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Wavelet-like structure of rational models for power-law processes
Conference proceeding

Wavelet-like structure of rational models for power-law processes

B Onaral, G Maskarinec, G Sisli and W.A Berger
Proceedings of 16th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, v 2, pp 1212-1213
1994

Abstract

Band pass filters Discrete wavelet transforms Frequency Physics Poles and zeros Power engineering and energy Power engineering computing Power system modeling Prototypes Wavelet coefficients
Scale invariant rational systems are useful for modeling of 1/f processes which exhibit a power-law spectral density over a finite band. In this paper, we show that the impulse response of a scale-invariant rational system can essentially be expressed as a linear combination of dilations of a protoype waveform in the form of a damped complex exponential. Hence, scale-invariant rational systems exhibit a discrete wavelet-like structure where the term wavelet-like refers to the fact that there are no translations of the prototype and that the prototype does not satisfy the admissibility condition required of a wavelet. We also point out that this wavelet-like structure can be viewed as a deterministic version of the wavelet-based models for nearly-1/f processes.

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Engineering, Biomedical
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