Abstract:

In the process of multiuser sharing spectrum, cognitive users do not collaborate together in the cognitive radio system. They always maintain rational and maximize their own utility function. Regardless of how other users take decisions, the game theory is used to study the relationship that how multiple participants make decisions. For such a spectrum sharing problem, a distributed spectrum allocation algorithm based on the game theory is put forward. The simulation results show that the cognitive users achieve a reasonable power distribution and the maximum transmission speed.