Carrier recovery method and apparatus having an adjustable...

Details Carrier recovery method and apparatus having an adjustable... Carrier recovery method and apparatus having an adjustable...

H - Electricity

04

B

H04B 1/16 (2006.01) H04B 1/10 (2006.01) H04L 7/033 (2006.01) H04L 27/227 (2006.01) H04L 27/34 (2006.01)

Patent

CA 2071869

A communications receiver (103) comprising a carrier recovery apparatus having an adjustable response time loop filter (123) responsive to carrier signal parameters determined by a signal processor (141) is disclosed. Signal reception under fading conditions is improved by detecting the received signal parameters in an energy level determinator (207), a rate of change of energy level determinator (209) and a look-up table value (221) corresponding to a position of TDMA time clock (219).

L'invention est un récepteur de communication (103) comportant un dispositif de récupération de porteuse ayant un filtre à boucle à temps de réponse ajustable qui réagit aux paramètres de porteuse déterminés par un processeur à signaux (141). La réception des signaux dans des conditions d'évanouissement est améliorée par la détection des paramètres du signal reçu dans un déterminateur de niveaux d'énergie (207), un déterminateur de variations de niveau d'énergie (209) et une entrée de table de consultation (221) correspondant à une position d'un signal d'horloge AMRT (219).

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