Linear Independence of Gabor Systems in Finite Dimensional Vector Spaces |
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Authors: | Jim Lawrence Götz E. Pfander David Walnut |
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Affiliation: | (1) Department of Mathematical Sciences, George Mason University, Fairfax, VA 22030, USA;(2) School of Engineering and Science, International University Bremen, 28759 Bremen, Germany |
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Abstract: | We discuss the linear independence of systems ofmvectors in n-dimensional complex vector spaces where the m vectors are time-frequency shifts of one generating vector. Such systems are called Gabor systems. When n is prime, we show that there exists an open, dense subset with full-measure of such generating vectors with the property that any subset of n vectors in the corresponding full Gabor system of n2 vectors is linearly independent. We derive consequences relevant to coding, operator identification and time-frequency analysis in general. |
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