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- Franz Hlawatsch, G.F. Boudreaux-Bartels
- IEEE Signal Processing Magazine
- 1992

A tutorial review of both linear and quadratic representations is given. The linear representations discussed are the short-time Fourier transform and the wavelet transform. The discussion ofâ€¦ (More)

- Shubha Kadambe, R P Murray, G.F. Boudreaux-Bartels
- IEEE Transactions on Biomedical Engineering
- 1999

In this paper, the authors describe a QRS complex detector based on the dyadic wavelet transform (D/sub y/WT) which is robust to time-varying QRS complex morphology and to noise. They design a splineâ€¦ (More)

- Manuel Davy, Christian Doncarli, G.F. Boudreaux-Bartels
- IEEE Signal Processing Letters
- 2001

Time-frequency representations (TFRs) are efficient tools for nonstationary signal classification. However, the choice of the TFR and of the distance measure employed is critical when no priorâ€¦ (More)

- Ozan Akay, G.F. Boudreaux-Bartels
- IEEE Signal Processing Letters
- 1998

Inspired by the recent popularity of the fractional Fourier transform (FRFT) and motivated by the use of Hermitian and unitary operator methods in signal analysis, we introduce a new unitaryâ€¦ (More)

- Ozan Akay, G.F. Boudreaux-Bartels
- Conference Record of Thirty-Second Asilomarâ€¦
- 1998

We demonstrate the use of the fractional Fourier transform (FRFT) in excising broadband, linear FM (chirp) type interferences in spread spectrum communication systems. This method is predicated onâ€¦ (More)

- Antonia Papandreou-Suppappola, B.-G. Iem, R Murray, G.F. Boudreaux-Bartels
- Conference Record of The Thirtieth Asilomarâ€¦
- 1996

The exponential class (EC) quadratic time-frequency representations (QTFRs) are well-suited for analyzing signals passing through exponentially dispersive systems. We consider some importantâ€¦ (More)

- B.-G. Iem, Antonia Papandreou-Suppappola, G.F. Boudreaux-Bartels
- IEEE Signal Processing Letters
- 2000

We propose a new class of time frequency (TF) symbols covariant to time shifts and frequency shifts on a random process. The new TF symbols are useful for analyzing linear time-varying systems orâ€¦ (More)

Linear fractionally invariant systems: fractional filtering and correlation via fractional operators

- Ozan Akay, G.F. Boudreaux-Bartels
- Conference Record of the Thirty-First Asilomarâ€¦
- 1997

Using fractional operators, we formulate linear fractionally invariant systems as a generalization of linear time invariant and linear frequency invariant systems. We give explicit expressions forâ€¦ (More)

- R Murray, Antonia Papandreou-Suppappola, G.F. Boudreaux-Bartels
- Conference Record of the Thirty-First Asilomarâ€¦
- 1997

We propose a new higher order time-frequency representation (TFR), the higher order generalized warped Wigner distribution (HOG-WD), by warping the higher order Wigner distribution. The HOG-WD isâ€¦ (More)

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