Support size conditions for time-frequency representations on finite Abelian groups

  • The uncertainty principle for functions on finite Abelian groups provides us with lower bounds on the cardinality of the support of Fourier transforms of functions of small support. We discuss novel results in this realm and generalize these to obtain results relating the support sizes of functions and their short-time Fourier transforms. We then apply these results to construct a class of equal norm tight Gabor frames that are maximally robust to erasures. We discuss consequences of our findings to the theory of recovering and storing signals with sparse time-frequency representations.

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Meta data
Publishing Institution:IRC-Library, Information Resource Center der Jacobs University Bremen
Author:Felix Krahmer, Götz E. Pfander, Peter Rashkov
Persistent Identifier (URN):urn:nbn:de:gbv:579-opus-1006738
Series (No.):Constructor University Technical Reports (13)
Document Type:Technical Report
Language:English
Date of First Publication:2007/12/31
Library of Congress Classification:Q Science / QA Mathematics (incl. computer science)
School:SES School of Engineering and Science

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