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Optimal Power Control in cognitive radio networks (CRNs) under interference power constraint (IPC) and quality of service (QoS) constraints is investigated in this paper. Since the sum rate maximization of cognitive users (SUs) are non-concave maximization problem, it is challenging to design an optimal power control algorithm for the SUs such that the sum rate of the SUs is maximized under the IPC...
In price-based cognitive radio networks, the Primary user (PU) can allow the Secondary users (SUs) to access by pricing if their interference power is under the Interference power constraint (IPC). The interaction between the PU and the SUs is modeled as a Stackelberg game with the consideration of the Quality of service (QoS) of the SUs. The revenue maximization problem of PU is expressed as an equivalent...
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