Low Complexity Soft-Decision Sequential Decoding Using Hybrid Permutation for Reed-Solomon Codes

  • Min-seok Oh
  • Peter Sweeney
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1746)


We present a soft-decision decoding method for Reed-Solomon codes (RS codes) using both cyclic and squaring permutations. These permutations are used to provide a convenient sequence which is predicted to have relatively low complex error pattern with respect to a modified Fano sequential algorithm[1]. In order to preserve bit-level soft-decision values, each sequence of those permutation groups must keep equal weight distribution in symbol and bit level. Trellis construction is based on Wolf’s method[2] and a binary systematic parity check matrix of RS codes is used for bit-level decoding[9]. In simulation results, it is shown that a hybrid of those two permutations can be used for low complexity decoding approaching maximum likelihood performance.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1999

Authors and Affiliations

  • Min-seok Oh
    • 1
  • Peter Sweeney
    • 2
  1. 1.CCSR, University of SurreySurreyUK
  2. 2.CCSR, University of SurreySurreyUK

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