李茹,张涛,朱秋煜

• 1:上海大学通信与信息工程学院
• 2:中国科学院上海技术物理研究所

摘要(Abstract)：

通信过程中因信道畸变而产生的码间干扰(ISI)严重影响通信质量,该问题常采用均衡技术来解决。介绍了传统定步长盲均衡CMA算法原理,仿真分析了其不能兼顾收敛速度快与稳态误差小的问题,为解决这一问题,提出一种基于Sigmoid函数的变步长盲均衡算法。为解决码间串扰问题,对CMA算法进行改进并对改进算法原理进行阐述,分析了参数对算法性能的影响。最后通过仿真实验证实了改进算法能够加快收敛速度,同时能保持较小的稳态误差。

关键词(KeyWords)： 均衡技术;恒模算法;码间干扰;Sigmoid函数;收敛速度;稳态误差

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 李茹,张涛,朱秋煜

DOI: 10.16652/j.issn.1004-373x.2018.03.003

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