| Turbo码的迭代译码方法的优化设计 |
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| 引用本文： | 汪汉新,陈少平,朱翠涛.Turbo码的迭代译码方法的优化设计[J].计算机工程与应用,2007,43(3):99-101. |
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| 作者姓名： | 汪汉新 陈少平 朱翠涛 |
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| 作者单位： | 中南民族大学,电信学院,武汉,430072 |
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| 基金项目： | 湖北省自然科学基金
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韩国全北大学情报通信研究院国际交流计划 |
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| 摘 要： | 迭代译码可以提高Turbo码的译码性能,但也是增加译码复杂性、延时及功率损耗的主要原因。在分析Turbo码的迭代译码原理和译码算法的基础上,提出了一种迭代译码的优化设计方法(Turbo-CRC),即利用循环冗余检测码CRC对Turbo译码器硬判决的输出结果进行检测,可以有效地减小平均迭代次数。计算机仿真结果表明在不降低译码性能和不增加系统复杂度的情况下,使用该方法可以有效地减小平均迭代次数和译码延时,尤其是在大信噪比时,效果更好。
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| 关 键 词： | Turbo码 循环冗余检测CRC 迭代译码 |
| 文章编号： | 1002-8331（2007）03-0099-03 |
| 修稿时间： | 2006-03 |
Optimal design for Turbo code's iterative decoding |
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| WANG Han-xin,CHEN Shao-ping,ZHU Cui-tao.Optimal design for Turbo code''''s iterative decoding[J].Computer Engineering and Applications,2007,43(3):99-101. |
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| Authors: | WANG Han-xin CHEN Shao-ping ZHU Cui-tao |
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| Affiliation: | College of Electronic and Information Engineering,South-Central University for Nationalities,Wuhan 430074,China |
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| Abstract: | Turbo code’s iterative decoding can provide an excellent performance,but it also brings on decoding complexity,decoding delay and power consumption.This paper analyzes iterative decoding and its algorithm for Turbo codes,proposes an approach of optimizing Turbo code's iterative decoding.CRC is used into Turbo decoding iterative processes to control the number of iterations.The simulation result shows the proposed scheme can reduce decoding delay and average number of iterations with negligible decoding complexity and performance degradation,especially in large SNR. |
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| Keywords: | Turbo codes cyclic redundancy check iterative decoding |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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