Time-frequency-based detection using discrete-time discrete-frequency Wigner distributions
نویسندگان
چکیده
منابع مشابه
Time-frequency-based detection using discrete-time discrete-frequency Wigner distributions
During the last decade, a comprehensive theory for optimum time–frequency (TF)-based detection has been developed. This was originally proposed in the continuous-time continuous-frequency case. This paper deals with detectors operating on discrete-time discrete-frequency Wigner distributions (WDs). The purpose is to discuss some existing definitions of this distribution within the context of TF...
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A discrete-time, discrete-frequency Wigner distribution is derived using a group-theoretic approach. It is based upon a study of the Heisenberg group generated by the integers mod N , which represents the group of discrete-time and discrete-frequency shifts. The resulting Wigner distribution satis es several desired properties. An example demonstrates that it is a full-band time-frequency repre...
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John M. O’ Toole Perinatal Research Centre University of Queensland Royal Brisbane & Women’s Hospital Herston, QLD 4029 Australia [email protected] Mostefa Mesbah Perinatal Research Centre University of Queensland Royal Brisbane & Women’s Hospital Herston, QLD 4029 Australia [email protected] Boualem Boashash College of Engineering University of Sharjah P.O. Box 27272 Sharjah United Arab Emira...
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We propose a property for kernel design which results in distributions for each of two classes of signals which maximally separates their energies in the time-frequency plane. Such maximally separated distributions may result in improved classification because the signal representation is optimized to accentuate the differences in signal classes. This is not the case with other time-frequency k...
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ژورنال
عنوان ژورنال: IEEE Transactions on Signal Processing
سال: 2002
ISSN: 1053-587X
DOI: 10.1109/tsp.2002.801927