Cited by 10Mathematical Analysis and Transform MethodsDigital Filter Design and ImplementationSparse and Compressive Sensing Techniques

Fractional-Fourier-domain weighted Wigner distribution

Stankovic, L., Alieva, T., Bastiaans, M.J.·2002·Proceedings of the 11th IEEE Signal Processing Workshop on Statistical Signal Processing (Cat. No.01TH8563)

Abstract

A fractional-Fourier-domain realization of the weighted Wigner distribution (or S-method), producing auto-terms close to the ones in the Wigner distribution itself, but with reduced cross-terms, is presented. The computational cost of this fractional-domain realization is the same as the computational cost of the realizations in the time or the frequency domain, since the short-time Fourier transform of the fractional Fourier transform of a signal corresponds to the short-time Fourier transform of the signal itself, with the window being the fractional Fourier transform of the initial one. The appropriate fractional domain is found from the analysis of the second-order fractional Fourier transform moments. Numerical simulations show a qualitative advantage in the time-frequency representation, when the calculation is done in the optimal fractional domain.

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Crossref · 10.1109/ssp.2001.955287

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14 of 14 references verified0 citation errors · 0 not checkable

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  • For mono-component signals, the required fractional Fourier transformation order can be found based on the fractional moments of the signal.

    “Alternatively, for mono-component signals, the required fractional Fourier transformation order can also be found based on the fractional moments of the signal.”

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Authors
Stankovic, L., Alieva, T., & Bastiaans, M. J.
Affiliations
Eindhoven University of Technology (NL)
Venue
Proceedings of the 11th IEEE Signal Processing Workshop on Statistical Signal Processing (Cat. No.01TH8563)
Publisher
IEEE
Published
2002-11-13
Pages
321-324
ISSN
2373-0803 (ISSN-L)
OpenAlex
W2155487956
Cited by
10
References
14
Citations by year
2016: 1 · 2012: 1
FWCI
3.15
Type
conference paper
Language
en
Open access
closed
Locations
  • IEEE Statistical Signal Processing Workshop (SSP) (publishedVersion)
  • TU/e Research Portal (submittedVersion)
Topics
  • Physical Sciences › Mathematics › Applied Mathematics › Mathematical Analysis and Transform Methods
  • Physical Sciences › Computer Science › Signal Processing › Digital Filter Design and Implementation
  • Physical Sciences › Engineering › Computational Mechanics › Sparse and Compressive Sensing Techniques
Keywords
S-method, fractional Fourier transform, time-frequency representation, short-time Fourier transform, second moment, computational cost

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