Adaptive Power Control Algorithm for Dynamical Transmitted Power Optimization in Mixed-Line-Rate Optical Networks

An adaptive power control algorithm (APCA) based on the proportional-integral-derivative (PID) algorithm with PID gains auto-tuning and particle swarm optimization (PSO) is proposed for mixed-line-rate optical networks. The APCA-PID-PSO dynamically controls the transmitted power according to the link state variations from traffic, channel impairments, as well as other channel-power coupling effects. The link state is based on the channel estimation of the quality of transmission parameters obtained from the optical performance monitors. The APCA-PID-PSO effectiveness in dynamically mitigating the power penalty under measurements' conditions with uncertainties and noise as well as under perturbations in the power dynamical is demonstrated by numerical results.