Re: [Discuss-gnuradio] [GSoC] FEC Update

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Hey all,

GSoC14 is coming to an end. So one final update before the "pencils
down" date.
Max-Log-Map decoder is finished. Code is available on my Github[1].
More Info in my blog[2].
So now it is time for code cleanup and documentation.

GSoC14 was fun and I'm looking forward to GRCON now :)

Best
- -Jan
[1] https://github.com/spectrejan
[2] http://spectrejan.blogspot.de/
On 16.07.2014 13:51, Jan Krämer wrote:
> 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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