A synchronization system and method for digital...

H - Electricity – 04 – L

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H04L 7/04 (2006.01) H04L 27/233 (2006.01) H04L 7/10 (2006.01) H04L 27/00 (2006.01)

Patent

CA 2280689

A frequency offset synchronizer (38) is provided which includes an initial timing estimator (50), and a combined frequency offset and refined timing estimator (52). The initial timing estimator (50) determines a rough timing value from input data samples and a reference synchronisation word. The combined frequency offset and refined timing estimator (52) operates in the close vicinity of the rough timing estimate and determines the frequency offset and synchronization timing from the input data samples and the reference synchronisation word.

L'invention concerne un synchroniseur de décalage de fréquence qui comporte un estimateur de cadence initial et un estimateur combiné de décalage de fréquence et de cadence raffinée. L'estimateur de cadence initial détermine une valeur brute de la cadence, à partir d'échantillons de données d'entrée, ainsi qu'un mot de synchronisation de référence. L'estimateur combiné de décalage de fréquence et de cadence raffinée fonctionne à proximité immédiate de l'estimation brute de la cadence et établit le décalage de fréquence et la cadence des mots de synchronisation à partir des échantillons de données d'entrée et du mot de synchronisation de référence.

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