Algorithm for blind separation of PCMA based on CHASE decoding

Jian DU; Ke-xian GONG; Hua PENG

doi:10.11959/j.issn.1000-436x.2015075

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Algorithm for blind separation of PCMA based on CHASE decoding

Academic paper | 更新时间：2024-06-05

- Algorithm for blind separation of PCMA based on CHASE decoding
- Journal of Communications Vol. 36, Issue 3, Pages: 202-207(2015)
- 作者机构：
  
  信息工程大学信息系统工程学院，河南郑州 450002
- 作者简介：
- 基金信息：
  
  TheNationalNaturalScienceFoundationofChina(61072046);The National Defense Foundation of China(9140C860103120C8601);The Base and Cutting-Edge Technology Research Project of Henan Province(132300410049)
- DOI：10.11959/j.issn.1000-436x.2015075
  CLC： TN911.7
- Online First：2015-03，
  
  Published：25 March 2015
- 稿件说明：
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Jian DU, Ke-xian GONG, Hua PENG. Algorithm for blind separation of PCMA based on CHASE decoding[J]. Journal of Communications, 2015, 36(3): 202-207.
DOI：

Jian DU, Ke-xian GONG, Hua PENG. Algorithm for blind separation of PCMA based on CHASE decoding[J]. Journal of Communications, 2015, 36(3): 202-207. DOI： 10.11959/j.issn.1000-436x.2015075.

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。

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 recon-structed 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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references

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