Data communication in a wireless communication system using...

H - Electricity – 04 – B

Patent

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H04B 1/02 (2006.01) H04B 1/06 (2006.01) H04B 7/005 (2006.01) H04B 7/02 (2006.01) H04J 13/00 (2006.01)

Patent

CA 2576141

A method of controlling data communication in a wireless communication system comprises measuring channel quality from data received from a base station having multiple antennas, wherein the base station and a mobile station are in a closed loop space-time coding (STC) communication. The method also comprises determining a first weight matrix based on a number of the multiple antennas of the base station, the weight matrix comprising weight elements. The method also comprises determining a second weight matrix from the first weight matrix in response to a predetermined condition, wherein the second weight matrix is associated with controlling data output using the multiple antennas of the base station for subsequent transmission. The method also comprises providing a number of STC outputs to the base station, wherein the number of STC outputs is associated with the second weight matrix.

L'invention concerne un procédé de commande de communication de données dans un système de communication sans fil, consistant à mesurer la qualité de canal à partir des données reçues d'une station de base équipée de multiples antennes, ladite station de base étant en communication avec une station mobile par codage spatio-temporel (STC) à boucle fermée. Le procédé consiste également à déterminer une première matrice de pondération basée sur le nombre d'antennes multiples de la station de base, la matrice de pondération comprenant des éléments de pondération. Le procédé consiste également à déterminer une seconde matrice de pondération à partir de la première matrice de pondération en réponse à un état prédéterminé, la seconde matrice de pondération étant associée à la commande de sortie de données à l'aide des multiples antennes de la station de base pour une transmission ultérieure. Le procédé consiste également à transmettre un certain nombre de sorties STC à la station de base, le nombre de sorties STC étant associé à la seconde matrice de pondération.

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