一种带有交织器的Polar码串行级联算法研究  

Research on Polar code serial cascading algorithm with interleaver

作　　者：陆艳铭 方勇[1] LU Yanming;FANG Yong(School of Information Engineering, Northwest A＆F University, Yangling 712100, China)

机构地区：[1]西北农林科技大学信息工程学院,陕西杨陵712100

出　　处：《现代电子技术》2018年第12期71-74,共4页Modern Electronics Technique

基　　金：国家自然科学基金项目资助:算术码码谱及其应用研究(61271280)~~

摘　　要：Polar码是较新提出的一种理论上能够达到香农极限的信道编码,但其在中短码字译码性能不如LDPC码。为了让Polar码达到更好的译码性能,文中主要采用将Polar码、块交织器和LDPC码进行串行级联的方法来提高译码性能。在高斯信道环境下对这种级联码的仿真结果表明,码长、码率相同的情况下,这种级联码的译码性能优于单独的Polar码、LDPC码和不带有交织器的Polar-LDPC级联码的译码性能。Polar code is a relative new channel coding that can achieve the Shannon limit theoretically,but its performance is not as good as that of LDPC codes in decoding middle and short codewords. The method of cascading the Polar code,block interleaver and LDPC code serially is adopted in this paper to make the Polar code achieve better decoding performance.The simulation was carried out for the concatenated code in the Gauss channel environment. The results show that the decoding performance of the concatenated code is better than that of the sole Polar code,LDPC code,and Polar-LDPC concatenated code without interleaver when the code length and code rate are the same.

关 键 词：Polar码 LDPC码 交织器 串行级联 信道编码 译码性能 

分 类 号：TN911.22[电子电信—通信与信息系统]