A Cooperation Strategy Based on Game Theory in Cooperative UWB Networks

In most research, cooperation is associated with a node´s willingness to sacrifice resources for the benefit of other nodes in the networks. But in WAPN applications especially in power limited UWB networks, nodes are independent selfish individuals and they do not voluntary to help other nodes. Cooperation strategy based on the game theory method is studied here. An unsymmetrical system model is constructed, and a price game based on a new payoff function is proposed to describe the cooperation in this model. The proposed pricing game is shown to converge to Nash equilibrium by the iteration algorithm, which effectively increases the payoffs of the users and the system.