Spectrum Allocation Algorithm Based on Game Theory

Process of spectrum allocation is equivalent of rental market in cognitive radio, in order to rent free spectrum of authorized users to cognitive users. the lessors of Spectrum( between authorized users )use the methods of competition between authorized users, Lessees of Spectrum( between cognitive users ) also used the methods of game, the spectrum allocation between authorized user and cognitive users also have methods of game, which can be analyzed by game theory. Game theory can analyze lots of policy choice, but spectrum allocation in cognitive radio network is related to the problem of allocation choice, To make performance of the whole system optimal, spectrum allocation considers not only strategies of other users have an effect on their own, but also their own strategies cause interference to other users, to solve spectrum allocation in cognitive radio networks, game theory is in an effective way.