Adaptive Power Control in Cognitive Radio Based Wireless Networks Using Game Theory
Nilimesh Halder, Ju Bin Song · ITC-CSCC :International Technical Conference on Circuits Systems, Computers and Communications · 2007
Radio resource management (RRM) is one of the most challenging and one of the most important aspects of modern wireless communication network. An intelligent radio resource management scheme can significantly improve system performance. So distributed solutions to the resource management are motivated by the need to cope with the complexity in modern communication networks. The purpose of this paper is to analyze the resource management in cognitive radio wireless networks from the viewpoint of game theory. The main focus is to model and analyze an adaptive power control scheme in cognitive radio based wireless network using non cooperative games. Our approach is based on a model for the level of satisfaction and utility a wireless user derives from using the system. Using this model, we show a distributed adaptive power control scheme that maximizes utility of each user of the network. Formulating this as a noncooperative game we show conditions for feasibility of such power control as well as existence and uniqueness of the Nash equilibrium achieved by the game.