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Positive time-frequency distributions based on joint marginal constraints

Autor
R. Fonollosa, Javier
Tipus d'activitat
Article en revista
Revista
IEEE transactions on signal processing
Data de publicació
1996-08
Volum
44
Número
8
Pàgina inicial
2086
Pàgina final
2091
DOI
https://doi.org/10.1109/78.533731 Obrir en finestra nova
Repositori
http://hdl.handle.net/2117/1556 Obrir en finestra nova
URL
http://ieeexplore.ieee.org.recursos.biblioteca.upc.edu/document/533731/?reload=true&arnumber=533731 Obrir en finestra nova
Resum
The authors study the formulation of members of the Cohen-Posch (1985) class of positive time-frequency energy distributions. Minimization of cross-entropy measures with respect to different priors and the case of no prior or maximum entropy were considered. They conclude that, in general, the information provided by the classical marginal constraints is very limited, and thus, the final distribution heavily depends on the prior distribution. To overcome this limitation, joint time and frequency...
Citació
Rodríguez Fonollosa, J. Positive time-frequency distributions based on joint marginal constraints. IEEE Transactions on Signal Processing, 1996, vol. 44, núm. 8, p. 2086-2091.
Paraules clau
Fourier transforms, Maximum entropy methods, Minimisation, Signal representation, Spectral analysis, Statistical analysis, Time-frequency analysis
Grup de recerca
SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions

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