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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 from the principle of power control in satellite communication system, this paper proposes a power control method suitable for CDMA satellite communication system. It gives the system capacity in precise power control. By deriving the probability of outage and the example of CDMA The actual data of the satellite communication system, the impact of power control error on the system capacity was simulated. The simulation results show that when the standard deviation increases, the system interrupt probability increases and the system capacity decreases significantly. However, using precise power control technology can effectively improve the system performance.