Optimal wavelets for signal decomposition and the existence of scale-limited signals
- 1 January 1992
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
Abstract
Wavelet methods give a flexible alternative to Fourier methods in nonstationary signal analysis. The concept of band-limitedness plays a fundamental role in Fourier analysis. Since wavelet theory replaces frequency with scale, a natural question is whether there exists a useful concept of scale-limitedness. Obvious definitions of scale-limitedness are too restrictive, in that there would be few or no useful scale-limited signals. The authors introduce a viable definition for scale-limited signals, and show that the class is rich enough to include bandlimited signals, and impulse trains, among others. Moreover, for a wide choice of criteria, it is shown how to design the optimal wavelet for representing a given signal, and how to design robust wavelets that optimally represent certain classes of signals.Keywords
This publication has 3 references indexed in Scilit:
- Zero-crossings of a wavelet transformIEEE Transactions on Information Theory, 1991
- A theory for multiresolution signal decomposition: the wavelet representationPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1989
- Orthonormal bases of compactly supported waveletsCommunications on Pure and Applied Mathematics, 1988