Finite Data Performance Analysis Of MVDR Beamformer With Spatial Smoothing

Raghunath, KJ and Reddy, VU (1990) Finite Data Performance Analysis Of MVDR Beamformer With Spatial Smoothing. In: Fifth ASSP Workshop on Spectrum Estimation and Modeling, 1990, 10-12 October, Rochester, NY, pp. 367-371.

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Abstract

In this paper, we analyze the finite-data performance of MVDR beamformer with spatial smoothing, using first order perturbation theory. In particular, we develop expressions for the mean values of the power gain in any direction of interest, the output power and the norm of the weight-error vector , as a function of the number of snapshots and the number of smoothing steps. We simplify these expressions for a single interference case without smoothing to show explicitly how the SNR, spacing of the interference from the desired signal and the correlation between them influence the beam former performance. Simulations are used to verify the usefulness of the theoretical expressions and the results show an excellent agreement with predicted results.

Item Type:	Conference Paper
Publisher:	IEEE
Additional Information:	Copyright 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	25 Aug 2008
Last Modified:	19 Sep 2010 04:27
URI:	http://eprints.iisc.ac.in/id/eprint/7034

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