CDMA系统中的反向预测功率控制算法

Reverse-link predictive power control in CDMA system

根据CDMA系统反向功率控制命令帧的结构特点,提出了CDMA反向链路预测功率控制算法.该算法可以根据功率控制命令帧中各比特接收功率的不同,通过线性算法预测出基站下一个接收信号将要经历的衰落,并以此为基础形成功率控制命令,对衰落事先进行补偿.仿真表明,预测功率控制和其他功率控制算法相比,能够有效减小基站接收功率的变化,提高系统容量.

In accordance with the structural characteristics of the CDMA reverse power control command frame,a CDA reverse-link predictive power control algorithm has been proposed to predict the fading to be experienced in the next received signal and then form a power control command to compensate the expected fading effect in advance.Simulation results show that ,in comparison with other power control schemes,the predictive power control scheme can be used to efficiently reduce the variance of received power at the base station thereby improving the capacity of CDMA system.