Re: [Discuss-gnuradio] problem with packet decoder for gmsk

[Martin Braun]

On 03/26/2014 12:30 PM, Ank wrote:
> 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

There are a lot of things that can go wrong in this setup. Maybe the
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