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Copulas: a new insight into positive time-frequency distributions

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2 Author(s)
Davy, Manuel ; IRCCyN/CNRS, Nantes, France ; Doucet, Arnaud

We establish connections between Cohen-Posch (1985) theory of positive time-frequency distributions (TFDs) and copula theory. Both are aimed at designing joint probability distributions with fixed marginals, and we demonstrate that they are formally equivalent. Moreover, we show that copula theory leads to a noniterative method for constructing positive TFDs. Simulations show typical results.

Published in:

Signal Processing Letters, IEEE  (Volume:10 ,  Issue: 7 )