Optimal widely linear MVDR beamforming for noncircular signals

This paper introduces the optimal widely linear (WL) minimum variance distorsionless response (MVDR) beamformer for the reception of an unknown signal of interest (SOI) corrupted by potentially second order (SO) noncircular background noise and interference. The SOI, whose waveform is unknown, is as...

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Bibliographic Details
Published in2009 IEEE International Conference on Acoustics, Speech and Signal Processing pp. 3573 - 3576
Main Authors Chevalier, P., Delmas, J.-P., Oukaci, A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.01.2009
Subjects
Array signal processing
Background noise
beamforming
Interference
MVDR beamforming
Noncircular
Nonlinear filters
Performance analysis
Scanning probe microscopy
Sensor arrays
Statistics
Steady-state
Vectors
widely linear
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Summary:This paper introduces the optimal widely linear (WL) minimum variance distorsionless response (MVDR) beamformer for the reception of an unknown signal of interest (SOI) corrupted by potentially second order (SO) noncircular background noise and interference. The SOI, whose waveform is unknown, is assumed to be SO noncircular with arbitrary noncircular properties. In the steady state and for SO noncircular SOI and/or interference, this new WL beamformer, that is derived from an original orthogonal decomposition, is shown to always improve the performance of both the well-known Capon's beamformer and a WL MVDR beamformer introduced recently in the literature. This optimal WL MVDR beamformer is first introduced and some of its performance are analyzed. Then, several adaptive implementations of this optimal WL beamformer are presented.
ISBN:9781424423538
1424423538
ISSN:1520-6149
2379-190X
DOI:10.1109/ICASSP.2009.4960398