Kyushu Journal of Mathematics
Online ISSN : 1883-2032
Print ISSN : 1340-6116
ISSN-L : 1340-6116
67-1
IRREGULAR GABOR FRAMES
Ilona IGLEWSKA-NOWAKMatthias HOLSCHNEIDER
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2013 Volume 67 Issue 1 Pages 237-247

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Abstract
In this paper we investigate irregular Gabor frames. It is shown that for any Schwartz function the family of its time-frequency shifts constitutes a weighted Gabor frame if only the lattice of sampling time-frequency values is dense enough. The proof uses classical analysis tools only and is based on the localization of the kernel of the Gabor transform. Further, the method allows us to find the density bound explicitly. A numerical example is presented.
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© 2013 Faculty of Mathematics, Kyushu University
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