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Device-to-device (D2D) communications as an underlaying LTE-Advanced network has proven to be efficient in improving the network performance and releasing the traffic load of eNodeB. By sharing radio resource with cellular user equipments (CUEs), D2D communications can significantly enhance the overall spectral efficiency. However, the resulting mutual interference may cancel or even outweigh the...
Admission and power control schemes play important roles in deploying cognitive radio technology to cellular networks. In this paper, we propose a method to calculate the power scale factor, introduce two pre-admission control schemes, and reformulate the problem as a multidimensional knapsack problem. In addition, we propose a novel admission and power control scheme called JAPC-MKP. Simulation results...
In cognitive radio cellular networks (CogCell), the secondary users (SUs) can be admitted to the base station (BS) provided that the interferences to the primary users (PUs) are no higher than the pre-defined thresholds. In addition, different SUs may make different payments and require different quality of service (QoS). In this paper, we investigate the maximally achievable revenue obtained from...
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