On Separability, Positivity and Minimum Uncertainty in Time-frequency Energy Distributions
نویسنده
چکیده
Gaussian signals play a very special role in classical time-frequency analysis because they are solutions of apparently unrelated problems such as minimum uncertainty or positivity and separability of Wigner-Ville distributions. We investigate here some of the logical connections which exist between these diierent features, and we discuss some examples and counterexamples of their extension to more general joint distributions within Cohen's class and the aane class.
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