电子学报2018，Vol.46Issue(6)：1482-1487,6.DOI:10.3969/j.issn.0372-2112.2018.06.030
基于组合代价函数的双模式盲均衡新算法
A New Dual Mode Blind Equalization Algorithm Based on Combination Cost Function
摘要
Abstract
Although the dual mode blind equalization algorithm based on constant modulus and decision directed (DD) criterion can significantly improve the performance of equalization,the dual mode blind equalization algorithms at present need to set up the switching parameters which lack of theoretical basis. To solve the problem that the switching pa-rameters are difficult to be determined in the dual mode blind equalization algorithm,a new dual mode blind equalization al-gorithm with combination cost function is proposed. The combination cost function is obtained by using the weighted con-stant modulus and DD cost function,and the weight is adaptively adjusted during the blind equalizer update process to switch from constant modulus algorithm (CMA) to DD algorithm,which avoids the design of the switching parameters in the dual mode algorithm,and the generalization performance can be improved. To overcome the shortcoming of phase blindness of CMA,the proposed algorithm is optimized based on modified CMA (MCMA),which can further improve the convergence performance. The simulation results show that the proposed dual mode blind equalization algorithm can take full advantages of CMA and DD algorithm,which has faster convergence rate and lower steady state error.关键词
盲均衡/常数模算法/判决引导算法/双模式算法Key words
blind equalization/CMA/DD algorithm/dual mode algorithm分类
信息技术与安全科学引用本文复制引用
肖瑛,崔艳秋..基于组合代价函数的双模式盲均衡新算法[J].电子学报,2018,46(6):1482-1487,6.基金项目
国家自然科学基金项目(No.61201418) （No.61201418）
辽宁省高等学校优秀人才支持计划项目(No.LJQ2013126) （No.LJQ2013126）
中央高校基本科研业务费专项资金资助(No.DC201502060302) （No.DC201502060302）
辽宁省自然科学基金(No.20170540198) （No.20170540198）
