Design and Implementation of a Novel Algorithm for Iterative Decoding of Product Codes

A novel product code iterative decoding algorithm and its high speed implementation scheme are proposed in this paper.Based on partial combination of selected columns of check matrix,the reduced-complexity syndrome decoding method is proposed to decode sub-codes of product code and deliver soft output information.So iterative decoding of product codes is possible.The fast sorting algorithm and a look-up method are proposed for high speed implementation of this algo-rithm.Compared to the conventional weighing iterative algorithm,the proposed algorithm has lower complexity while offering better performance,which is demonstrated by simulations and implementation analysis.The implementation scheme and verilog HDL simulation show that it is feasible to achieve high speed decoding with the proposed algorithm.     

一种远程智能监控系统通信协议及其实现

剖析了一种用于电讯局动力设备网的远程监控系统通信协议,可用于ＥＩＡ ＲＳ－２３２,ＲＳ－４２２和ＲＳ－４８５串行接口,以通用的Ｖｉｓｕａｌ Ｂａｓｉｃ为开发工具,在Ｗｉｎｄｏｗｓ系统中实现了该通信协议,应用ＶＢ中的串行端口控件,编制出通用的智能监控系统软件,并应用于电讯局柴油发电机组的智能监控网。     

一种基于伴随式的乘积码迭代译码算法

通过改进传统线性分组码的伴随式译码算法，提出了一种低复杂度的列表译码算法，该算法通过组合线性分组码校验矩阵中权重较小的列向量进行译码并正确计算出各码字元素的软输出信息，应用该算法可以构造乘积码迭代译码器，比较其他同类算法，该算法不仅性能较好，适用码型范围较广，而且可以根据具体情况在译码复杂度和译码性能两者之间做出折衷选择，分析和仿真结果表明，该译码算法在误码性能和译码复杂度方面都优于传统的乘积码失代译码算法，能够有效应用于通信系统中实现纠错，具有很大的实际应用价值。