NDLI: A novel method for partially adaptive broadband beamforming

Content Provider	IEEE Xplore Digital Library
Author	Wei Liu Weiss, S. Hanzo, L.
Copyright Year	2001
Description	Author affiliation: Dept. of Electron. & Comput. Sci., Southampton Univ., UK (Wei Liu)
Abstract	A novel subband-selective generalized sidelobe canceller (GSC) for partially adaptive broadband beamforming is proposed. The blocking matrix of the GSC is constructed such that its columns constitute a series of bandpass filters, which select signals with specific direction of arrival angles and frequencies. This results in bandlimited spectra of the blocking matrix outputs, which is further exploited by subband decomposition and discarding the low-pass subbands appropriately prior to running independent unconstrained adaptive filters in each non-redundant subband. We also discuss the design of both the blocking matrix and the filter banks for the subsequent subband decomposition. By these steps, the computational complexity of our subband-selective GSC is greatly reduced compared to other adaptive GSC schemes, while performance is comparable or even enhanced due to subband decorrelation, as simulations indicate.
Sponsorship	IEEE Signal Process. Soc.
Starting Page	361
Ending Page	372
File Size	591469
Page Count	12
File Format	PDF
ISBN	0780371453
ISSN	15206130
DOI	10.1109/SIPS.2001.957364
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-09-26
Publisher Place	Belgium
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Array signal processing Matrix decomposition Sensor arrays Band pass filters Frequency Computational complexity Decorrelation Adaptive filters Computer science Filter bank
Content Type	Text
Resource Type	Article

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