西安电子科技大学学报（自然科学版）2017，Vol.44Issue(5)：158-164,7.DOI:10.3969/j.issn.1001-2400.2017.05.027
带有误差反馈结构的多天线变步长均衡算法
Variable step size multi-antenna diversity equalization algorithm using error feedback
摘要
Abstract
Owning to the correlation of the error signal in multi-antenna diversity adaptive decision feedback equalization being not same with white noises',the equalization performance is constrained.This paper adds error feedback filters to the traditional multi-antenna diversity adaptive decision feedback equalizer.The proposed structure can decrease the correlation of the error signal to increase the performance under the mean square error criterion.However,the proposed structure lowers the algorithm's convergence speed.Consequently,a nonlinear function between step size and error signal by modifying the sigmoid function in order to make this variable step-size measure be adapted to decision feedback equalizers is proposed.The modified algorithm has a larger step size at beginning.Simulation results show that the proposed approach can increase the speed and lower mean square with only little increase in computation.关键词
空间分集/判决反馈均衡/误差反馈/码间串扰/变步长Key words
spatial diversity/decision feedback equalization/error feedback/Inter-symbol interference/variable step size分类
信息技术与安全科学引用本文复制引用
侯箫剑,许华,曾乐雅..带有误差反馈结构的多天线变步长均衡算法[J].西安电子科技大学学报（自然科学版）,2017,44(5):158-164,7.基金项目
国家自然科学基金资助项目(61001111) （61001111）
