H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 25/02 (2006.01) H04B 7/005 (2006.01)
Patent
CA 2525232
This disclosure is directed to techniques for estimating signal-to-noise ratio (SNR) of signals received by a wireless communication device. The techniques take advantage of spatial receive diversity in a wireless communication device to achieve accurate estimates of SNR. In general, a spatial projection wiener filter function can be applied to incoming symbol estimates to support efficient computation of SNR. The estimated SNR can be used to produce power control commands for use in forward power control.
L'invention concerne des techniques servant à estimer le rapport signal/bruit de signaux reçus par un dispositif de télécommunication sans fil. Ces techniques utilisent avantageusement la réception en diversité spatiale d'un dispositif de télécommunication sans fil pour produire des estimations précises du rapport signal/bruit. De manière générale, une fonction de filtre de Wiener par projection spatiale peut être appliquée aux estimations de symboles entrants pour un calcul efficace du rapport signal/bruit. Le rapport signal/bruit estimé peut servir à produire des commandes de réglage de puissance pour le réglage de la puissance directe.
Abrishamkar Farrokh
Banister Brian
Ekvetchavit Thunyachate
Sih Gilbert C.
Qualcomm Incorporated
Smart & Biggar
LandOfFree
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