Kalman滤波器在WCDMA功率控制中的应用

摘要

介绍了一种适合于分组交换WCDMA无线网络的Kalman滤波器功率控制方法.当数据包连续传送时，信道干扰具有时域上的相关性，Kalman滤波器可用来预测干扰功率.通过干扰预测和路径增益的估计，可确定合适的符合SINR（signal-to-interference-plus-noise）要求的发送功率.给出了仿真结果，结果表明，使用Kalman滤波器的功率控制方法可以提高功率控制的性能.%A Kalman filter method for power control is studied for broadband, packet-switched CDMA wireless networks. By observing the temporal correlation of interference when transmitters send data contiguously, a Kalman filter is used to predict interference power. Based on the predicted interference and estimated path gain between the transmitter and receiver, transmission power is determined to achieve a desired signal-to-interference-plus-noise ratio (SINR). Simulation results reveal that the method of Kalman filter for power control improves its performance.