Abstract: In order to increase the validity of uplink power control in Ka band satellite communication(30 GHz/20 GHz), an algorithm of uplink adaptive power control is presented. The method based on the Autoregressive Moving Average(ARMA) model can predict the rain attenuation of uplink from the rain attenuation of downlink measured and improve the precision of power control. Simulation results show that better compensation effects for rain attenuation can be achieved.

Key words: Ka band, satellite communication, power control, rain attenuation

摘要： 为提高Ka频段(30 GHz/20 GHz)卫星通信系统上行链路功率控制的可靠性，提出一种上行链路自适应功率控制算法。该方法基于自回归滑动平均模型，能由测量到的下行链路降雨衰减值预测出上行链路的降雨衰减值，从而提高功率控制精度。仿真结果表明，该方法对降雨衰减具有较好的补偿效果。

关键词: Ka频段, 卫星通信, 功率控制, 降雨衰减

CLC Number: 

• TN927