FGFS-4.1/gr-air-modes
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HackRF Jawbreaker enhancements -- selectable DC blocking filter improves short

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pkt decoding.
This commit is contained in:
Nick Foster
2013-08-09 15:41:26 -07:00
parent 55559086ac
commit ca58874861
5 changed files with 34 additions and 9 deletions
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11
python/rx_path.py
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@@ -24,7 +24,7 @@ import air_modes_swig
class rx_path(gr.hier_block2):
def __init__(self, rate, threshold, queue, use_pmf=False):
def __init__(self, rate, threshold, queue, use_pmf=False, use_dcblock=False):
gr.hier_block2.__init__(self, "modes_rx_path",
gr.io_signature(1, 1, gr.sizeof_gr_complex),
gr.io_signature(0,0,0))
@@ -36,9 +36,13 @@ class rx_path(gr.hier_block2):
# Convert incoming I/Q baseband to amplitude
self._demod = blocks.complex_to_mag_squared()
# self._dcblock = filter.dc_blocker_ff(128, False)
self._bb = self._demod
if use_dcblock:
self._dcblock = filter.dc_blocker_cc(100*self._spc,True)
self.connect(self, self._dcblock, self._demod)
else:
self.connect(self, self._demod)
self._bb = self._demod
# Pulse matched filter for 0.5us pulses
if use_pmf:
self._pmf = blocks.moving_average_ff(self._spc, 1.0/self._spc)#, self._rate)
@@ -55,7 +59,6 @@ class rx_path(gr.hier_block2):
self._slicer = air_modes_swig.slicer(self._queue)
# Wire up the flowgraph
self.connect(self, self._demod)#, self._dcblock)
self.connect(self._bb, (self._sync, 0))
self.connect(self._bb, self._avg, (self._sync, 1))
self.connect(self._sync, self._slicer)