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A generalised sidelobe canceller architecture based on oversampled subband decompositions

Weiss, Stephan and Wei, Liu and Stewart, Robert (2000) A generalised sidelobe canceller architecture based on oversampled subband decompositions. In: 5th International Conference on Mathematics in Signal Processing, 2000-12-18 - 2000-12-20, University of Warwick.

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Abstract

Adaptive broadband beamforming can be performed in oversampled subband signals, whereby an independent beamformer is operated in each frequency band. This has been shown to result in a considerably reduced computational complexity. In this paper, we primarily investigate the convergence behaviour of the generalised sidelobe canceller (GSC) based on normalised least mean squares algorithm (NLMS) when operated in subbands. The minimum mean squared error can be limited, amongst other factors, by the aliasing present in the subbands. With regard to convergence speed, there is strong indication that the subband-GSC converges faster than a fullband counterpart of similar modelling capabilities. Simulations are presented.

Item type: Conference or Workshop Item (Paper)
ID code: 32697
Keywords: adaptive broadband beamforming, broadband beamforming, oversampled subband signals, convergence behaviour , Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Depositing user: Pure Administrator
Date Deposited: 31 Aug 2011 10:42
Last modified: 22 May 2015 09:49
URI: http://strathprints.strath.ac.uk/id/eprint/32697

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