<FONT face=Verdana>A Common Channel Establishing Algorithm Based on Game Theory in Ad Hoc Cognitive Radio Network (CRN) is proposed in this paper. However

this algorithm cannot guarantee that the cognitive radios converge to the same common channel. Then two improved algorithms which can guarantee convergence are proposed. The simulation results demonstrate that two improved algorithms can adapt to different scenarios and establish the common channel among Cognitive Users successfully through the gaming process. The channel quality can be ensured as well. In the end

this paper gives the argumentation on the algorithms’ convergence.