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Space Time Joint Processing for Time Slotted CDMA Uplink

机译:时隙CDMA上行链路的时空联合处理

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摘要

In CDMA cellular mobile radio systems, the transmission quality and the system performance is mainly determined by the interference both from intracell and intercell. Joint detection (JD) and smart antenna (SA) are effective techniques which can be used to combat these interference. For the uplink of a time slotted CDMA system, most of the intracell interference can be eliminated by using joint detection with coherent receiver antenna diversity. So, the intercell interference plays the most important role on the system performance. In this paper, space time joint processing schemes for time slotted CDMA uplink are investigated. First, JD algorithms with coherent receiver antenna diversity (CRAD) are given. Then, some algorithms for estimating the intercell interference covariance matrix are studied, and a novel partition algorithm is proposed. Simulation results show that these algorithms can lead to considerable performance enhancement.
机译:在CDMA蜂窝移动无线电系统中,传输质量和系统性能主要由小区内和小区间的干扰决定。联合检测(JD)和智能天线(SA)是可以用来抵抗这些干扰的有效技术。对于时隙CDMA系统的上行链路,可以通过使用具有相干接收机天线分集的联合检测来消除大多数小区内干扰。因此,小区间干扰对系统性能起着最重要的作用。本文研究了时隙CDMA上行链路的时空联合处理方案。首先,给出了具有相干接收机天线分集(CRAD)的JD算法。然后,研究了估计小区间干扰协方差矩阵的一些算法,并提出了一种新颖的分区算法。仿真结果表明,这些算法可以显着提高性能。

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