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Proceedings Paper

IDMR beamforming in the presence of direction-independent array mainfold mismatch
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Paper Abstract

The output SINR achieved via Indirect Dominant Mode Rejection (IDMR) beamforming is substantially higher than the achieved with other beamforming algorithms. IDMR is based on a parametric estimate of the covariance matrix which is obtained using an estimate of the directions of the dominant sources and assuming that the array manifold is available. In most applications the array manifold is not known precisely and performance of IDMR can be deteriorated. The focus of this paper is to enable the IDMR beamformer to operate in a scenario of direction-independent steering vector mismatch. A modified version of an algorithm introduced by Friedlander is employed to estimate the direction-independent mismatch. Thereafter IDMR is implemented. Simulation analysis reveals that this technique enables IDMR to operate in a scenario of direction-independent manifold mismatch.

Paper Details

Date Published: 12 May 2006
PDF: 12 pages
Proc. SPIE 6248, Wireless Sensing and Processing, 62480Y (12 May 2006); doi: 10.1117/12.668928
Show Author Affiliations
Ernesto Santos, Purdue Univ. (United States)
Michael Zoltowski, Purdue Univ. (United States)

Published in SPIE Proceedings Vol. 6248:
Wireless Sensing and Processing
Raghuveer M. Rao; Sohail A. Dianat; Michael D. Zoltowski, Editor(s)

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