[Commit-gnuradio] gnuradio-core/src/python/gnuradio/blksimpl gmsk...

[Eric Blossom]

CVSROOT:        /sources/gnuradio
Module name:    gnuradio-core
Changes by:     Eric Blossom <eb>       06/06/20 03:48:37

Modified files:
        src/python/gnuradio/blksimpl: gmsk2.py 

Log message:
        removed freq offset tracking.  Possible problem with single_pole_iir_ff

CVSWeb URLs:
http://cvs.savannah.gnu.org/viewcvs/gnuradio-core/src/python/gnuradio/blksimpl/gmsk2.py?cvsroot=gnuradio&r1=1.4&r2=1.5

Patches:
Index: gmsk2.py
===================================================================
RCS file: 
/sources/gnuradio/gnuradio-core/src/python/gnuradio/blksimpl/gmsk2.py,v
retrieving revision 1.4
retrieving revision 1.5
diff -u -b -r1.4 -r1.5
--- gmsk2.py    30 May 2006 05:59:29 -0000      1.4
+++ gmsk2.py    20 Jun 2006 03:48:37 -0000      1.5
@@ -132,12 +132,15 @@
        # Low pass the output of fmdemod to allow us to remove
        # the DC offset resulting from frequency offset
 
-       alpha = 0.0002   # FIXME, maybe 0.0008/spb
-       self.freq_offset = gr.single_pole_iir_filter_ff(alpha)
-       self.sub = gr.sub_ff()
+       #alpha = 0.0002   # FIXME, maybe 0.0008/spb
+        alpha = 0.0008
+       #alpha = 0.0020   # FIXME, maybe 0.0008/spb
+       #alpha = 0.0080   # FIXME, maybe 0.0008/spb
+       #self.freq_offset = gr.single_pole_iir_filter_ff(alpha)
+       #self.sub = gr.sub_ff()
 
-       fg.connect(self.fmdemod, (self.sub, 0))
-       fg.connect(self.fmdemod, self.freq_offset, (self.sub, 1))
+       #fg.connect(self.fmdemod, (self.sub, 0))
+       #fg.connect(self.fmdemod, self.freq_offset, (self.sub, 1))
 
        # the clock recovery block tracks the symbol clock and resamples as 
needed.
        # the output of the block is a stream of soft symbols (float)
@@ -147,7 +150,12 @@
         # slice the floats at 0, outputting 1 bit (the LSB of the output byte) 
per sample
         self.slicer = gr.binary_slicer_fb()
         
-       fg.connect(self.sub, self.clock_recovery, self.slicer)
+       #fg.connect(self.sub, self.clock_recovery, self.slicer)
+       fg.connect(self.fmdemod, self.clock_recovery, self.slicer)
+
+        if 0:
+            #fg.connect(self.freq_offset, gr.file_sink(gr.sizeof_float, 
'freq_offset.dat'))
+            fg.connect(self.fmdemod, gr.file_sink(gr.sizeof_float, 
'demod.dat'))
 
        # Initialize base class
        gr.hier_block.__init__(self, fg, self.fmdemod, self.slicer)