Proportion-Integral Power Control for Wireless Ad Hoc Networks

Power control plays an important role in wireless communications. However, most existing power control protocols are not efficient enough to be applied in real ad hoc network systems. In this paper, we propose PIPC (Proportion-Integral Power Control), a novel closed-loop power control algorithm that can be used in conjunction with any routing protocol as long as the routing table of a node provides enough knowledge of local network topology. PIPC adaptively adjusts the transmission power for each node through an improved version of the classical PID (Proportion-Integral-Differential) control. The topology derived under PIPC is also fed back to the routing table that is used as its input. Both theoretical analysis and simulation study show that PIPC has a good performance.