Method and system for characterizing a radio channel of a...

H - Electricity – 04 – W

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H04W 24/10 (2009.01) H04B 7/005 (2006.01)

Patent

CA 2753765

A speed parameter or chan-nel quality parameter are determined in a mobile device based on variation in fre-quency offset measurement. A higher vari-ation in the frequency offset measurement reflects a poorer channel quality and a higher speed; a lower variation in the fre-quency offset measurement reflects a better channel quality and a lower speed. The pa-rameter(s) may be fed back to the system and used, for example, to make adaptive modulation and coding decisions.

Selon la présente invention, un paramètre de vitesse ou un paramètre de qualité de canal sont déterminés dans un dispositif mobile sur la base de la variation de la mesure de décalage de fréquence. Une variation plus forte de la mesure de décalage de fréquence traduit une faible qualité de canal et une vitesse plus élevée; une variation plus faible de la mesure de décalage de fréquence traduit une meilleure qualité de canal et une vitesse plus faible. Le ou les paramètres peuvent être renvoyés au système et utilisés, par exemple, pour prendre des décisions de codage adaptatif et de modulation adaptative.

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