衰落环境中功率控制对W-CDMA系统性能的影响

邱玲; 朱近康; 龚明

衰落环境中功率控制对W-CDMA系统性能的影响

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出版历程
- 收稿日期: 1999-10-25
- 修回日期: 2000-03-23
- 刊出日期: 2001-12-19

THE INFLUENCE OF POWER CONTROL ON THE PERFORMANCE OF W-CDMA SYSTEM IN FADING ENVIRONMENT

摘要

摘要: 功率控制是码分多址(CDMA)移动通信系统中克服远近效应问题,减小小区间干扰,提高系统容量的有效方法,同时。功率控制可以使W-CDMA系统中的不同业务达到不同的服务质量要求。但在衰落环境中,功率控制很难做到完善。在这篇文章中,作者模拟了W-CDMA系统在衰落环境中功率控制步长的选取对功率控制补偿无线信道衰落的影响,分析了功率控制对W-CDMA系统性能的影响,给出了数字计算结果,这些结果有利于进行W-CDMA系统设计。
- W-CDMA; 性能分析; 功率控制
Abstract: Power control is an effective approach to overcome near-far problem, reduce intercell interference and increase system capacity in code division multiple access (CDMA) mobile communication systems. At the same time, power control can provide different quality of service for different services on W-CDMA communication systems. However, perfect power control is very difficult to realize in fading environment. In this paper, the effect of step size of power control on the received power under shadowing and fading is simulated. The effect of power control on the capacity of W-CDMA communication system is analyzed and the numerical results are given. The results are valuable for the design of W-CDMA communication systems.

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