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While essentially all the frequency is allocated to different wireless applications, observations provide evidence that usage of the spectrum is actually quite limited. Fortunately, cognitive radio technology offers an attractive solution to the reuse of under-utilized licensed spectrum. Therefore, proper channel selection mechanism and channel quality metric are essential to exploit the benefits...
We study distributed power control for cognitive radio in this paper. The cognitive radio environment of multiusers is viewed as a non-cooperative game. In the condition of incomplete information, the efficient power control for two users can be realized by finite repeated gaming. If the repeated times M satisfy certain term, the two users can cooperate in the preceding phase of the repeated gaming,...
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