A ROBUST BEAMFORMER BASED ON WEIGHTED SPARSE CONSTRAINT

被引：14

作者：

Liu, Y. P. ^{[1
]}

Wan, Q. ^{[1
]}

Chu, X. L. ^{[2
]}

机构：

[1] UESTC, Sch Elect Engn, 4,2nd Sect North Jianshe Rd, Chengdu, Sichuan, Peoples R China

[2] Kings Coll London, Div Engn, London WC2R 2LS, England

来源：

PROGRESS IN ELECTROMAGNETICS RESEARCH LETTERS | 2010年 / 16卷

基金：

国家高技术研究发展计划(863计划); 中国国家自然科学基金; 国家教育部科学基金资助;

关键词：

D O I：

10.2528/PIERL10062308

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：

Applying a sparse constraint on the beam pattern has been suggested to suppress the sidelobe level of a minimum variance distortionless response (MVDR) beamformer. In this letter, we introduce a weighted sparse constraint in the beamformer design to provide a lower sidelobe level and deeper nulls for interference avoidance, as compared with a conventional MVDR beamformer. The proposed beamformer also shows improved robustness against the mismatch between the steering angle and the direction of arrival (DOA) of the desired signal, caused by imperfect estimation of DOA.

引用

页码：53 / 60

页数：8

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