Method and apparatus for controlling transmission energy in...

H - Electricity – 04 – B

Patent

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H04B 7/005 (2006.01) H04B 7/216 (2006.01)

Patent

CA 2376194

The present invention is a novel and improved method and apparatus for control transmission energy. The present invention describes a closed loop power control system that operates in conjunction with a transmitter (64, 66) using orthogonal transmit diversity. In a first embodiment of the present invention, the receiver evaluates the signal to noise ratio (SNR) of the two components of the signal. A weighted sum of these two components emphasizing the weaker of the two signals is generated and used in the generation of the power control commands. In a second embodiment of the present invention, the SNR of the two component signals are calculated and two separate power control commands are generated based on a corresponding one of the calculated SNR values.

La présente invention concerne de nouveaux procédé et dispositif améliorés de contrôle de transmission d'énergie. Cette invention concerne un système de contrôle de puissance à boucle fermée qui fonctionne conjointement avec un émetteur (64, 66) utilisant la diversité de transmission orthogonale. Dans un premier mode de réalisation, le récepteur évalue le rapport signal/bruit (RSB) des deux composantes du signal. Une somme pondérée de ces deux composantes accentuant le plus faible des deux signaux est générée et utilisée dans la production des commandes de contrôle de puissance. Dans un second mode de réalisation, Le RSB des deux signaux à composantes sont calculés et deux commandes de contrôle de puissance séparées sont générées sur la base d'une valeur RSB correspondante.

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