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智能天线等实用RAKE接收机性能比较 被引量：2

Performance comparison between smart antennas and the other applicable RAKE
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摘要 RAKE接收机是CDMA收信机的基本组成部分。随着移动通信的发展,出现了多种不同类型的RAKE接收机,为了判定它们的应用价值,在给出智能天线定向RAKE(DIRAKE)接收机基带实现模型、多径信号相干解调RAKE(CORAKE)和传统RAKE(CLRAKE)接收机模型及具体实现方案的基础上,讨论了它们在多径接入和多重接入干扰时的性能。利用计算机性能模拟结果可以判定,CORAKE接收机相对于CLRAKE接收机的信干比(信号/干扰噪声比)增益GSA较高,且易于实现;基带波束形成时,DIRAKE接收机的GSA随MS的方位变化极大,在许多方向上存在性能陷阱,会造成系统工作的极大不稳定,此时即使可以在某些方向取得一些增益,也是不可取的。 RAKE is the basic component of CDMA receivers.Many different types of RAKE receivers appeared with the development of mobile telecommunications.It is necessary to evaluate their application value.In this paper,the model of base-band realization of DIRAKE receiver,CORAKE and CLRAKE and the specific realization of them were put forward with their performance discussed when multi-path interference（MPI） and multi-access interference（MAI） existed.The result of performance simulation of computer indicate that CORAKE receiver gains（GSA）are higher than that of CLRAKR and easier to implement.When the beam is formed in base-band,the GSA of DIRAKE is influenced greatly by the change of MS position,with its performance defects in many directions,which lead to great instability to the system.For this situation,it is unusable even though some gains could be achieved in some other directions.
作者 傅海阳 邓永前 韩友才
机构地区 南京邮电大学通信与信息工程学院
出处 《重庆邮电大学学报（自然科学版）》 北大核心 2010年第3期269-276,324,共9页 Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)
基金 国家"973"课题(2007CB310607)~~
关键词 智能天线 CDMA RAKE接收 信干比增益 smart antenna CDMA RAKE receiver signal interference rate gain（GSA）
分类号 TN929.53 [电子电信—通信与信息系统]
  • 相关文献

参考文献15

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共引文献10

同被引文献15

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重庆邮电大学学报（自然科学版）
2010年 第3期

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