Some Soft-Decision Decoding Algorithms for Reed-Solomon Codes
In this paper we introduce three soft-decision decoding algorithms for Reed-Solomon (RS) codes. We compare them in terms of performance over both the AWGN and Rayleigh Fading Channels and in terms of complexity with a special emphasis on RS codes over IF16. The algorithms discussed are variants of well known algorithms for binary codes adapted to the multilevel nature of RS codes. All involve a re-ordering of the received symbols according to some reliability measure. The choice of reliability measure for our simulations is based on a comparison of three in terms of how they affect the codes’ performances.
KeywordsRayleigh Fading Channel Viterbi Algorithm AWGN Channel Linear Block Code Receive Word
Unable to display preview. Download preview PDF.
- 6.Stichtenoth, H.: Algebraic function fields and codes. Springer-Verlag, 1993Google Scholar