Phase space distribution of Gabor expansions

Details Phase space distribution of Gabor expansions Phase space distribution of Gabor expansions

2008-05-27

arxiv.org/abs/0805.4166v1

Mathematics

Functional Analysis

9 pages, submitted to publication

Scientific paper

We present an example of a complete and minimal Gabor system consisting of time-frequency shifts of a Gaussian, localized at the coordinate axes in the time-frequency plane (phase space). Asymptotically, the number of time-frequency shifts contained in a disk centered at the origin is only 2/pi times the number of points from the von Neumann lattice found in the same disk. Requiring a certain regular distribution in phase space, we show that our system has minimal density among all complete and minimal systems of time-frequency shifts of a Gaussian.

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