S/n measuring circuit and method, transmitting electric...

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Details

G01R 29/26 (2006.01) H04B 7/005 (2006.01) H04B 17/00 (2006.01) H04Q 7/34 (2006.01)

Patent

CA 2243133

In a transmitting electric power control apparatus, non-linear bias characteristic in S/N measurement is previously obtained by measurement, and a conversion table for realizing this reverse characteristic is created in an S/N measuring circuit 10, and when a measured S/N value is output from the dividing circuit 9, the table conversion circuit 1 receives this S/N value as an input and outputs a corrected S/N value from the above-described conversion table, whereby it is possible to provide the S/N measurement with high accuracy, and this corrected and measured S/N is compared with a target S/N, and a demand for increasing and decreasing transmitting electric power is transmitted to a mobile station 53, and, in the mobile station 53, in accordance with the instruction from the base station 20, the transmitting electric power is determined and a coded information signal is transmitted.

Dans un appareil de régulation de l'énergie électrique transmise, on obtenait auparavant une caractéristique de polarisation non linéaire lorsqu'on mesurait le rapport signal/bruit (S/B). La présente méthode consiste à créer une table de conversion pour obtenir cette caractéristique inverse dans un circuit de mesure du rapport S/B (10). Lorsque le circuit diviseur (9) obtient une valeur S/B, le circuit de la table de conversion (1) la reçoit comme donnée d'entrée et produit une valeur S/B corrigée en se servant de la table de conversion, ce qui permet d'obtenir une mesure S/B très précise. Cette valeur S/B, mesurée et corrigée, est comparée à une valeur de référence S/B, et une demande d'augmentation et de diminution de l'énergie électrique transmise est expédiée à une station mobile (53). On détermine alors dans cette station mobile (53) quelle sera la quantité d'énergie électrique transmise d'après les indications reçues de la station de base (20). La station mobile effectue cette tâche en transmettant un signal d'informations.

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