Journal of South China University of Technology (Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (6): 9-13,35.

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Decoding of TCM Codes Based on IEEE 802.16a

Yin Jun-xun1  Liu Ting-ting1  Yao Zhi-qiang2  Liu Yong-yu1   

  1. 1.College of Electronic and Information Engineering，South China Univ.of Tech.,Guangzhou 5 10640,Guangdong,China;2.College of Inform ation Engineering,Xiangtan Univ.,Xiangtan 411105,Hunan,China
  • Received:2004-09-10 Online:2005-06-25 Published:2005-06-25
  • Contact: 尹俊勋(1942-)，男，教授，博士生导师，主要从事通讯、音视频信号处理及计算机应用方面的研究． E-mail:eejyin@scut.edu.cn
  • About author:尹俊勋(1942-)，男，教授，博士生导师，主要从事通讯、音视频信号处理及计算机应用方面的研究．
  • Supported by:

    国家科技部刨新基金项目(20034401042437)；广州市科思特新通信科技有限公司资助项目

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Abstract:

W ith the aim of designing and implementing the eror control part in the wideband wireless access sys.tern ,three decoding methods for TCM codes are proposed based on the wireless metropolitan standard IEEE 802.1 6a.The dimculties in the implementation of the decoding algorithms are then theoretically analyzed and corn-pared.Moreover,computer simulation with fix-point computation is carried out,thus obtaining the curves of the bit eror rate performance of the decoding algorithms for different TCM codes.The theoretical and simulated results in-dicate that there is no best algorithm for the decoding of TCM codes. The specific decoding methods for different TCM codes in the standard are presented at the end of the paper.

Key words: forw ard eror corection, trellis coded modulation, trellis decoding, Viterbi decoding