Vol. 16

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2010-07-14

A Robust Beamformer Based on Weighted Sparse Constraint

By Yipeng Liu, Qun Wan, and Xiaoli Chu
Progress In Electromagnetics Research Letters, Vol. 16, 53-60, 2010
doi:10.2528/PIERL10062308

Abstract

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.

Citation


Yipeng Liu, Qun Wan, and Xiaoli Chu, "A Robust Beamformer Based on Weighted Sparse Constraint," Progress In Electromagnetics Research Letters, Vol. 16, 53-60, 2010.
doi:10.2528/PIERL10062308
http://www.jpier.org/PIERL/pier.php?paper=10062308

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