摘要
针对TD-SCDMA系统的上行链路,本文提出了一种新型的基于信干比预测的内环功率控制算法。利用自适应滤波器输入信号的正交分量作为权向量的调整方向,根据前几帧和当前帧测得的信干比对下一帧信干比进行预测,基站依据预测的结果对发射功率进行控制。仿真结果表明:与传统功率控制方法相比,该方法控制精度高,实现简单,收敛速度快。
A novel SIR-Predictive-Based Forward Link Power Control for the uplink of TD-SCDMA has been proposed. The current and previous SIR measurements are used to predict the optimum SIR in the next time step by using an orthogonal part of the input signal to update the weight vector of the linear transversal filter. The base station controls the output power of the forward link based on the prediction. Simulation results show that the proposed power control algorithm can achieve a higher control precision and improve the convergence speed while keeping implementation simple.
出处
《信号处理》
CSCD
北大核心
2005年第5期494-497,共4页
Journal of Signal Processing
