NDLI: Time-Frequency Characterization using Instantaneous Moment Concept : Theory and Applications

Content Provider	IEEE Xplore Digital Library
Author	Cornu, C. Ioana, C. Quinquis, A. Stankovic, S.
Copyright Year	2006
Description	Author affiliation: ENSIETA, Brest (Cornu, C.; Ioana, C.; Quinquis, A.)
Abstract	The instantaneous frequency law (IFL) is a very important element when the physical parameters of the corresponding signal have to be evaluated. Blind equalisation, modulation recognition and mechanical diagnostic are just three domains where the signal's non-stationarity imposes the IFL estimation. Generally, an IFL is composed by slowly varying time-frequency structures separated by fast transitions which could be considered as phase discontinuities. Digital phase modulations or signals propagated trough a multi-path channel are typical examples of IFLs having fast transient parts. The common methods employed for these operations are wavelet transform and Cohen's class time-frequency representation, respectively. In this paper we propose an alternative based on the instantaneous moments. By an appropriate choice of the moment order and lag it is possible to accurately estimate both transient and slowly time-frequency parts. While this method uses one dimensional data and, thanks to its recursive structure, it is well suited for real time applications. Therefore, its real-time implementation on TMS320C6x structure is described. On the other hand, few examples on realistic data shows the practical interest for this method
Starting Page	559
Ending Page	564
File Size	6562102
Page Count	6
File Format	PDF
ISBN	1424404967
DOI	10.1109/ISIE.2006.295519
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-07-09
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Time frequency analysis Health information management Signal analysis Signal processing Polynomials Wavelet transforms Computer integrated manufacturing Laboratories Wavelet analysis Performance evaluation
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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