Density and stability of wavelet frames
β
Wenchang Sun; Xingwei Zhou
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Article
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2003
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Elsevier Science
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English
β 253 KB
Density conditions including necessary ones and sufficient ones for irregular wavelet systems to be frames are studied in this paper. We give a definition of affine Beurling density of time-scale parameters and show that for irregular wavelet systems to be Bessel sequences, the time-scale parameters