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

[Jan Krämer]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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
> 
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1

iQEcBAEBAgAGBQJT5JCtAAoJEJmPbVa7qwgjQ74IAIrehr8lt/0n+OFoC5Wi5Nww
sku/VAwv55dK6hoMpu22aMHncX8pgDXJ2VQJ6HhKHdhm/mBR1X7NJ7aqQ13pFNVQ
2KVb9B+Oxh33Bi3ANVyAt78t6gqtkB6ilp/3rNYSJHw2WFV/JowYLHOANulypJsr
NzUQgBj101QP/nSrbyrjnvgvGnB/LPGWZFyZVQIyUQTULiCTaxpLAi1Dp8qGu4fy
Lw1nLAVi4ddbS1D/dQ8GCq5uy29i8gnbvNSNjxU0G/Qmjqhr3Ui23scR/sM6C2Sf
hamR2dpXDfsPR2Q64SLKG2YHtOiqpICqYKBGv1E3hXa1EShgLXTrZBdqh6ZIYks=
=L9Lz
-----END PGP SIGNATURE-----