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多业务类分层结构CDMA系统下行链路的功率控制 被引量:3

Forward Link Power Control of Multi-class Hierarchical CDMA Cellular System
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摘要 对支持不同QoS要求的多业务类分层结构CDMA系统下行链路的功率控制进行了研究,提出了该系统下行链路的一种功率控制算法。从系统基站发射功率资源受限以及信道受到路径损耗和阴影衰落的影响出发,同时考虑系统中存在软切换的情况,得到了一种系统移动台用户所需基站分配功率因子确定原则以及系统中断概率的表达式。最后,利用MonteCarlo方法对系统进行了仿真,给出了系统负载、路径指数、阴影衰落标准差、用户密度比和基站最大发射功率比与系统中断概率关系的仿真结果以及分析。 Hierarchical CDMA systems, supporting multi-class services with various qualities of service(QoS) requirements, are studied. A power control scheme of forward link of this kind of hierarchical CDMA system is proposed. From the transmit power limit of a base station, taking account of path loss ,shadow shading and soft handover, a certain decided rule of the distribution power factor and an expression of system outage probability are got. At the end,the multi-class hierarchical CDMA cellular system is simulated with using the Monte Carlo method.
出处 《中山大学学报(自然科学版)》 CAS CSCD 北大核心 2005年第2期34-38,共5页 Acta Scientiarum Naturalium Universitatis Sunyatseni
基金 教育部高等学校优秀青年教师教学科研奖励计划资助项目 广东省"千百十"人才工程基金资助项目(Q02012)
关键词 码分多址 功率控制 分层蜂窝结构 下行链路 CDMA power control hierarchical cellular architectures forward link
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参考文献8

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共引文献9

同被引文献27

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