The performance deterioration from nonlinear amplifier in NxDO system

Recently, 3gpp2 is discussing cdma2000 EV/DO Rev.B which supports using several independent 1x carriers together. By this way, the system occupies wider bandwidth and provides higher data rate to users. However, multi-carrier signal needs higher transmit power and has inconstant amplitude. That means amplifier may operating in a nonlinear region and result in signal distortions. This paper introduces a nonlinear amplifier model from others and studies the NxDO reverse link performance deteriorations from non-linearity under AWGN channel.