Re: soft-decision decoding
Hi,
with such DSP, the Koetter-Vardy algorithm is a real challenge!
When I work on it I implement the reliability Matrix with gaussian PDF as it is done by the authors. After, I used Koetter Algorithm for Interpolation and Roth Ruckenstein algorithm for factorisation.
Just for being sure, are you obliged to used the KV algorithm?
There is another soft decision decoding for RS codes which is better in terms of performances. It the algorithm proposed by Jiang and Narayanan.
They have proposed to use a Belief Propagation with and adaptation of the parity matrix of RS codes. It is much better than the KV algorithm. The complexity is still important, but I think it is more easier to reduce it than using the KV.
BR.