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Weyl-Heisenberg Frame Operators and Kohn-Nirenberg Symbols

$icon-email$ T. C. Easwaran Nambudiri , K. Parthasarathy

Abstract

An explicit expression for the Kohn-Nirenberg symbol of a Weyl-Heisenberg frame operator on $L^{2} (R)$ is obtained directly from the Gabor atom coming from new classes of window functions. This new approach, using only elementary Fourier analysis, is independent of the theory of distributions and works strictly inside $L^{2} (R)$ . Kohn-Nirenberg operators are introduced and are shown to be Weyl-Heisenberg frame operators in suitable cases.

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Weyl-Heisenberg Frame Operators and Kohn-Nirenberg Symbols

Abstract