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Relay-assisted access technique has been proposed as a promising solution to improve the energy efficiency and service quality of edge users for cellular networks. In this paper, we aim to find the optimal scheduling period, optimal power allocation, and optimal user scheduling and relay selection that minimizes the total power consumption under the constraints of minimum data rate requirements for...
In this paper, an adaptive spectrum leasing scheme is proposed for multiuser cognitive radio networks and multiuser diversity is analyzed. Based on two-path successive relay and decode-and-forward relay protocols, each cognitive user intelligently switches the spectrum leasing protocols to help the primary data transmission. As a reward, the spectrum is then leased to the cognitive user for secondary...
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