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VLSISP
2011

Wideband Beamspace Processing Using Orthogonal Modal Beamformers

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Wideband Beamspace Processing Using Orthogonal Modal Beamformers
We introduce a novel beamspace processing structure that can be used for narrowband or wideband sources located either in nearfield or farfield of a sensor array. Main features of the new structure are: (i) a single parameter is used to steer the processor to any desired radial distance; (ii) a set of fixed frequency invariant orthogonal beamformers are used to transform array data into beamspace; and (iii) consequently, only a single set of beamspace weights are needed to process wideband beamspace data. The utility of the novel structure is illustrated by applications in interference cancellation and direction/range estimation. Keywords broadband beamforming, array processing, adaptive arrays, direction estimation, interference cancellation, nearfield, sensor arrays
Thushara D. Abhayapala, Darren B. Ward
Added 15 May 2011
Updated 15 May 2011
Type Journal
Year 2011
Where VLSISP
Authors Thushara D. Abhayapala, Darren B. Ward
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