H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/76 (2006.01) H03G 3/30 (2006.01) H04B 1/04 (2006.01) H04B 7/005 (2006.01)
Patent
CA 2492477
It has now been found that in some transmitter implementations which transmit multiple code channels, for example CDMA transmitters, the observed power for each code channel at the output relative to the other code channels is dependent upon the total transmit power due to non-linearities in the transmitter. Methods and apparatus are provided which use pre-set digital gains or digital gain adjustments to compensate for the non-linearities as a function of total transmit power such that at the output, the desired relative powers are observed.
Il a maintenant été établi que pour certaines transmissions de plusieurs canaux codés, par exemple les équipements qui fonctionnent en AMRC, la puissance observée de chaque canal codé dépend de la puissance de transmission totale, eu égard aux propriétés de non-linéarité de l'émetteur-récepteur. La présente invention offre des méthodes et un appareil pour réaliser des transmissions à un gain numérique présélectionné ou à un réglage de gain numérique qui compense les facteurs de non-linéarité en tant que fonction de la puissance de transmission totale de telle sorte que le niveau relatif de puissance apparente voulue est observé.
Jiao Qingzhong
Jin Xin
Zhao Wen
Research In Motion Limited
Smart & Biggar
LandOfFree
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