Adaptive Blind Equalization for MIMO Systems under α-Stable Noise Environment

被引：15

作者：

Li Sen ^{[1
,2
]}

Qiu Tianshuang ^{[1
]}

Zha Daifeng

机构：

[1] Dalian Univ Technol, Coll Elect & Informat Engn, Dalian, Peoples R China

[2] Dalian Maritime Univ, Informat Sci Technol Coll, Dalian, Peoples R China

来源：

IEEE COMMUNICATIONS LETTERS | 2009年 / 13卷 / 08期

基金：

美国国家科学基金会;

关键词：

alpha-stable distribution; constant modulus algorithm; fractional lower-order statistics; MIMO equalization; SEPARATION;

D O I：

10.1109/LCOMM.2009.081982

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

The presence of non-Gaussian impulsive noise in wireless system can degrade the performance of existing equalizers and signal detectors. In this paper, the problem of blind source separation and equalization for MINI systems in heavy-tailed impulsive noise is studied. A generalized multi-user constant modulus cost function by employing the fractional lower-order statistic of the equalizer input signal is proposed. The associated adaptive blind equalization algorithm based on a stochastic gradient descent method is defined as fractional lower-order multi-user constant modulus algorithm (FLOS_MU_CMA). Computer simulations are presented to illustrate the performance of the new algorithm

引用

页码：609 / 611

页数：3

共 12 条

[1]

Chambers JA, 2003, 2003 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOL V, PROCEEDINGS, P133

[2]

Ding Z., 2001, Blind Equalization and Indentification

[3] Adaptive blind source separation and equalization for multiple-input/multiple-output systems [J].

Li, Y ;

Liu, KJR .

IEEE TRANSACTIONS ON INFORMATION THEORY, 1998, 44 (07) :2864-2876

[4]

Nikias C. L., 1995, Signal Processing with Alpha-Stable Distributions and Applications

[5] A constant modulus algorithm for multiuser signal separation in presence of delay spread using antenna arrays [J].

Papadias, CB ;

Paulraj, AJ .

IEEE SIGNAL PROCESSING LETTERS, 1997, 4 (06) :178-181

[6] Constant modulus blind equalization based on fractional lower-order statistics [J].

Rupi, M ;

Tsakalides, P ;

Del Re, E ;

Nikias, CL .

SIGNAL PROCESSING, 2004, 84 (05) :881-894

[7] SIGNAL-PROCESSING WITH FRACTIONAL LOWER ORDER MOMENTS - STABLE PROCESSES AND THEIR APPLICATIONS [J].

SHAO, M ;

NIKIAS, CL .

PROCEEDINGS OF THE IEEE, 1993, 81 (07) :986-1010

[8]

Silva MTM, 2004, 2004 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, VOL IV, PROCEEDINGS, P857

[9]

SILVA TMM, 2004, INT TEL S NAT BRAZ

[10] Capture Properties of the Generalized CMA in Alpha-Stable Noise Environment [J].

Tang, Hong ;

Qiu, Tianshuang ;

Li, Ting .

WIRELESS PERSONAL COMMUNICATIONS, 2009, 49 (01) :107-122

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