Soft Decision Decoding for Convolutional Codes in Fading Channels

SUI Ai-fen; YUAN Dong-feng; Li Zuo-wei; YANG Yi-xian

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Soft Decision Decoding for Convolutional Codes in Fading Channels

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- Soft Decision Decoding for Convolutional Codes in Fading Channels
- Acta Electronica Sinica Vol. 29, Issue 6, Pages: 849-852(2001)
- 作者机构：
  
  1. 北京邮电大学信息工程学院,北京,100876
  2. 山东大学电子工程系,山东,济南,250100
  3. 北京邮电大学信息工程学院北京,100876
  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： TN919.3+2
- Published：2001
- 稿件说明：
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SUI Ai-fen, YUAN Dong-feng, Li Zuo-wei, et al. Soft Decision Decoding for Convolutional Codes in Fading Channels[J]. Acta Electronica Sinica, 2001, 29(6): 849-852.
DOI：

SUI Ai-fen, YUAN Dong-feng, Li Zuo-wei, et al. Soft Decision Decoding for Convolutional Codes in Fading Channels[J]. Acta Electronica Sinica, 2001, 29(6): 849-852. DOI：

摘要

本文将交织、信道输出软信息、信道特征软信息相结合

研究Rayleigh衰落信道下卷积码的Viterbi软判决译码

在利用和不利用信道状态信息(CSI)两种情况下给出软判决的支路度量计算公式和性能仿真结果

计算了卷积码的性能上界;研究了解调器输出量化门限(量化级数目、量化间距)对译码性能的影响.结果与硬判决译码及AWGN信道的相关结论进行了比较.

Abstract

The paper investigates the performance of soft decision Viterbi decoding for convolutional codes in Rayleigh fading channels by using a new scheme that combines interleaving technique

soft output of the channel and the information about the channel.The formulations for computing the soft decision metrics with or without Channel State Information (CSI) are presented and the performance gains are demonstrated.In addition

we discuss the influences of quantizer thresholds on the decoding performance.The results are compared with the corresponding conclusions in AWGN channels.

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