Soft Decision Decoding for Multilevel Codes with Different Mapping Strategies in Fading Channels

SUI Ai-fen; YUAN Dong-feng; Deng Suo-yun; YANG Yi-xian

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Soft Decision Decoding for Multilevel Codes with Different Mapping Strategies in Fading Channels

更新时间：2025-07-16

- Soft Decision Decoding for Multilevel Codes with Different Mapping Strategies in Fading Channels
- Acta Electronica Sinica Vol. 30, Issue 7, Pages: 1044-1047(2002)
- 作者机构：
  
  1. 北京邮电大学信息安全中心126#,北京,100876
  2. 山东大学电子工程系,山东,济南,250100
  3. 北京邮电大学信息安全中心126#北京,100876
  4. 山东大学电子工程系山东济南,250100
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911
- Published Online：25 July 2002，
  
  Published：2002
- 稿件说明：
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SUI Ai-fen, YUAN Dong-feng, Deng Suo-yun, et al. Soft Decision Decoding for Multilevel Codes with Different Mapping Strategies in Fading Channels[J]. Acta Electronica Sinica, 2002, 30(7): 1044-1047.
DOI：

SUI Ai-fen, YUAN Dong-feng, Deng Suo-yun, et al. Soft Decision Decoding for Multilevel Codes with Different Mapping Strategies in Fading Channels[J]. Acta Electronica Sinica, 2002, 30(7): 1044-1047. DOI：

摘要

研究Rayleigh衰落信道下

软判决译码对三种不同映射方案多级编码系统性能的影响.基于信道容量规则

构造卷积码为分量码的8ASK多级编码系统

在多阶段译码中提出利用信道状态信息的软判决支路度量计算公式

并探讨系统的误码传播特性

研究结果可为衰落信道编码调制方案的最佳设计度量提供参考.

Abstract

This paper focuses on the influence of soft decision decoding on multilevel coding (MLC) schemes with different mapping strategies over Rayleigh fading channels.Based on Capacity Rule

8ASK MLC systems are constructed using punctured convolutional codes.The formulations for computing the soft decision metrics with Channel State Information (CSI) are presented for multistage decoding (MSD) and the performance comparisons are made for soft- and hard-decision.The error propagation resulted from the lower level is also discussed.The results can present some references for the optimal design of MLC in fading channels.

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