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[Discuss-gnuradio] Carrier Sensing only in gr_packet_sink?

From: Marius
Subject: [Discuss-gnuradio] Carrier Sensing only in gr_packet_sink?
Date: Fri, 25 May 2012 10:32:34 +0200


I have a short question: in my implementation of a state machine to
implement a parser for a MAC sublayer standard (802.15.4) I used a
Sync-Block. Now I found out that carrier_sense() is only in
gr_packet_sink class. Does this make sense at all? Normally I'd apply
some Carrier Sensing right before modulation, mostly to avoid blocks
wasting performance on iterating over noise. I'm aware that a Squelch
Filter might archive a similar effect, but that still means the other
Signal Block go into general_work() routines.
So, why is carrier_sense() not in gr_sync_block etc.?


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