一种基于空间耦合的极化码优化方案  

A Polar Code Optimization Scheme Based on Spatial Coupling

作　　者：胡一凡 黄志亮[1] 张莜燕 周水红[1] HU Yifan;HUANG Zhiliang;ZHANG Youyan;ZHOU Shuihong(School of Physics and Electronic Information Engineering,Zhejiang Normal University,Jinhua Zhejiang 321004,China)

机构地区：[1]浙江师范大学物理与电子信息工程学院,浙江金华321004

出　　处：《通信技术》2025年第1期9-13,共5页Communications Technology

摘　　要：空间耦合(Spatial coupling)编码方式常用于低密度奇偶校验码,在使用置信传播(Belief Propagation,BP)译码时阈值可接近最大后验概率。提出了一种极化码优化方案,将空间耦合用于极化码编码,使独立极化码码块之间产生校验关系。此外,使用软消除(Soft Cancellation,SCAN)译码与极化码BP译码的双层译码方案,有效提升了分块传输的短码长空间耦合极化码的译码纠错性能。Spatial coupling encoding is widely used for low-density parity-check codes,and the threshold used in BP(Belief Propagation)decoding can approach the maximum a posteriori probability.A polar code optimization scheme is proposed,in which spatial coupling encoding is used for polar code encoding to generate a checksum relationship between the code blocks of independent polar codes.In addition,a duallayer decoding scheme using SCAN(Soft Cancellation)decoding and polar code BP decoding is employed to effectively improve the decoding error correction performance of short code-length spatial coupling polar codes in block transmission.

关 键 词：极化码 空间耦合 软消除译码 置信传播译码 

分 类 号：TN911.22[电子电信—通信与信息系统]