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Wigner distribution function

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The Wigner distribution function (WDF) was first proposed in physics to account for quantum corrections to classical statistical mechanics in 1932 by Eugene Wigner, and it is of importance in quantum mechanics in phase space, cf. Wigner quasi-probability distribution. Given the shared algebraic structure between position-momentum and time-frequency conjugate pairs, it also usefully serves in signal processing, as a transform in time-frequency analysis, the subject of this article. Compared to a short-time Fourier transform, such as the Gabor transform, the Wigner distribution function can furnish higher clarity in some cases.

Wikipedia Inglés http://en.wikipedia.org/wiki/Wigner_distribution_function

Wikipedia Español http://es.wikipedia.org/wiki/Wigner_distribution_function