Journal
IEEE TRANSACTIONS ON SIGNAL PROCESSING
Volume 63, Issue 5, Pages 1335-1344Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TSP.2015.2391077
Keywords
Time-frequency; reassignment; synchrosqueezing; AM/FM; multicomponent signals
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Funding
- French Agence Nationale de la Recherche (ANR) [ANR-13-BS03-0002-01]
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This paper considers the analysis of multicomponent signals, defined as superpositions of real or complex modulated waves. It introduces two new post-transformations for the short-time Fourier transform that achieve a compact time-frequency representation while allowing for the separation and the reconstruction of the modes. These two new transformations thus benefit from both the synchrosqueezing transform (which allows for reconstruction) and the reassignment method (which achieves a compact time-frequency representation). Numerical experiments on real and synthetic signals demonstrate the efficiency of these new transformations, and illustrate their differences.
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