一种利用多重偏置的RS码软判译码算法

摘要

为了提高RS码的纠错性能,本文将基于盒匹配译码算法(BMA)的多重偏置与自适应置信传播算法(ABP)进行级联,提出了一种利用多重偏置基于可信度迭代的RS码软判译码算法,称为ABP-BIAS-BMA,并将其与传统的基于自适应置信传播的级联算法ABP-BMA及自适应置信传播算法ABP进行了译码性能仿真比较.仿真结果表明,提出的ABP-BIAS-BMA算法比ABP-BMA及ABP的译码性能要好,特别在相同信噪比情况下算法整体平均迭代次数较小.%To improve the error-correcting performance, an iterative reliability-based soft decision decoding algorithm of Reed-Solomon (RS) codes with multiple biases is proposed, called ABP-BIAS-BMA, in this paper. It concatenates multiple biases, which are based on box and match decoding algorithm (BMA), with the adaptive belief propagation (ABP). Performance simulations and comparisions are done among the proposed ABP-BIAS-BMA , ABP and conventional serial concatenation algorithm of ABP and BMA (ABP-BMA). Simulation results show that the proposed ABP-BIAS-BMA algorithm is superior to the conventional ABP-BMA and ABP, especially with lower average number of iterations of the same SNR totally.