5G控制信道极化码的研究  

Survey of Polar Codes for Control Channels in 5G

作　　者：吴湛击[1] 吴熹[1] WU Zhan-ji;WU Xi(School of Information and Communication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]北京邮电大学信息与通信工程学院

出　　处：《北京邮电大学学报》2018年第4期110-118,共9页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(61171101);中央高校基本科研经费项目

摘　　要：极化码是第五代移动通信（5G）的重要信道编码,是被用于增强移动宽带场景控制信道的纠错编码.TS 38.212协议规定的5G-Polar码存在3种码字结构,但没有给出设计的原因和对应的译码方法.为此,介绍了5G-Polar码的可靠性序列设计方法和速率匹配方法,并分析了不同类型的码字构造原理、关键特征及相应的译码算法.通过对不同结构类型Polar码的性能和复杂度的对比,分析了各种结构类型的适用条件及原因.同时,通过仿真定量地给出了5G-Polar码在短码条件下相比于LTE TBCC和5G-LDPC码的性能优势.Polar codes are important channel coding for the fifth generation mobile communication（ 5 G）,which are already used for control channels for enhance mobile broadband（ e MBB） scenarios. At present,the 5 G-polar codes specified in the 3 GPP TS 38. 212 standard have three code structures,but the design reasons and corresponding decoding methods have not been given yet. Firstly,the reliability sequence design and rate-matching method are introduced,and then the principle,the key feature and the decoding algorithm of every code structure are analyzed. Through the performance and complexity comparison analysis of three kinds of polar codes,the applicable condition and reason for each code structure are detailed. At the same time,the performance advantages of the short-size 5 G-polar codes over LTE TBCC and 5 G-LDPC codes are given quantitatively by computer simulations.

关 键 词：极化码 增强移动宽带 速率匹配 分布式循环冗余校验 

分 类 号：TN911.22[电子电信—通信与信息系统]