DS/CDMA系统上行链路的2D-Rake及PPIC接收方案  

The 2D-Rake and PPIC receiving scheme for the uplink of DS/CDAM system

作　　者：张华[1] 龚耀寰[1] 

机构地区：[1]电子科技大学电子工程学院,四川成都610054

出　　处：《电波科学学报》2002年第4期412-417,共6页Chinese Journal of Radio Science

基　　金：国防科技预研基金及中兴通信基金资助项目

摘　　要：针对DS/CDMA系统的上行链路提出了 2D Rake加上强干扰并行对消(PPIC)的接收结构。该结构利用智能天线技术在空域对DOA不同于期望信号的干扰信号进行抑制 ,同时对期望信号的相关多径分量进行收集 ,利用Rake接收机对期望信号的不相关时延分量进行时间上的分集 ,然后再对多径合成结果进行PPIC处理 ,以对天线阵主瓣内的干扰信号进行进一步的抑制。该方法不仅最大程度地增强了期望信号地能量 ,同时对所有干扰信号进行了比较完全的抑制。仿真实验表明了该接收结构的有效性。A receiving scheme including 2D Rake and PPIC is proposed for the uplink of DS/CDMA mobile communication systems. In this new scheme, smart antenna is used to cancel interferences whose DOA is different from the desired user At the same time, smart antenna can be used to collect the correlated multipath components, a Rake receiver is used to collect the uncorrelated multipah components. Then a PPIC cancels the strong interferences in the output of the 2D Rake receiver. The new scheme can not only enhance the power of the desired signal but cancel most of the interferences, which makes it a complete receiving scheme for the uplink of DS/CDMA system. The simulation results indicate the validity of this scheme.

关 键 词：上行链路 PPIC接收 DS/CDMA 智能天线 2D-Rake 并行干扰对消 移动通信 码分多址 

分 类 号：TN929.533[电子电信—通信与信息系统]