摘要
基于信号干扰比(SIR)测量的归一化功率控制在无线蜂窝系统中有着广泛的应用。论文提出TD-SCDMA系统中的基于SIR测量的二阶快速收敛分布式功率控制算法,使用当前功率和前次功率共同参与运算控制移动台发射功率。仿真结果表明,论文提出的二阶快速收敛DPC算法在相同的传播环境下比DPC和SOPC具有更快的收敛速度。
Unitary power control based on Signal-to-Interference Ratio （SIR） measurement has been widely used in cellular radio system. In this paper, we proposed a second-order fast convergence distributed power control algorithm based On SIR measurement. Applying iterative method for power updating, this algorithm uses both current power level and previous power level to adjust transmission power. Through the analyses of simulation and computational experiments that carried out, we has found that in same spreading condition, the proposed power control algorithm has faster convergence than DPC and SOPC.
出处
《信息安全与通信保密》
2007年第4期56-59,共4页
Information Security and Communications Privacy
基金
国家自然科学基金重点项目(60332030):移动宽带视频广播传输系统及关键技术研究
湖南大学自然科学重点基金项目:未来无线信道建模与仿真
关键词
SIR
功率控制
二阶
快速收敛
SIR
power control
second-order
fast convergence
