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[Commit-gnuradio] r4011 - gnuradio/trunk/gnuradio-core/src/python/gnurad
From: |
trondeau |
Subject: |
[Commit-gnuradio] r4011 - gnuradio/trunk/gnuradio-core/src/python/gnuradio/blksimpl |
Date: |
Tue, 21 Nov 2006 11:18:24 -0700 (MST) |
Author: trondeau
Date: 2006-11-21 11:18:24 -0700 (Tue, 21 Nov 2006)
New Revision: 4011
Modified:
gnuradio/trunk/gnuradio-core/src/python/gnuradio/blksimpl/dqpsk.py
Log:
fixed typo in beta value for qpsk demod
Modified: gnuradio/trunk/gnuradio-core/src/python/gnuradio/blksimpl/dqpsk.py
===================================================================
--- gnuradio/trunk/gnuradio-core/src/python/gnuradio/blksimpl/dqpsk.py
2006-11-21 17:31:05 UTC (rev 4010)
+++ gnuradio/trunk/gnuradio-core/src/python/gnuradio/blksimpl/dqpsk.py
2006-11-21 18:18:24 UTC (rev 4011)
@@ -245,7 +245,7 @@
costas_order = 4
# The value of beta is now set to be underdamped; this value can have
a huge impact on the
# performance of QPSK. Set to 0.25 for critically damped or higher for
underdamped responses.
- beta = .5 0 * self._costas_alpha * self._costas_alpha
+ beta = .35 * self._costas_alpha * self._costas_alpha
self.costas_loop = gr.costas_loop_cc(self._costas_alpha, beta, 0.02,
-0.02, costas_order)
# RRC data filter
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