PDA DETECTOR FOR DS-CDMA COOPERATIVE SYSTEM

查看全文 作　　者：Mei [1]Zhonghui;Meng [1]Qingmin;Li [1]Xiaofei;Wu [2]Lenan

机构地区：[1]College of Telecommunication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China;[2]College of Information Science Engineering, Southeast University, Nanjing 210005, China

出　　处：《Journal of Electronics(China)》索引2009年第26卷第6期,共7页

基　　金：Supported by the National Natural Science Foundation of China (No. 60772061);Science Foundation of Nanjing University of Posts and Telecommunications (No. NY207132);the Postdoctoral Research Programs (No. 0801054B) 摘　　要：This paper considers the uplink of a cooperative Code-Division Multiple-Access (CDMA) system where parts of mobile nodes serve as source nodes while the others serve as relay nodes at any instant in time. When the non-orthogonal spreading codes are adopted,Multiple Access Interference (MAI) will exist at both the relay nodes and the base node,causing diversity gain to diminish. To mitigate MAI and exploit full advantages of cooperation,the Probabilistic Data Association (PDA) is developed at the relay nodes and the base node. Simulation results demonstrate that some performance gains can be obtained by the PDA detector over the Minimum Mean Square Error (MMSE) detector at high Signal-to-Noise Ratio (SNR) and conversely at low SNR. 关键词：CDMA系统协同系统掌上电脑探测器 PDA检测器移动节点 DS 概率数据关联

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PDA DETECTOR FOR DS-CDMA COOPERATIVE SYSTEM

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