具有多时滞的无线通信网络功率和速率控制

Power and rate control for wireless communication networks with multiple time delays

现有的无线通信网络功率和速率控制方法没有考虑系统中存在的多时滞情况,为此,针对具有多时滞的无线通信网络进行建模及功率和速率控制方法的研究.首先,根据无线通信网络功率和速率控制的物理机制,建立新的具有多时滞的无线通信网络功率和速率控制系统的数学模型.该模型包含速率控制中的时滞、功率控制中的时滞、状态时滞和输入时滞.在此基础上,通过预测控制和线性矩阵不等式设计鲁棒功率和速率控制器.仿真结果验证了所设计的功率和速率控制器的有效性.

Multiple time delays are not considered in exiting power and rate control methods for wireless communication networks. In order to deal with the multiple time delays, a robust power and rate control algorithm is presented. Firstly,based on the modelling and dynamics analysis of the power and rate control system, a new mathematical model is established for the power and rate control system with multiple time delays. The model contains time delays which are not only in rate control but also in power control and not only in system state but also in control input. Based on this model, a robust power and rate controller is designed by using predictive control approach and linear matrix inequality.Simulation results verify the effectiveness of the proposed controller.