rate_out
- for channel in self.blocks_resamplers:
- self.blocks_resamplers[channel].set_resamp_ratio(self.samp_rate_in / self.samp_rate_out)