在比较蜂窝制系统和大区制系统功率控制技术的区别的基础上，讨论了大区制码分多址（ＣＤＭＡ）移动通信中的功率控制算法，提出了采用开环控制与闭环控制配合的实现方案，并进行了相应控制算法的仿真。结合大区制系统的特点，分析了算法中相应参数的设置。该文对于大区制ＣＤＭＡ移动通信系统的设计具有参考价值 Based on the difference between the power control technology of the cellular system and that of the large area system, the power control algorithm in the CDMA system is discussed, and the open loop control and closed-loop control are proposed Realize the scheme, and carry on the simulation of the corresponding control algorithm. Combined with the characteristics of large area system, the corresponding parameters in the algorithm are analyzed. This article is of great value to the design of CDMA mobile communication system in large area