Gps receiver and portable communication apparatus

Details Gps receiver and portable communication apparatus Gps receiver and portable communication apparatus

G - Physics

01

S

G01S 5/14 (2006.01) G01S 1/00 (2006.01) H04B 1/06 (2006.01) H04B 1/10 (2006.01) H04B 1/38 (2006.01)

Patent

CA 2333344

In a GPS receiver and a portable communication apparatus according to this invention, demodulation timing of the GPS received signal received from a satellite in the global positioning system is controlled in accordance with transmission timing of transmitting the CDMA transmission signal to a base station in a predetermined communication system, so that the GPS received signal can be accurately demodulated, preventing radio waves which occur during transmission of the CDMA transmission signal from interfering with the GPS received signal. Thus, the GPS received signal can be demodulated without deterioration of reception quality.

Il s'agit d'un récepteur GPS et d'un appareil de communication portatif. Selon la présente invention, la synchronisation de démodulation du signal GPS reçu d'un satellite dans le système de localisation GPS est commandée, conformément à la synchronisation de transmission du signal de transmission à accès multiple par répartition en code (CDMA) à une station de base, dans un système de communication prédéterminé. Ainsi, le signal de réception GPS peut être démodulé avec précision , ce qui empêche les ondes radioélectriques produites lors de la transmission du signal de transmission CDMA de brouiller le signal de réception GPS. Par conséquent, le signal de réception GPS peut être démodulé sans altération de la qualité de la réception.

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