Hi Emanuel, Maybe you find following thread useful.
http://lists.gnu.org/archive/html/discuss-gnuradio/2015-09/msg00404.html -- Usman On Wed, Mar 22, 2017 at 1:07 PM, <[email protected]> wrote: > Hi together, > > > > I’m using the FEC Async Encoder with the CC Encoder Definition. > Input/Output are unpacked and I use the terminated behavior. In Gnuradio > the polynomials for the CC Encoder Definition are defined on a base of 10, > and not as octals like in MATLAB, right? > > > > I tried the following: 1 bit with ‘1’ as input to the FEC Async Encoder > and the same in MATLAB to check the response of the encoder. The results > don’t match. No matter if I use different constraint lengths, rates or > polynomials. > > e.g. in Matlab: K = 7, 1/R=2, Polynomials (octal) [171,133] and Gnuradio > Polynomials (10-base) [121,91] give completely different outputs. > > > > No matter what I do, e.g., using octal representation in Gnuradio, or > changing the polynomials’ positions in the specified vector, gives me a > result which matches. > > > > Did anyone compare results before? Any clues? > > Regards, > > Emanuel > > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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