| TD-SCDMA系统外环功控分析 |
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| 引用本文： | 伍振兴,胡炜.TD-SCDMA系统外环功控分析[J].现代电信科技,2006(6):41-43. |
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| 作者姓名： | 伍振兴 胡炜 |
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| 作者单位： | 中国普天信息产业股份有限公司 |
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| 摘 要： | TD-SCDMA系统的闭环功控可以分为内环功控和外环功控.其中内环功控是一种快速功控,频率为200Hz,主要用来补偿lognormal慢衰落和网络内其它用户和基站带来的干扰.而外环功控是一种慢速功控,主要用来补偿信道环境变化所带来的长期的业务质量的恶化,这种恶化主要通过提高目标SIR来进行补偿.但是目标SIR的提高会增加网络的整体干扰水平,因此不能无限制的提高.通过仿真分析了外环功控目标SIR值与网络的覆盖、容量之间的关系,确定了系统由资源受限向干扰受限转变的条件.
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| 关 键 词： | 内环功控 外环功控 资源受限系统'干扰受限系统 |
| 收稿时间： | 2006-04-26 |
| 修稿时间： | 2006年4月26日 |
Analyses of Outer Loop Power Control of TD-SCDMA System |
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| Wu Zhenxing,Hu Wei.Analyses of Outer Loop Power Control of TD-SCDMA System[J].Modern Science & Technology of Telecommunications,2006(6):41-43. |
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| Authors: | Wu Zhenxing Hu Wei |
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| Abstract: | The closed loop petter control of TD-SCDMA system is divided into two categories, inner loop power control and outer loop pewee control. The former one is a kind of fast power control that works at 200Hz and mainly compensates the Iognormal shadow feeding and interference of other base stations or users in the network. The latter one is a kind of slow power control that mainly compensates the deterioration of service quality. This paper simulated the connection between target SIP, value of outer loop power control and the cnverage and capability of network. At last, it puts forward the condition to change the system from resource limited to interference limited. |
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| Keywords: | SIR |
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