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From: | John Malsbury |
Subject: | Re: [Discuss-gnuradio] problem with packet decoder for gmsk |
Date: | Fri, 28 Mar 2014 00:12:48 -0700 |
Also, once you're through with this experiment, you might consider using gr-mac, which provides similar functionality. Balint and I have been hacking on it late tonight, you can find the latest here:
https://github.com/balint256/gr-mac
Also, a known working version that is a bit older and less bleeding edge:
https://github.com/jmalsbury/gr-mac
http://conferences.sigcomm.org/sigcomm/2013/papers/srif/p31.pdf
-John
On 03/26/2014 12:30 PM, Ank wrote:There are a lot of things that can go wrong in this setup. Maybe the
> Hello all,
> I'm working on gmsk transmitter and receiver past 6 months , the problem
> that I'm facing is in the packet decoder.
>
> I tried with wav file and signal source it worked good.
>
> my block is of this type
>
>
> Random_source=>Packet_encoder=>gmsk_modulator=>rational_resamlper_1=>uhd_sink
>
>
> uhd_source=>rational_resampler_2=>low_pass_filter=>gmsk_demodulator=>packet_decoder=>scope_sink/file_sink
sync is not locking fast enough, and destroying the preamble. It's hard
for us to figure this out from a distance.
Try replacing the UHDs with a channel model, and go crazy with that. See
what happens.
M
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