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Adaptive broadband beamforming with arbitrary array geometry

Alzin, A. and Coutts, F. K. and Corr, J. and Weiss, S. and Proudler, I. K. and Chambers, J. A. (2015) Adaptive broadband beamforming with arbitrary array geometry. In: 2nd IET International Conference on Intelligent Signal Processing 2015 (ISP). IET. ISBN 9781785611360

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Abstract

This paper expands on a recent polynomial matrix formulation for a minimum variance distortionless response (MVDR) broadband beamformer. Within the polynomial matrix framework, this beamformer is a straightforward extension from the narrowband case, and offers advantages in terms of complexity and robustness particularly for off-broadside constraints. Here, we focus on arbitrary 3-dimensional array configurations of no particular structure, where the straightforward formulation and incorporation of constraints is demonstrated in simulations, and the beamformer accurately maintains its look direction while nulling out interferers.