[Discuss-gnuradio] [GSoC] FEC Update

[Jan Krämer]

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Hey all,

I have some updates for you too.
After some evaluations with my mentors, I started from scratch and
wrote my own OOT module gr-celec which now contains a working rate 1/n
Viterbi Decoder which can have as many states as it wants. If it has
more than 8 it can also use SSE kernels :D

Results are far better than my efforts to speed up the existing
gr-trellis.

Complex full euclidean branch metrics with SSE4.1 are approx 4x faster
than the generic kernels, and Viterbi Path Update kernels with SSE4.1
are approx 3x faster than the generic ones. I am quite satisfied with
these results.

You can learn a bit more about it on my blog
http://spectrejan.blogspot.de/

Now I have to do some cosmetics to gr-trellis/examples and then start
on the Log-MAP Decoder.

Regards,
Jan
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