83 citations · 515 across the 58 of their papers we have counts for
Showing 2009 · math.FAShow all
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math.FA2009★ 3 cited
Time-Frequency Partitions and Characterizations of Modulation Spaces with Localization Opertors
Monika Doerfler, Karlheinz Groechenig
We study families of time-frequency localization operators and derive a new characterization of modulation spaces. This characterization relates the size of the localization operat…
math.FA2009
Representation and Approximation of Pseudodifferential Operators by Sums of Gabor Multipliers
Karlheinz Groechenig
We investigate a new representation of general operators by means of sums of shifted Gabor multipliers. These representations arise by studying the matrix of an operator with respe…
math.FA2009★ 5 cited
Isomorphism properties of Toeplitz operators and pseudo-differential operators between modulation spaces
Karl-Heinz Gröchenig, Joachim Toft
We investigate the lifting property of modulation spaces and construct explicit isomorpisms between them. For each weight function and suitable window function $\fy $, the Toep…