CDMA系统中的分集接收技术研究pdf,CDMA系统中的分集接收技术研究邢台职业技术学院学报2010年第1期采用QPSK调制,噪声采用加性高斯白噪声,合并方法为最人比值合并。未采用RAKE接收机解调后的信号如图2所示,采用RAKE接收机解调后的信号如图3所示。0000080m亿图2未采用RAKE接收机的接收信号波形图3采用Rake接收机输出信号波形图2中由于多径信号的干扰,使得接收到的解调信号效果不理想,图3中,由于采用了RAKE接收机,是信号质量得到了眀显改善。说明RAKE接收机在采取多径合并后,能更有效的收集信号能量,恢复出原始信号参考文献1l吴伟陵移动通信中的关键技术[M.北京:北京邮电大学出版社,20012]邬国扬CDMA数字峰窝系统M西安:西安电子科技大学出版社,2001「3]郭梯云,杨家伟,李建东数字移动通信M北京:人民邮电出版社,2001Research of Diversity Reception in CDMA SystemsLIAN Hua, CUI Hui-min, ZHAO Rui-mei, HU Bo-ning, WANG Ya-fang(Hebei university of Science and Technology, Shijiazhuang, Hebei 050000, ChinaAbstract: In the mobile communication systems diversity reception technology is used widely. This paperintroduces the diversity reception technology and application in CDMa mobile communication networksfocusing on analysis of the principle and performance of raKe receiverKey words: diversity reception; multi-path interference; RAKE receiver(责任编辑李建武)