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码分多址个人通信系统(CDMA-PCN)中抗多径干扰技术的研究具有重要的意义。在CDMA系统中采用多径分集(RAKE)接收是抗多径干扰的一种有效方法,即通过相关解扩技术进行多径分离,再根据某种准则组合,达到改善抗干扰特性的目的。在对几种RAKE接收方案进行分析的基础上提出的以导引信号为探测信号的自适应多径分集接收(ARDP)实验系统的设计方案,经实验验证具有可行性。
Research on anti-multipath interference technology in Code Division Multiple Access Personal Communication System (CDMA-PCN) is of great significance. In the CDMA system using multipath diversity (RAKE) reception is an effective anti-multipath interference method, that is, through the relevant despreading technology for multi-path separation, and then combined according to some criteria to achieve the purpose of improving anti-jamming characteristics. Based on the analysis of several RAKE receiving schemes, the design scheme of adaptive multipath diversity receiving (ARDP) pilot system using pilot signals as detection signals is proved to be feasible by experiments.