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Comparing efficient broadband beamforming architectures and their performance trade-offs

Weiss, S. and Proudler, I. (2002) Comparing efficient broadband beamforming architectures and their performance trade-offs. In: 14th International Conference on Digital Signal Processing, 2002-07-01 - 2002-07-03, Santorini.

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Abstract

In this paper, we evaluate efficient implementations of a broadband beamforming structure, that permits to project the data onto subspaces defined by the principle components of the array data. This optimum but computationally expensive approach is approximated in the frequency domain by processing in independent frequency bins. The latter is computationally optimal, but suffers from spectral leakage. We show that this problem persists even if the frequency resolution is increased, and that the worst case performance depends on the available degrees for freedoms only. Further, an oversampled subband scheme is proposed, which sacrifices some computational complexity but has a considerably improved and controllable worst case performance.

Item type: Conference or Workshop Item (Paper)
ID code: 38342
Keywords: oversampled filter banks, design , subband adaptive filters , 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: 08 Mar 2012 16:13
Last modified: 17 Jun 2015 19:19
URI: http://strathprints.strath.ac.uk/id/eprint/38342

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