A method for synchronization of received signals

Details A method for synchronization of received signals A method for synchronization of received signals

H - Electricity

04

L

H04L 7/00 (2006.01) H04L 7/033 (2006.01) H04L 27/26 (2006.01)

Patent

CA 2512686

A method and apparatus provide efficient synchronization recovery at the receiver end for a digital transmission system. At the receiving end, a digital signal is received including a transmitted data portion and a guard period. A signal envelope for the received digital signal is determined, and the signal envelope is filtered to find the center of the guard period, which provides a time reference for the received digital signal. Embodiments of the present invention described herein may be used for optimal operation of a digital transmission system by efficiently recovering synchronization from a received digital signal during noisy conditions without being dependent on signal shape or requiring complicated threshold calculations.

L'invention concerne un procédé et un appareil pour assurer une resynchronisation efficace à l'extrémité de réception d'un système de transmission numérique. A l'extrémité de réception, un signal numérique, comprenant une partie de données transmises et une période de garde, est reçu. Une enveloppe de signal pour le signal numérique reçu est déterminée, puis filtrée afin de permettre de déterminer le centre de la période de garde qui fournit une référence temporelle pour le signal numérique reçu. Des modes de réalisation de l'invention peuvent être utilisés pour permettre un fonctionnement optimal d'un système de transmission numérique par resynchronisation efficace à partir d'un signal numérique reçu, dans des conditions de bruit, sans dépendance par rapport la forme du signal ou sans nécessiter des calculs de seuil complexes.

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