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In this paper, a spectrum sharing strategy in cooperative cognitive radio network (CCRN) is investigated. Specifically, a multi-phase cooperation architecture is proposed including cooperation partner selection and spectrum sharing among secondary users (SUs). The cooperation partners who are selected from SUs forward the data of primary users (PUs), and then acquire the spectrum access opportunities...
An orthogonal modulation enabled two-phase energy-efficient framework is presented for active cooperation between secondary users (SUs) and primary users (PUs) in a cognitive radio network. Since the PU has higher priority, and SUs compete for spectrum accessing, we model the power control problem as a Stackelberg game which incorporates throughput and energy consumptions into utility design. Due...
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