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Constrained Adaptive Broadband Beamforming Algorithm in Frequency Domain

Constrained Adaptive Broadband Beamforming Algorithm in Frequency Domain
Constrained Adaptive Broadband Beamforming Algorithm in Frequency Domain
In this paper, the linearly constrained minimum variance (LCMV) beamforming problem is formulated in the frequency domain based on the time-domain formulation of the cost function and the constraints. We then derive a frequency-domain constrained adaptive broadband beamforming algorithm, which has a much lower computational complexity than the time-domain algorithm, although it suffers from a slower convergence speed, as shown by simulations. It is however an attractive option when the implementation of the time-domain algorithm is prohibitive due to large computational complexity. An alternative implementation of this constrained frequency-domain algorithm using the generalised sidelobe canceller (GSC) is also studied.
0 7803 8545 4
94-98
Liu, W
622f6d44-225b-4d4e-9ed9-839e234e7163
Koh, C L
8a2743b0-d7ca-435b-9861-cd1c3f9036a4
Weiss, S
a1716781-351d-41d2-8d67-3e3d34f16476
Liu, W
622f6d44-225b-4d4e-9ed9-839e234e7163
Koh, C L
8a2743b0-d7ca-435b-9861-cd1c3f9036a4
Weiss, S
a1716781-351d-41d2-8d67-3e3d34f16476

Liu, W, Koh, C L and Weiss, S (2004) Constrained Adaptive Broadband Beamforming Algorithm in Frequency Domain. Third IEEE Sensor Array and Multidimensional Signal Processing Workshop, Spain. 18 - 21 Jul 2004. pp. 94-98 .

Record type: Conference or Workshop Item (Paper)

Abstract

In this paper, the linearly constrained minimum variance (LCMV) beamforming problem is formulated in the frequency domain based on the time-domain formulation of the cost function and the constraints. We then derive a frequency-domain constrained adaptive broadband beamforming algorithm, which has a much lower computational complexity than the time-domain algorithm, although it suffers from a slower convergence speed, as shown by simulations. It is however an attractive option when the implementation of the time-domain algorithm is prohibitive due to large computational complexity. An alternative implementation of this constrained frequency-domain algorithm using the generalised sidelobe canceller (GSC) is also studied.

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More information

Published date: 2004
Additional Information: Event Dates: July 18-21
Venue - Dates: Third IEEE Sensor Array and Multidimensional Signal Processing Workshop, Spain, 2004-07-18 - 2004-07-21
Organisations: Electronics & Computer Science

Identifiers

Local EPrints ID: 261263
URI: http://eprints.soton.ac.uk/id/eprint/261263
ISBN: 0 7803 8545 4
PURE UUID: 4cfb06f9-d6f3-4121-a2af-04eef08ad7ba

Catalogue record

Date deposited: 26 Sep 2005
Last modified: 02 Dec 2019 21:07

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Contributors

Author: W Liu
Author: C L Koh
Author: S Weiss

University divisions

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