Journal
FILOMAT
Volume 33, Issue 11, Pages 3587-3597Publisher
UNIV NIS, FAC SCI MATH
DOI: 10.2298/FIL1911587S
Keywords
Composite dilations; Composite wavelet system; Wavelet frames; AB-wavelet systems; Fourier transforms; Generating functions
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Funding
- NBHM, DAE, Govt. of India [2/48(8)/2016/NBHM(R.P.)/RD II/13924]
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In order to provide a unified treatment for the continuum and digital realm of multivariate data, Guo, Labate, Weiss and Wilson [Electron. Res. Announc. Amer. Math. Soc. 10 (2004), 78-87] introduced the notion of AB-wavelets in the context of multiscale analysis. We continue and extend their work by studying the frame properties of AB-wavelet systems {D(A)D(B)Tk psi(l) (k is an element of Z(n);1 <= l <= L)} in L-2 (R-n). More precisely, we establish four theorems giving sufficient conditions under which the AB-wavelet system constitutes a frame for L-2(R-n). The proposed conditions are stated in terms of the Fourier transforms of the generating functions.
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