| 一种新的基-4SOVA译码算法 |
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| 引用本文： | 任德锋,葛建华,王勇,宋英杰.一种新的基-4SOVA译码算法[J].电子与信息学报,2011,33(8):1963-1968. |
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| 作者姓名： | 任德锋 葛建华 王勇 宋英杰 |
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| 作者单位： | 西安电子科技大学综合业务网理论及关键技术国家重点实验室 西安710071 |
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| 基金项目： | 长江学者和创新团队发展计划(IRT0852); 高等学校学科创新引智计划(B08038)资助课题 |
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| 摘 要： | SOVA (Soft Output Viterbi Algorithm)类算法因其译码时延远低于MAP类算法已成为Turbo码的实用译码算法,为了进一步减小译码延迟,提高译码速度,该文在简单分析基-4Max-Log-MAP算法的基础上,提出了一种新的基-4SOVA算法,并进行了完整的数学推导.该算法的关键是提出了一种新...
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| 关 键 词： | 迭代译码 Turbo码 卷积Turbo码 基-4软输出维特比算法 最大后验概率算法 |
A Novel Radix-4SOVA Algorithm |
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| Ren De-feng,Ge Jian-hua,Wang Yong,Song Ying-qie.A Novel Radix-4SOVA Algorithm[J].Journal of Electronics & Information Technology,2011,33(8):1963-1968. |
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| Authors: | Ren De-feng Ge Jian-hua Wang Yong Song Ying-qie |
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| Affiliation: | Ren De-feng Ge Jian-hua Wang Yong Song Ying-jie(State Key Lab.of Integrated Service Networks,Xidian University,Xi'an 710071,China) |
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| Abstract: | Soft Output Viterbi Algorithm(SOVA) is more practical than MAP in the algorithms for decoding Turbo codes,because of its shorter decoding delay.In order to decrease further the decoding delay and increase the decoding speed,based on the simple analysis of the radix-4Max-Log-MAP algorithm,a novel radix-4SOVA algorithm is proposed and a comprehensive mathematical explanation is given.The key of the algorithm is to propose a novel reliability update method which achieves the reliability update after combining ... |
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| Keywords: | Iterative decoding Turbo codes Convolutional Turbo Codes(CTC) Radix-4 Soft Output Viterbi Algorithm(Radix-4SOVA) MAP algorithm |
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