大连海事大学学报 >
2022 , Vol. 48 >Issue 1: 120 - 126
DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2022.01.014
基于凸组合的CMA稳态性能分析
收稿日期: 2021-07-12
修回日期: 2021-10-31
网络出版日期: 2021-10-31
Steady-state performance analysis of CMA based on convex combination
Received date: 2021-07-12
Revised date: 2021-10-31
Online published: 2021-10-31
关键词: 恒模盲均衡算法(CMA); 盲均衡滤波器; 凸组合; 稳态性能; 超量均方误差(EMSE)
张卓 , 林斌 , 张佳微 . 基于凸组合的CMA稳态性能分析[J]. 大连海事大学学报, 2022 , 48(1) : 120 -126 . DOI: 10.16411/j.cnki.issn1006-7736.2022.01.014
In order to further improve the convergence speed of the blind equalizer and reduce the steady-state error, a convex combination scheme for two constant modulus algorithm (CMA) blind equalization filters with different p and asynchronous length was proposed to be suitable for impulse noise environment subject to alpha stable distribution. The theoretical formula of excess mean square error (EMSE) of the scheme was derived by using fractional lower order statistics, energy conservation and separation hypothesis. Simulation results show that the scheme can retain the advantages of each component blind equalization filter, improve the convergence speed of the system to reduce the steadystate error, which verify the accuracy and rationality of the scheme.
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