A Robust LCMP Beamformer with Limited Snapshots

Maaz Mahadi, Tarig Ballal, Mohammad Moinuddin, Tareq Y. Al-Naffouri, Ubaid Al-Saggaf

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper deals with the problem of automatic diagonal loading for the linear constrained minimum power beamformer. To find the beamformer’s weights, the linear constrained minimum power problem is reformulated into its generalized sidelobe canceller implementation, which is an unconstrained least-squares problem. To solve this problem, we utilize a bounded perturbation regularization approach where a perturbation matrix with a bounded norm is added to the linear transformation matrix of the least-squares problem in order to enhance the singular-value structure of the matrix. Compared to different diagonal loading methods, the proposed method shows superiority in performance when the number of snapshots is limited.
Original languageEnglish (US)
Title of host publication2020 28th European Signal Processing Conference (EUSIPCO)
PublisherIEEE
ISBN (Print)978-1-7281-5001-7
DOIs
StatePublished - Dec 18 2020

Fingerprint Dive into the research topics of 'A Robust LCMP Beamformer with Limited Snapshots'. Together they form a unique fingerprint.

Cite this