Automatic computation of diagonal loading factor for robust adaptive beamforming based on Gaussian distribution

Authors:  Lu Gan, Zhouwei Yi

Abstract:
One of the most well-known robust adaptive beamforming techniques is diagonal loading (DL). The main drawback of this approach is that the loading factor is hard to be reliably determined. Recently, the general linear combination (GLC)-based robust Capon beamformer is presented to fully automatically determine the loading factor only from the given data. In this paper, we propose an enhanced GLC-based beamforming technique based on the Gaussian assumption. It provides an analytic solution ofthe loading factor, which can be calculated more efficiently. The simulations show thatit decreases the computational load without the degradation of performance.

Keywords:
Robust adaptive beamforming
Diagonal loading
General linear combination
Gaussian distribution

Published in: AEÜ-International Journal of Electronics and Communications (Volume 67, Issue 7, July  2013)

Publisher: Elsevier

ISSN Information: 1434-8411

Automatic computation of diagonal loading factor for robust adaptive beamforming based on Gaussian distribution

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