A novel energy management scheme based on Best-response dynamics game in cognitive radio Ad hoc networks

Cognitive radio has been considered as promising techniques in wireless networks. However, most of previous works are focused on spectrum sharing and interference avoidance, and the energy management aspect is largely ignored. In this paper, we study power allocation in the environment of CR network without central processing unit: cognitive radio Ad hoc networks (CRAHNs). To improve the efficiency of management and the convergence speed of algorithm, we design the power sensing and adjusting scheme, and then propose iteration algorithm based on Best-response dynamics game. The maximum of total throughput is obtained by this scheme with the restriction of interference to primary users (PUs). Simulation results are presented to demonstrate the proposed scheme improved significantly in the performance with QoS demand.