Title :
Estimation of noisy signals using time-invariant wavelet packets
Author :
Pesquet, J.-C. ; Krim, H. ; Carfantan, H. ; Proakis, J.G.
Author_Institution :
Lab. des Signaux et Syst., CNRS, Gif-sur-Yvette, France
Abstract :
Time-invariance plays a key role in many applications (e.g. signal reconstruction, identification, classification). Orthonormal wavelet and wavelet packet representations are known to be time-variant. We propose an extended wavelet packet decomposition, establish its time-invariance and give an efficient implementation. Some illustrating examples are also provided
Keywords :
parameter estimation; signal reconstruction; signal representation; wavelet transforms; noisy signals estimation; orthonormal wavelet representations; signal classification; signal identification; signal reconstruction; time-invariance; time-invariant wavelet packets; wavelet packet decomposition; wavelet packet representations; Additive noise; Estimation; Filter bank; Signal analysis; Signal reconstruction; Time frequency analysis; Uninterruptible power systems; Wavelet analysis; Wavelet packets; Wavelet transforms;
Conference_Titel :
Signals, Systems and Computers, 1993. 1993 Conference Record of The Twenty-Seventh Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-4120-7
DOI :
10.1109/ACSSC.1993.342463
