一种适用于高阶QAM系统Bussgang类盲均衡新方法  

A Novel Method of Bussgang-type Blind Equalization in High-order QAM Systems

作　　者：阮秀凯[1] 蒋啸[2] 李昌[1] 

机构地区：[1]温州大学物理与电子信息工程学院,温州325035 [2]南京邮电大学自动化学院,南京210046

出　　处：《电子与信息学报》2012年第8期2018-2022,共5页Journal of Electronics & Information Technology

基　　金：国家自然科学基金青年项目(61001067)资助课题

摘　　要：该文提出一种适用于高阶QAM系统的新Bussgang类多模盲均衡算法。将新的代价函数与星座匹配误差函数结合,给出一种瞬时双模切换混合算法,然后设计了一种基于判决圆的模式切换准则,从而达到进一步有效降低新算法稳态误差的效果。最后,仿真结果以高阶256QAM信号为例,验证了该算法对于高阶QAM信号的盲均衡能力和良好效果。A novel multi-modulus method of Bussgang-type blind equalization algorithm in higher-order Quadrature Amplitude Modulation （QAM） systems is proposed. To reduce the steady-state error effectively, an instantaneous switch-mode hybrid algorithm whose associative cost function is formulated by the novel cost function and the Constellation Matched Error （CME） is proposed, and a criterion of circular mode switching decision is designed. Finally, 256-QAM signal is used to simulate, all of these results verify the proposed blind equalization algorithm can achieve good performance in high-order QAM systems.

关 键 词：无线通信 盲均衡 正交幅度调制 Bussgang瞬时双模切换 

分 类 号：TN92[电子电信—通信与信息系统] TN911.7[电子电信—信息与通信工程]