TY - GEN
T1 - A robust MVDR spectrum estimation technique
AU - Nezafat, Mahdi
AU - Kaveh, Mostafa
AU - Tsuji, Hiro
PY - 2007
Y1 - 2007
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=47849095652&partnerID=8YFLogxK
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U2 - 10.1109/SSP.2007.4301319
DO - 10.1109/SSP.2007.4301319
M3 - Conference contribution
AN - SCOPUS:47849095652
SN - 142441198X
SN - 9781424411986
T3 - IEEE Workshop on Statistical Signal Processing Proceedings
SP - 551
EP - 555
BT - 2007 IEEE/SP 14th Workshop on Statistical Signal Processing, SSP 2007, Proceedings
T2 - 2007 IEEE/SP 14th WorkShoP on Statistical Signal Processing, SSP 2007
Y2 - 26 August 2007 through 29 August 2007
ER -