H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 7/01 (2006.01) H04B 7/185 (2006.01) H04B 7/212 (2006.01)
Patent
CA 2267169
A method and apparatus for precorrecting timing and frequency in a communication system (100) that employs satellites (116, 118) to reduce timing uncertainty and frequency uncertainty due to satellite motion. A transmitted signal (410) is precorrected, or compensated (342), to account for effects based on known satellite mo tion as the transmitted signal propagates from the transmitter (120) to the satellite (116). Removing these effects reduces the amount of uncertainty in the transmitted signal when it arrives at the receiver (124), thereby making the task of signal reception easier.
Procédé et dispositif servant à effectuer la correction préalable de la synchronisation et de la fréquence dans un système de communication (100) utilisant des satellites (116, 118), de manière à limiter les incertitudes de synchronisation et de fréquence dues au mouvement du satellite. Ceci consiste à effectuer la correction préalable d'un signal émis (410), ou de l'équilibrer (342) afin de pallier aux effets basés sur le mouvement connu du satellite simultanément à la propagation de ce signal depuis l'émetteur (120) vers le satellite (116). La suppression de ces effets limite le niveau d'incertitude dans l'émission du signal quand ce dernier arrive au niveau du récepteur (124), ce qui facilite la tâche de réception de signal.
Qualcomm Incorporated
Smart & Biggar
LandOfFree
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