逐位、逐字最佳算法的组合

A hybrid soft decision decoding algorithm

本文提出了一种将逐位最佳算法与 Chase.2算法相结合的软判决译码算法。在信噪比较高的情况下,该算法的性能不劣于所采用的逐位最佳算法,并可克服 Chase.2算法的试探序列的个数随最小汉明码距指数增长的弊病。

A hybrid soft decision decoding algorithm combining Chase.2 algotithm withbit-by-bit soft decision decoding algorithm is presented.For higher signal to noise ratios,its behavior is not inferior to that of the corresponding bit-by-bit decoding algorithm.And this algorithm can overcome the exponential increase of the number of the trial se-quences in Chase.2 algorithm,as the minimum Hamming distance increases.