A robust MVDR spectrum estimation technique

Mahdi Nezafat, Mostafa Kaveh, Hiro Tsuji

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

A major problem in applying Minimum Variance Distortionless Response (MVDR) beamformer, also known as Capon beamformer, in operational systems is the potential sensitivity to mismatch between actual and assumed models for the array response and/or the received signals used to derive the beamformer. Typical mismatches that have been addressed are DOA mismatch, sensor gain and phase perturbation, and sensor position perturbation. The subject of mutual coupling, for the most part, has been ignored in the development of algorithms for robust beamforming. In this paper, we present an extension of a previously developed robust MVDR beamformer that takes into account the mutual coupling between elements of the antenna array and the uncertainties in the array response and in the mutual coupling explicitly. We present several experimental results using measurements that were carried out in an anechoic chamber.

Original languageEnglish (US)
Title of host publication2007 IEEE/SP 14th Workshop on Statistical Signal Processing, SSP 2007, Proceedings
Pages551-555
Number of pages5
DOIs
StatePublished - Dec 1 2007
Event2007 IEEE/SP 14th WorkShoP on Statistical Signal Processing, SSP 2007 - Madison, WI, United States
Duration: Aug 26 2007Aug 29 2007

Other

Other2007 IEEE/SP 14th WorkShoP on Statistical Signal Processing, SSP 2007
CountryUnited States
CityMadison, WI
Period8/26/078/29/07

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