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This paper considers a downlink nonorthogonal multiple access (NOMA) system where the source intends to transmit independent information to the users at target data rates under statistical channel state information. The outage balancing problem is studied with the issues of power allocation, decoding order selection, and user grouping being taken into account. Specifically, with regard to the max–min...
Cognitive Radio is an effective solution to the current shortage of spectrum resources. One of the key technologies is open spectrum allocation. In this paper, an improved spectrum allocation algorithm based on proportional fairness is proposed. An adjusting factor of channel quantity is introduced based on traditional labeling system, which has effective inhibitory functions for nodes who occupy...
In this paper, in order to decrease the interference between secondary users and primary users, a power control model based on the cooperative game theory has been investigated in the cognitive radio network. According to Nash theorem, a new utility function based on a fairness function is designed, and a new distributed power control algorithm based on Nash Bargaining Solution (NBS) is also put forward...
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