CDMA卫星通信系统功率控制研究  

Study on Power Control of CDMA Satellite Communication System

作　　者：卞瑜[1] 黄国策[1] 

机构地区：[1]空军工程大学电讯工程学院,陕西西安710077

出　　处：《通信技术》2008年第2期123-125,共3页Communications Technology

摘　　要：文章从卫星通信系统的功率控制原理入手,提出了一种适合CDMA卫星通信系统的功率控制方法;给出了精准的功率控制时的系统容量,通过推导给出的中断概率公式和例举的CDMA卫星通信系统实际数据,将功率控制误差对于系统容量的影响进行了仿真。仿真结果表明,当标准方差不断增大,系统的中断概率增大,系统容量随之显著减小;而采用精准的功率控制技术,可以有效改善系统性能。Starting with the principle of power control in satellite communication system,power control method of CDMA satellite communication system is proposed; system capacity of accurate power control is derived. Via the outage probability formula derived and practical data of CDMA satellite communication system, the influence of power control error on system capacity is simulated. The simulation indicates that when the square error increases, the outage probability of the system rises, while the system capacity decreases apparently; however, the system performance can be improved effectively when accurate power control technology is adopted.

关 键 词：卫星通信 CDMA 反馈环功率控制 中断概率 容量 

分 类 号：TN967.1[电子电信—信号与信息处理]