Combining GA and iterative MVDR for DOA estimation in space-time CDMA systems

被引：4
|
作者：
Chang, Jhih-Chung [1 ]
机构：
[1] Ling Tung Univ, Dept Informat Technol, Taichung 408, Taiwan
来源：
COMPUTERS & ELECTRICAL ENGINEERING | 2012年 / 38卷 / 06期
关键词：
D O I：
10.1016/j.compeleceng.2012.04.004
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper deals with direction-of-arrival (DOA) estimation of minimum variance distortionless response (MVDR) approach based on iterative searching technique for space-time code-division multiple access (CDMA) systems. It has been shown that the iterative searching technique is more likely to converge to a local maximum, causing errors in DOA estimation. In conjunction with a genetic algorithm for selecting initial search angle, an efficient approach is presented to achieve the advantages of iterative DOA estimation with fast convergence and less computational load over existing conventional spectral searching MVDR estimator. Simulation results are provided for illustrating the effectiveness of the proposed approach. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1399 / 1408
页数：10
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