Game Over Interference Channels

With the development of the wireless communication, the power allocation facesthe green and intelligent development tendency，how to allocate the power overinterference channel now is one of the problems which need to be solved. This paperanalyses how to allocate the power form the perspectival of game theory, and does theperformance analysis and simulation validation.Firstly, in the case of information completely known over frequency-selectiveinterference channel, we model the interaction between users as a non-cooperative game,and make the channel information and strategies of every user as global information.The Stackelberg is introduced to solve the optimization problem about theprimary-secondary user transmit strategy. A primary user is prior to optimize responsestrategies, the secondary users optimize their power following to the primary user.Secondly, in the case of information incompletely known over interference channel,selfish users, who are unable completely to get global information, will takecompetition strategy with the larger probability access to channels and increasing thetransmit power to improve SINR for satisfying itself QoS. How to guess the strategiesof the competition users according to the local information is the key to optimize theuser transmission strategy. The conjectural equilibrium and iteration method areintroduced, which make the utility we compute will converge to the informationcompletely known in limited time. Seeing from the simulation, we do the allocationbetter in the part information known, too.