H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 7/04 (2006.01) H04L 7/033 (2006.01)
Patent
CA 2328293
The invention concerns a method for fine synchronisation on a reception signal (S) corresponding to a reference signal (TS) transmitted in a transmission channel, comprising the following steps: selecting a signal source producing a characterisation signal (X) following its passage in the transmission channel; establishing a characterisation matrix (L) to estimate the characterisation signal (X) covariance; identifying characteristic modal values which are the highest characteristic values (.lambda.¿i?) of said characterisation matrix (L); computing the source signal correlation function c(t) with the sum of characteristic vectors (v¿i?) associated with the characteristic modal values; searching said correlation function c(t) first maximum.
L'invention concerne un procédé de synchronisation fine sur un signal de réception (S) correspondant à un signal de référence (TS) émis dans un canal de transmission. Il comprend les étapes suivantes: sélection d'un signal source produisant un signal de caractérisation (X) suite à son passage dans le canal de transmission, établissement d'une matrice de caractérisation (L) pour estimer la covariance du signal de caractérisation (X), identification des valeurs propres dominantes qui sont les valeurs propres (.lambda.i) les plus élevées de cette matrice de caractérisation (L), calcul de la fonction de corrélation c(t) du signal source avec la somme des vecteurs propres (vi) associés aux valeurs propres dominantes, recherche du premier maximum de cette fonction de corrélation c(t).
Ben Rached Nidham
Dornstetter Jean-Louis
Nortel Matra Cellular
Robic
LandOfFree
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