On the equivalence of Sudan-decoding and decoding via virtual extension to an interleaved Reed-Solomon code

In this paper we investigate two new decoding schemes for Reed-Solomon codes, which allow to decode beyond half the minimum distance. One is Sudan´s list-decoding principle, based on interpolation with a degree-restricted bivariate polynomial. We show a syndrome-based approach of it. We compare Sudan´s procedure with a scheme that is based on an extension to Interleaved Reed-Solomon codes. We present theoretical parallels and outline both algorithms in a unique comparable way. Furthermore, we show the connection of both schemes to the classical linear feedback shift register analysis. Afterwards, we compare the performance of the considered schemes.