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The core of cognitive radio paradigm is to introduce cognitive devices able to opportunistically access the licensed radio bands. The coexistence of licensed and unlicensed users prescribes an effective spectrum hole‐detection and a non‐interfering sharing of those frequencies. Collaborative resource allocation and spectrum information exchange are required but often costly in terms of energy and...
In this paper we report on our fundamental results and new work on building cognitive wireless networks that complete resource sharing in a local environment. We emphasize two fundamentals issues. First, a cognitive network with full cooperative nodes. Second, the cooperative and not cooperative behavior of selfish users in our network. The cooperative behavior among the radios is regularly believed...
We study energy conservation and system performance of decentralized cognitive radio network with cognitive users. Every cognitive radio (CR) user needs to sense the channel to send data, if the channel is unoccupied by a licensed user only one winner transmits its data. Hence, all other users waste their energy in sensing the licensed bands and in negotiating the resource access without managing...
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