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Game Theory in Wireless and Communication Networks by Walid Saad, Dusit Niyato, Zhu Han

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13  Cognitive-radio networks

Cognitive radio [201] is a new paradigm for designing wireless communication systems which aims at enhancing the utilization of the radio-frequency spectrum. The motivation for cognitive radio arises from the scarcity of the available frequency spectrum. Emerging wireless applications will increase spectrum demand from mobile users. However, most of the available radio spectrum has been allocated to existing wireless systems, and only small portions of the radio spectrum can be licensed to new wireless applications. Nonetheless, a study in [143] by the spectrum policy task force (SPTF) of the Federal Communications ...

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