Two Banach spaces of atoms for stable wavelet frame expansions
Journal of Approximation Theory
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Estimates of frame bounds for wavelet frames generated by discrete sets in phase space satisfying only a certain density condition are deduced. Numerical examples show that these estimates, which are the sharpest results of this kind known to the authors, are rather poor compared to Daubechies' estimates (see ibid., vol.36, no.5, p.961-1005, 1990) for the usual discrete wavelet transforms