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We address the problem of spectrum allocation by a moderator employed in a cognitive radio (CR) network in the presence of multiple primary users (PUs). It is assumed that the moderator is uncertain about the state of the PU channel (busy or vacant) and therefore, does not have perfect knowledge about spectrum availability. In order to improve the performance, secondary users (SUs) send their sensing...
This paper addresses the problem of spectrum sharing in cognitive radios where secondary users (SUs) cooperatively sense the spectrum for identifying and accessing unoccupied spectrum bands. It is shown that spectrum sensing and sharing scenario can be modeled as a transferable utility (TU) cooperative game and that Vickrey-Clarke-Groves (VCG) auction mechanism can be used to allocate spectrum resources...
This paper addresses the problem of spectrum sharing in cognitive radios where secondary users cooperatively sense the spectrum for identifying and accessing unoccupied spectrum bands. It is shown that this scenario can be modeled as a cooperative game to allocate spectrum resources fairly to each user. Users form coalitions to jointly sense and share the spectrum. The worth of each user is calculated...
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