| 智能天线在CDMA2000 1x EV-DO中的实现方案 |
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| 引用本文： | 贾向东,赵来强.智能天线在CDMA2000 1x EV-DO中的实现方案[J].南京邮电大学学报(自然科学版),2009,29(4):79-84. |
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| 作者姓名： | 贾向东 赵来强 |
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| 作者单位： | 1. 南京邮电大学,通信与信息工程学院,江苏,南京,210003;西北师范大学,数学与信息科学学院,甘肃,兰州,730070
2. 南京邮电大学,通信与信息工程学院,江苏,南京,210003 |
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| 摘 要： | 讨论了智能天线技术及其在CDMA2000 1x EV-DO标准中的应用,否定了有关智能天线应用的传统观点:智能天线最适合用于上下行链路同频点的TDD(时分双工)系统.依据1x EV-DO标准支持上下行链路工作于FDD CDMA/TDMA模式和智能天线(SA)的定向收发信原理,对智能天线技术在CDMA2000 1x EV-DO标准中的实现提出了两种实现方案.两种方案需要估计出上行链路用户的DOA后,即可用一副SA实现单一载波上多个CDMA用户的定向接收,再将该DOA及时用于下行高速数据载波多个TDMA用户的定向发信,可大幅度提高上下行链路的频谱和功率的利用率.
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| 关 键 词： | 智能天线 时分双工 频分双工 来波方向 |
The Implementation Scheme of Smart Antenna in CDMA2000 1x EV-DO |
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| JIA Xiang-dong,ZHAO Lai-qiang.The Implementation Scheme of Smart Antenna in CDMA2000 1x EV-DO[J].Journal of Nanjing University of Posts and Telecommunications,2009,29(4):79-84. |
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| Authors: | JIA Xiang-dong ZHAO Lai-qiang |
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| Affiliation: | JIA Xiang-dong1,2,ZHAO Lai-qiang11.College of Telecommunications & Information Engineering,Nanjing University of Posts , Telecommunications,Nanjing 210003,China2.College of Mathematics , Information Science,Northwest Normal University,Lanzhou 730070,China |
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| Abstract: | In this paper,the application of Smart Antenna(SA) in CDMA2000 1x EV-DO is discussed,which gives a denial to the traditional viewpoint that SA is more suitably applied in TDD system holding the same up/downlink carrier frequency.For the implementation of SA in CDMA2000 1x EV-DO,we present two feasible application schemes based on directional transmitting and receiving principle of SA.In the two schemes,when DOA is obtained through uplink,multiple CDMA user can be received directionally on a single carrier s... |
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| Keywords: | 1x EV-DO |
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