Analysis of BER Performance in Presence of Nonlinear Distortion Due to PD-HPA in Downlink DS-CDMA Signals ABSTRACT: A predistorter-high power amplifier (PD-HPA) pair has become a common practice in wireless Communication to compensate for nonlinear distortion due to HPA. However, the PD-HPA pair still produces severe signal distortionwhen the input signal exceeds the PD-HPA's saturation level. The effects of such distortion on bit error rate (BER) degradation in downlink direct sequence-code division multiple access signals (DS-CDMA) are analyzed. We establish which signal characteristics at the HPA input are the factors contributing to BER. Assuming that the baseband CDMA signal is characterized as a complex Gaussian process, we develop analytic expressions for theBER and the contributing factors to BER. Did you like this research project? To get this research project Guidelines, Training and Code... Click Here facebook twitter google+ linkedin stumble pinterest Adaptive Active Constellation Extension Algorithm forPeak-to-Average Ratio Reduction in OFDM Oversampling to Reduce the Effect of Timing Jitter onHigh Speed OFDM Systems