Robust adaptive beamforming based on a new steering vector estimation algorithm

被引:98
作者
Jia, Weimin [1 ]
Jin, Wei [1 ]
Zhou, Shuhua [2 ]
Yao, Minli [1 ]
机构
[1] Xian Res Inst High Technol, Dept Elect & Informat Engn, Xian 710025, Shaanxi, Peoples R China
[2] Xian Res Inst High Technol, Wire Commun Tech Off, Qing Zhou 262500, Shandong, Peoples R China
关键词
Adaptive beamforming; Steering vector estimation; Quadratically constrained quadratic programming; Robustness; PROJECTION APPROACH; MISMATCH PROBLEM; OPTIMIZATION;
D O I
10.1016/j.sigpro.2013.03.015
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 new approach to the design of robust adaptive beamforming is introduced. In the proposed approach, the mismatch vector of the desired steering vector is estimated by solving a quadratically constrained quadratic programming problem using an interference-plus-noise subspace projection matrix. The presumed look direction of desired signal is the only prior information of the proposed approach, and the parameters of uncertainty set or the angular sectors of the desired signal are not needed. In the presence of large DOA mismatch, the proposed beamformer performs well. Moreover, the proposed approach can deal with arbitrary steering vector mismatch in theory while many existing advanced robust beamformers cannot. Hence, it is very suitable for many practical applications. Crown Copyright (c) 2013 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:2539 / 2542
页数:4
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