Strathprints logo
Strathprints Home | Open Access | Browse | Search | User area | Copyright | Help | Library Home | SUPrimo

A novel method for partially adaptive broadband beamforming

Liu, W. and Weiss, S. and Hanzo, L. (2003) A novel method for partially adaptive broadband beamforming. Journal of VLSI Signal Processing, 33 (3). pp. 337-344. ISSN 0922-5773

[img]
Preview
PDF (strathprints007137.pdf)
strathprints007137.pdf

Download (336kB) | Preview

Abstract

In this paper, 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 angles of arrival and frequencies. This results in bandlimited spectra of the blocking matrix outputs, which is further exploited by a subband decomposition prior to running independent unconstrained adaptive filters in each non-redundant subband. We discuss the design of both the blocking matrix using a genetic algorithm for an efficient sum-of-power-of-two coefficient format and the filter bank 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.

Item type: Article
ID code: 7137
Keywords: broadband beamforming, subband processing, adaptive filters, signal processing, power systems, Electrical engineering. Electronics Nuclear engineering, Signal Processing, Information Systems, Electrical and Electronic Engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Depositing user: Strathprints Administrator
Date Deposited: 10 Nov 2008
Last modified: 21 Jul 2015 16:26
URI: http://strathprints.strath.ac.uk/id/eprint/7137

Actions (login required)

View Item View Item