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research article
Designing Gabor windows using convex optimization
August 1, 2018
Redundant Gabor frames admit an infinite number of dual frames, yet only the canonical dual Gabor system, constructed from the minimal l(2)-norm dual window, is widely used. This window function however, might lack desirable properties, e. g. good time-frequency concentration, small support or smoothness. We employ convex optimization methods to design dual windows satisfying the Wexler-Raz equations and optimizing various constraints. Numerical experiments suggest that alternate dual windows with considerably improved features can be found. (C) 2018 Elsevier Inc. All rights reserved.
Type
research article
Web of Science ID
WOS:000427814300022
Authors
Publication date
2018-08-01
Publisher
Published in
Volume
330
Start page
266
End page
287
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
December 13, 2018
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