---------- Forwarded message ----------
From: Achilleas Anastasopoulos <anas...@umich.edu>
Date: Thu, Aug 19, 2010 at 4:19 AM
Subject: Re: [Discuss-gnuradio] gr-trellis: convenc and viterbi with
own mapper/de-mapper
To: jonas.boer...@rwth-aachen.de


Jonas,

there is a very extensive doc file in gr-trellis that hopefully
answers your questions,
as well as a lot of examples.
Please read it and let me know if you still have questions about it.
BTW: your issue has nothing to do with truncation as was suggested in a reply.

In short: one way to implement your system is to mapp the encoded
symbols directly to
QPSK symbols (essentially this is what you are doing!) and thus
produce 5 demodulated symbols
that you will feed in the VA.

Achilleas

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