| 基于CHASE译码思想的PCMA信号盲分离算法 |
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| 引用本文： | 杜 健,巩克现,彭 华.基于CHASE译码思想的PCMA信号盲分离算法[J].通信学报,2015,36(3):202-207. |
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| 作者姓名： | 杜 健 巩克现 彭 华 |
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| 作者单位： | 信息工程大学 信息系统工程学院，河南 郑州 450002 |
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| 基金项目： | 国家自然科学基金资助项目（61072046）；国防基金资助项目（9140C860103120C8601）；河南省基础与前沿计划基金资助项目（132300410049） |
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| 摘 要： | 在软输出逐幸存路径处理（SOVA-PSP）算法的基础上，提出了基于Chase译码思想的载波成对复用多址（PCMA）信号的盲分离算法。该算法对SOVA-PSP软输出的结果进行可靠性排序，对于排序中可靠性较低的混合符号进行信号重构，通过重构信号和接收信号之间的欧式距离对比纠正其中的错误结果。仿真结果表明，所提算法与SOVA-PSP算法相比，性能有2 dB左右的增益。
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| 关 键 词： | 成对载波多址 逐幸存路径处理 CHASE译码 单通道盲分离 |
Algorithm for blind separation of PCMA based on CHASE decoding |
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| Jian DU,Ke-xian GONG,Hua PENG.Algorithm for blind separation of PCMA based on CHASE decoding[J].Journal on Communications,2015,36(3):202-207. |
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| Authors: | Jian DU Ke-xian GONG Hua PENG |
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| Affiliation: | Institute of Information Engineering, Information Engineering University, Zhengzhou 450002, China |
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| Abstract: | On the basis of SOVA-PSP, a novel algorithm for blind separation of PCMA signal was presented based on CHASE decoding. The results of soft output of SOVA-PSP were sorted based on reliability in the algorithm, the mixed symbols that had low reliability in the sorted results were reconstructed. Compared the euclidian distance between reconstructed signal and received signal, the wrong results can be corrected. Simulation results show that compared with the SOVA-PSP algorithm, the novel algorithm can improve the gain of about 2 dB. |
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| Keywords: | pared carrier multiple access(PCMA) per-survivor processing (PSP) CHASE decoding single-channel blind source separation |
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