文章基本信息

标题：Analysis of BER Degradation for Transmitted Downlink DSCDMA Signals
本地全文：下载
作者：Ashok Ch ; Murali Mohan K V ; David Solomon Raju Y 等
期刊名称：International Journal of Computer Technology and Applications
电子版ISSN：2229-6093
出版年度：2011
卷号：2
期号：6
页码：2085-2090
出版社：Technopark Publications
摘要：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 distortion when 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 and the factors contributing to BER. Assuming that the baseband CDMA signal is characterized as a complex Gaussian process, we develop analytic expressions for the BER and the contributing factors to BER
关键词：CDMA; nonlinear distortion; predistortion