A method for selecting a combination of modulation and...

H - Electricity – 04 – L

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H04L 1/20 (2006.01) H04B 7/005 (2006.01) H04L 1/00 (2006.01) H04L 1/12 (2006.01) H04Q 7/38 (2006.01)

Patent

CA 2300884

A communication system that supports multiple modulation and channel coding schemes selects an optimum RF link by measuring link quality parameters, such as C/I ratio. All of the available RF links are characterized based on the measured link quality parameters by calculating mean values and variances of the parameters. Based on the characterization of the RF link, user quality values, such as user data throughput and speech quality values, are estimated. The communication system selects the RF link that provides the best user quality value.

L'invention concerne un système de télécommunications comportant de multiples schémas de modulation et de codage de canaux, qui permet de sélectionner une liaison HF optimale par la mesure de paramètres de qualité de liaison, tels que le rapport porteuse/ brouillage. Toutes les liaisons HF disponibles sont caractérisées à partir des paramètres de qualité de liaison mesurés, par le calcul de valeurs moyennes et de variances des paramètres. A partir de la caractérisation de la liaison HF, une évaluation de valeurs de qualités d'utilisateur, telles des valeurs de qualité vocale et de flux de données d'utilisateur, est effectuée. Le système de télécommunications permet de sélectionner la liaison HF qui fournit la meilleure valeur de qualité d'utilisateur.

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