摘要
结合多用户检测技术,对于多业务CDMA移动通信系统的上行链路功率控制问题,提出了一种联合功率控制算法。考虑实际系统可能存在负载过重情况,按照业务优先级,逐步切除过载用户,以满足其他用户的QoS。对三类业务进行了仿真研究,表明所给出的联合功率控制算法比传统的功率控制算法节省用户的发射功率,可以支持更多的用户接入小区,增加系统容量。
A joint power control algorithm was proposed for the uplink power control of multi-service CDMA cellular systems combined with multiuser detection technology. Considering there are overload in the systems,remove the users according to their priority to satisfy other users＇ QoS. Simulation results of three services demonstrate the lower total transmit power consumption of the proposed algorithm rather than the traditional power control algorithm,and can support more users to join into the cell,thus the capacity of the system is increased.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2010年第4期974-977,共4页
Journal of System Simulation
基金
国家杰出青年基金(60525304)
浙江省自然科学基金(Y107657)
关键词
多用户检测
比特能量噪声比
多业务
功率控制
multiuser detection
bit energy-to-noise ratio
multi-service
power control
