From 5c071b07710d2c4e127d321faba59b2a7b1d7c8d Mon Sep 17 00:00:00 2001
From: jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5>
Date: Sun, 14 Sep 2008 18:37:08 +0000
Subject: Adds frequency accessor for Costas loop, BERT receiver displays
frequency and timing offset
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@9576 221aa14e-8319-0410-a670-987f0aec2ac5
---
.../python/digital-bert/benchmark_rx.py | 22 ++++++++++++++--------
1 file changed, 14 insertions(+), 8 deletions(-)
(limited to 'gnuradio-examples/python/digital-bert/benchmark_rx.py')
diff --git a/gnuradio-examples/python/digital-bert/benchmark_rx.py b/gnuradio-examples/python/digital-bert/benchmark_rx.py
index 96bf7fa12d..1e00dbd762 100755
--- a/gnuradio-examples/python/digital-bert/benchmark_rx.py
+++ b/gnuradio-examples/python/digital-bert/benchmark_rx.py
@@ -39,8 +39,8 @@ class status_thread(_threading.Thread):
def run(self):
while not self.done:
- print "Magnitude: %5.3f Variance: %5.3f Estimated SNR: %4.1f dB BER: %g" % (
- tb.mag(), tb.var(), tb.snr(), tb.ber())
+ print "Freq. Offset: %5.0f Hz Timing Offset: %5.1f ppm Estimated SNR: %4.1f dB BER: %g" % (
+ tb.frequency_offset(), tb.timing_offset()*1e6, tb.snr(), tb.ber())
try:
time.sleep(1.0)
except KeyboardInterrupt:
@@ -104,6 +104,12 @@ class rx_bpsk_block(gr.top_block):
def ber(self):
return self._receiver.ber()
+
+ def frequency_offset(self):
+ return self._receiver.frequency_offset()
+
+ def timing_offset(self):
+ return self._receiver.timing_offset()
def get_options():
parser = OptionParser(option_class=eng_option)
@@ -122,17 +128,17 @@ def get_options():
help="Select USRP decimation rate (default=%default)")
parser.add_option("", "--excess-bw", type="eng_float", default=0.35,
help="Select RRC excess bandwidth (default=%default)")
- parser.add_option("", "--costas-alpha", type="eng_float", default=0.2,
+ parser.add_option("", "--costas-alpha", type="eng_float", default=0.05,
help="set Costas loop 1st order gain, (default=%default)")
- parser.add_option("", "--costas-beta", type="eng_float", default=0.01,
+ parser.add_option("", "--costas-beta", type="eng_float", default=0.00025,
help="set Costas loop 2nd order gain, (default=%default)")
- parser.add_option("", "--costas-max", type="eng_float", default=0.005,
+ parser.add_option("", "--costas-max", type="eng_float", default=0.05,
help="set Costas loop max freq (rad/sample) (default=%default)")
- parser.add_option("", "--mm-gain-mu", type="eng_float", default=0.2,
+ parser.add_option("", "--mm-gain-mu", type="eng_float", default=0.001,
help="set M&M loop 1st order gain, (default=%default)")
- parser.add_option("", "--mm-gain-omega", type="eng_float", default=0.01,
+ parser.add_option("", "--mm-gain-omega", type="eng_float", default=0.000001,
help="set M&M loop 2nd order gain, (default=%default)")
- parser.add_option("", "--mm-omega-limit", type="eng_float", default=0.005,
+ parser.add_option("", "--mm-omega-limit", type="eng_float", default=0.0001,
help="set M&M max timing error, (default=%default)")
--
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