基于码长近似度的极化码性能分析  

Polar codes′ performance analysis based on code length approximation degree

作　　者：叶铭 李晖[1] 童强 张瑞清 YE Ming;LI Hui;TONG Qiang;ZHANG Ruiqing(College of Information Science and Technology,Hainan University,Haikou 570228,China)

机构地区：[1]海南大学信息科学技术学院

出　　处：《现代电子技术》2019年第11期24-27,共4页Modern Electronics Technique

基　　金：国家自然科学基金项目(61661018);科技部国际合作专项(2015DFR10510);海南省重点研发计划项目(ZDYF2016010,ZDYF2018012)~~

摘　　要：极化码是未来5G通信中的控制信道编码方案。针对码长类型不同的极化码之间的码长不等性和距离谱性能分析的不确定性等难点问题,提出一种基于码长近似度的极化码性能分析方法。该方法能根据码长近似度直接评估基于2×2核矩阵G2和l×l多维核矩阵Gl的极化码的性能。实际情况和仿真结果都表明:基于2×2核矩阵G2的极化码比基于3×3核矩阵G3的极化码具有更好的误比特率和误帧率性能;码长近似度越大,所提方法极化码性能分析的精度越高。Polar codes coding scheme is a kind of channel-controlling coding scheme for future 5G communication.In allusion to the difficulties of the inequality of code lengths between polar codes with different code length types and uncertainty of distance spectrum performance analysis,a performance analysis method of the polar codes is proposed,which is based on code length approximation degree(CLAD).The performances of polar codes based on 2×2 kernel matrix G2 and l×l multidimensional kernel matrix Gl are evaluated directly according to CLAD.The actual situation and simulation results show that the polar codes based on 2×2 kernel matrix G2 have higher performances in the aspects of bit error rate(BER)and frame error rate(FER)than polar codes based on 3×3 kernel matrix G3.The experimental results demonstrate that the greater the code length approximation degree is,the higher the analysis accuracy of the polar codes performance is.

关 键 词：极化码 码长近似度 多维核矩阵 距离谱 信道编码 误码率 误帧率 

分 类 号：TN919.31-34[电子电信—通信与信息系统] TN911.7[电子电信—信息与通信工程]