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Positive time-frequency distributions based on joint marginal constraints
dc.contributor.author | Rodríguez Fonollosa, Javier |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions |
dc.date.accessioned | 2008-02-04T10:13:41Z |
dc.date.available | 2008-02-04T10:13:41Z |
dc.date.created | 1995-02-24 |
dc.date.issued | 1996-08-01 |
dc.identifier.citation | 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. |
dc.identifier.issn | 1053-587X |
dc.identifier.uri | http://hdl.handle.net/2117/1556 |
dc.description.abstract | This correspondence studies the formulation of members of the Cohen-Posch 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. It is concluded 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 marginals are derived based on a "direction invariance" criterion on the time-frequency plane that are directly related to the fractional Fourier transform. |
dc.format.extent | 2086-2091 |
dc.language.iso | eng |
dc.publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal |
dc.subject.lcsh | Signal processing |
dc.subject.lcsh | Mathematical analysis |
dc.subject.lcsh | Information theory |
dc.subject.other | Cohen-Posch distributions |
dc.subject.other | Cross-entropy measures minimization |
dc.subject.other | Direction invariance criterion |
dc.subject.other | Fractional Fourier transform |
dc.subject.other | Frequency marginals |
dc.subject.other | Information theory |
dc.subject.other | Joint marginal constraints |
dc.subject.other | Maximum entropy methods |
dc.subject.other | Minimisation |
dc.subject.other | Positive time-frequency energy distributions |
dc.subject.other | Signal representation |
dc.subject.other | Spectral analysis |
dc.subject.other | Spectrogram |
dc.subject.other | Statistical analysis |
dc.subject.other | Time-frequency analysis |
dc.subject.other | Time-frequency plane |
dc.subject.other | Time marginals |
dc.title | Positive time-frequency distributions based on joint marginal constraints |
dc.type | Article |
dc.subject.lemac | Processament del senyal |
dc.subject.lemac | Anàlisi matemàtica |
dc.subject.lemac | Teoria de la informació |
dc.contributor.group | Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions |
dc.description.peerreviewed | Peer Reviewed |
dc.rights.access | Open Access |
local.identifier.drac | 1644470 |
dc.relation.projectidctt | TIC96-0500-C10-01 |
dc.relation.projectidctt | GRQ93-3021 |
local.personalitzacitacio | true |
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