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2010-07-14
A Robust Beamformer Based on Weighted Sparse Constraint
By
Progress In Electromagnetics Research Letters, Vol. 16, 53-60, 2010
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
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