An Adaptive Constant Modulus Blind Equalization Algorithm and Its Stochastic Stability Analysis

被引：27
|
作者：
Abrar, Shafayat [1 ]
Nandi, Asoke K. [1 ]
机构：
[1] Univ Liverpool, Dept Elect Engn & Elect, Liverpool L69 3GJ, Merseyside, England
来源：
IEEE SIGNAL PROCESSING LETTERS | 2010年 / 17卷 / 01期
关键词：
Adaptive equalizer; blind equalization; constant modulus algorithm; stochastic stability; SYSTEMS;
D O I：
10.1109/LSP.2009.2031765
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A constant modulus algorithm is presented for blind equalization of complex-valued communication channels. The proposed algorithm is obtained by solving a novel deterministic optimization criterion which comprises the minimization of a priori as well as a posteriori dispersion error, leading to an update equation having a particular zero-memory continuous Bussgang-type non-linearity. We also derive a stochastic bound for the range of step-sizes for a generic Bussgang-type constant modulus algorithm. The theoretical result is validated through computer simulations.
引用
收藏
页码：55 / 58
页数：4
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