Re: gr-trellis : problem in using viterbi decoder

I also realized that the way you call
gr_make_vector_source_s(in_bits,false,K );
is incorrect.
I think you have misunderstood what this block does.

You should use:
gr_make_vector_source_s(in_bits,false,1 );
or simply
and you really don’t need the vector2stream block.


In your code the “encoder” block is not connected to any other block…

It should be:

info bits -> encoder -> modulator -> channel -> metrics -> viterbi


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