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Further results in spatial smoothing

Reddy, Maheswara K and Reddy, VU (1996) Further results in spatial smoothing. In: Signal Processing, 48 (3). pp. 217-224.

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Official URL: http://dx.doi.org/10.1016/0165-1684(95)00137-9


The paper analyses the effect of spatial smoothing on the performance of MUSIC algorithm. In particular, an attempt is made to bring out two effects of the smoothing: (i) reduction of effective correlation between the impinging signals and (ii) reduction of the noise perturbations due to finite data. For the case of a two-source scenario with widely spaced sources, simplified expressions for improvement with smoothing have been obtained which provide more insight into the impact of smoothing. Specifically, a pessimistic estimate of the minimum value of source correlation beyond which the smoothing is beneficial is brought out by these expressions. Computer simulations are used to demonstrate the usefulness of the analytical results.

Item Type: Journal Article
Publication: Signal Processing
Publisher: Elsevier science
Additional Information: Copyright of this article belongs to Elsevier science.
Keywords: Smoothing;DOA estimation
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 28 Apr 2011 05:21
Last Modified: 28 Apr 2011 05:21
URI: http://eprints.iisc.ac.in/id/eprint/37252

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