Power efficient receiver

H - Electricity – 04 – B

Patent

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Details

H04B 1/16 (2006.01) G01S 1/00 (2006.01) G01S 5/00 (2006.01) G01S 5/14 (2006.01) G06F 17/15 (2006.01) H04B 1/707 (2006.01)

Patent

CA 2258692

A direct sequence spread spectrum receiver samples an incoming signal and stores the sample in memory. Power is then inhibited to the tuner of the receiver to minimize power consumption. The signal sample may be read from memory when necessary to process the signal without further signal acquisition. Power to other receiver sections may be selectively controlled to minimize power consumption. Such a receiver is useful in global positioning satellite (GPS) signal processing where the receiver has a limited power supply.

Récepteur à spectre étalé en séquence directe échantillonnant les signaux d'entrée pour mettre en mémoire les échantillons. Après l'opération, la puissance injectée dans le syntoniseur du récepteur est inhibée pour réduire au minimum la consommation. Le cas échéant chaque échantillon reste lisible dans la mémoire pour effectuer un traitement des signaux sans acquisition de signal supplémentaire. On peut moduler la puissance injectée dans les autres parties du récepteur afin de réduire au minimum la consommation. Ce type de récepteur est utile dans le traitement des signaux du système mondial de radio-repérage (GPS), où la puissance absorbée dans le récepteur est limitée.

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