τ指数距离驱动功率控制在CDMA中研究

Study on the τ-th Power of Distance Driven Control Strategy in CDMA Cellular Mobile Systems

简要阐述了CDMA通信系统的特点和功率控制的作用,提出了τ指数距离驱动功率控制算法。该算法根据用户距基站距离的不同,收发信号采用不同的功率,从而使小区内所有用户享有均匀服务。在其基础上对CDMA蜂窝通信系统的下行链路进行理论的分析,结果表明:采用τ指数功率控制的系统比没有采用功率控制的系统,其容量至少提高三倍。

The power control strategy has the important influence to the capacity and outage probability of the system. This paper has presented a theoretical analysis of forward link in a CDMA cellular system by introducing the τ-th power of distance driven control strategy. Base on the power control, the capacity and outage probability of the system are estimated and discussed. Through analysis, we can got the conclusion that the power control strategy leads to approximately threefold the capacity compared to the case without power control strategy.