Iterative Decision Feedback Equalizer for Coded ISI Channels

WU Xiao-fu; LING Cong; LU Jing

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Iterative Decision Feedback Equalizer for Coded ISI Channels

更新时间：2025-07-16

- Iterative Decision Feedback Equalizer for Coded ISI Channels
- Acta Electronica Sinica Vol. 29, Issue 9, Pages: 1192-1194(2001)
- 作者机构：
  
  南京通信工程学院卫星通信重点实验室,江苏,南京,210016
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN914.5
- Published：2001
- 稿件说明：
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WU Xiao-fu, LING Cong, LU Jing. Iterative Decision Feedback Equalizer for Coded ISI Channels[J]. Acta Electronica Sinica, 2001, 29(9): 1192-1194.
DOI：

WU Xiao-fu, LING Cong, LU Jing. Iterative Decision Feedback Equalizer for Coded ISI Channels[J]. Acta Electronica Sinica, 2001, 29(9): 1192-1194. DOI：

摘要

本文提出了编码符号串扰信道的两种迭代判决反馈均衡(DFE)算法.采用Turbo原则将卷积码Viterbi译码后的判决经重编码、交织后反馈到前端的判决反馈均衡部分

每次迭代时由于DFE中判决反馈部分来自于经Viterbi译码后的重编码值(因而更可靠)

经多次迭代后

系统误码率能得到显著提高.由于采用了DFE算法及迭代硬判反馈结构

系统复杂度较低

从而具有较高的实用价值.

Abstract

In this paper

we show that the performance of conventional Decision Feedback Equalizer (DFE) followed by Viterbi decoding for coded Inter-Symbol Interference (ISI) channels may be improved significantly by iterative use of decoding information.At each iteration

DFE may outperform its original form since now feedback decisions are more reliable as some errors are corrected by Viterbi decoding.The proposed algorithms may find some practical applications since they have relatively low complexity.

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Turbo Equalization with Frequency-Selective Fast-Fading Channel Tracing

Related Author

PENG Yue-xing

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Related Institution

Department of Radio Engineering,Southeast University

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