乘积码译码算法研究与仿真实现

Study and Simulation on Decoding Algorithm of Product Codes

简要介绍了构成乘积码的分量码的Chase2译码算法,并对算法中关于测试图样的产生方法进行了改进,提出了一种可以快速进行伴随式计算的测试图样构造方法,根据计算所得伴随式给出了一种带偶校验的测试序列的硬判决译码方法。把改进后的Chase2译码算法应用到乘积码的迭代译码中,并进行了仿真研究,对不同迭代次数的译码结果进行了分析比较,当迭代次数增加时,译码性能逐渐改善。

The Chase2 decoding algorithm of the component codes are analyzed on product codes. The method of building the test pattern is modified based on Chase2 decoding algorithm. The speed of caculating the syndrome is accelerated because of the modification. Based on the syndrome, one hard decoding mothod with even check is presented. The simulation is done based on the modified Chase2 decoding algorithm, and the decoding results of different iterations times are discussed. With increase of the iterative time, th...