H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
H04Q 7/36 (2006.01) G01S 5/14 (2006.01) H04Q 7/32 (2006.01)
Patent
CA 2250367
Device for measuring the distance between a mobile station and a base station in a mobile radiocommunication system, the said device comprising means for determining the time of reception by the mobile station of predetermined data transmitted by the base station, the said means themselves comprising means (4) for correlating between components said to be in phase, respectively in quadrature, a modulated signal received by the mobile station, and components said to be in phase, respectively in quadrature, a reference signal generated in the mobile station and corresponding to the said predetermined data, the said means of correlation providing components, known respectively as real and imaginary, of correlation coefficients, and the said device being essentially distinguished in that it also has means (7) for determining, from the real and imaginary components of correlation coefficients, a complex value whose phase varies continuously depending on the said time of reception.
Dispositif de mesure de distance entre une station mobile et une station de base dans un système de radiocommunications mobiles, ce dispositif comportant des moyens pour déterminer l'instant de réception, par la station mobile, de données prédéterminées émises par la station de base, ces moyens comportant eux-mêmes des moyens (4) pour effectuer une corrélation entre des composantes dites en phase, respectivement en quadrature, d'un signal modulé reçu par la station mobile, et des composantes dites en phase, respectivement en quadrature, d'un signal de référence généré dans la station mobile et correspondant auxdites données prédéterminées, ces moyens de corrélation fournissant des composantes dites respectivement réelles et imaginaires de coefficients dits de corrélation, et ce dispositif étant essentiellement caractérisé en ce qu'il comporte en outre des moyens (7) pour déterminer, à partir des composantes réelles et imaginaires de coefficients de corrélation, une grandeur complexe dont la phase varie de manière continue en fonction dudit instant de réception.
Galligo Michel
Vogel Helene
Alcatel
Robic
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