Process and device for generating random controlled...

Details Process and device for generating random controlled... Process and device for generating random controlled...

H - Electricity

03

B

H03B 29/00 (2006.01) G06J 1/00 (2006.01) G07C 15/00 (2006.01) H03M 1/00 (2006.01)

Patent

CA 2367278

A method and device for the generation of a random signal, comprising: A first step (a) for the generation of a pseudo-random signal, a second step (b) for the filtering (F 1 ) of the signal coming from the step (a) to obtain a signal x(t) having a predetermined spectral envelope H(f), a third step (c) in which a non-linear finction g is applied to the signal x(t) so as to form a signal y(t) and create overshoots on the edges of the histogram of the signal y(t), a fourth filtering (F 2 ) step (d) used to smoothen the overshoots of the histogram of the signal y(t), compensate for the effect of the non-linearity and carry out an additional filtering at (F 1 ). Application to a system of analog-digital conversion or digital-analog conversion.

Procédé et dispositif de génération d'un signal aléatoire comportant: .cndot. une première étape (a) de génération d'un signal pseudo-aléatoire, .cndot. une deuxième étape (b) de filtrage (F1) du signal issu de l'étape (a) pour obtenir un signal x(t) ayant une enveloppe spectrale prédéterminée H(f), .cndot. une troisième étape (c) où une fonction non-linéaire g est appliquée au signal x(t) de façon à former un signal y(t) et pour créer des remontées ou overshoots sur les bords de l'histogramme du signal y(t), .cndot. une quatrième étape (d) de filtrage (F2) permettant de lisser les remontées ou overshoots de l'histogramme du signal y(t), de compenser l'effet de la non-linéarité et d'effectuer un complément de filtrage à (F1). Application dans un système de conversion analogique-numérique ou numérique-analogique

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