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
胡一凡 1黄志亮 1张莜燕 1周水红1
作者信息
- 1. 浙江师范大学物理与电子信息工程学院,浙江 金华 321004
- 折叠
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.
Abstract
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 dual-layer 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Key words
polar code/spatial coupling/soft cancellation/belief propagation引用本文复制引用
出版年
2025
NETL
NSTL
万方数据