| 基于IEEE 802.16a的TCM译码方案 |
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| 引用本文： | 尹俊勋,刘婷婷,姚志强,刘永毓.基于IEEE 802.16a的TCM译码方案[J].华南理工大学学报(自然科学版),2005,33(6):9-14. |
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| 作者姓名： | 尹俊勋 刘婷婷 姚志强 刘永毓 |
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| 作者单位： | 华南理工大学,电子与信息学院,广东,广州,510640;湘潭大学,信息工程学院,湖南,湘潭,411105 |
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| 基金项目： | 国家科技部创新基金项目(20034401042437);广州市科思特新通信科技有限公司资助项目 |
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| 摘 要： | 为设计并实现宽带无线接入系统的差错控制，基于无线本地城域网标准IEEE802．16a，提出了三种TCM码的译码方案．通过理论分析对比了各算法的实现的难易程度，采用定点运算进行计算机仿真，获得了不同码型各译码方案的误比特率性能曲线．理论分析和仿真结果说明，不存在绝对优异的方案．最后给出标准中具体码型的方案选择。
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| 关 键 词： | 前向纠错编码 格形编码调制 格形译码 维特比译码 |
| 文章编号： | 1000-565X(2005)06-0009-05 |
| 修稿时间： | 2004年9月10日 |
Decoding of TCM Codes Based on IEEE 802.16a |
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| YIN Jun-xun,LIU Ting-ting,YAO Zhi-qiang,Liu Yong-yu.Decoding of TCM Codes Based on IEEE 802.16a[J].Journal of South China University of Technology(Natural Science Edition),2005,33(6):9-14. |
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| Authors: | YIN Jun-xun LIU Ting-ting YAO Zhi-qiang Liu Yong-yu |
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| Institution: | Yin Jun-xun 1 Liu Ting-ting 1 Yao Zhi-qiang 2 Liu Yong-yu 1 |
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| Abstract: | With the aim of designing and implementing the error control part in the wideband wireless access system, three decoding methods for TCM codes are proposed based on the wireless metropolitan standard IEEE 802.16a. The difficulties in the implementation of the decoding algorithms are then theoretically analyzed and compared. Moreover, computer simulation with fix-point computation is carried out, thus obtaining the curves of the bit error rate performance of the decoding algorithms for different TCM codes. The theoretical and simulated results indicate 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. |
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| Keywords: | forward error correction trellis coded modulation trellis decoding Viterbi decoding |
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