On the Duality Principle by Casazza, Kutyniok, and Lammers

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The R-dual sequences of a frame {f(i)}(i is an element of I), introduced by Casazza, Kutyniok and Lammers in (J. Fourier Anal. Appl. 10(4): 383-408, 2004), provide a powerful tool in the analysis of duality relations in general frame theory. In this paper we derive conditions for a sequence {omega(j)}(j is an element of I) to be an R-dual of a given frame {fi}(i is an element of I). In particular we show that the R-duals {omega(j)}(j is an element of I) can be characterized in terms of frame properties of an associated sequence {n(i)}(i is an element of I). We also derive the duality results obtained for tight Gabor frames in (Casazza et al. in J. Fourier Anal. Appl. 10(4): 383-408, 2004) as a special case of a general statement for R-duals of frames in Hilbert spaces. Finally we consider a relaxation of the R-dual setup of independent interest. Several examples illustrate the results.
Publisher
Birkhauser Boston Inc
Issue Date
2011-08
Language
English
Article Type
Article
Citation

JOURNAL OF FOURIER ANALYSIS AND APPLICATIONS, v.17, no.4, pp.640 - 655

ISSN
1069-5869
URI
http://hdl.handle.net/10203/95666
Appears in Collection
MA-Journal Papers(저널논문)
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