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QoS-based optimal and fair resource allocation for energy-efficiency uplink NOMA networks

Author:
Guo Yanyan  Li Shuai  Wu Chao    


Journal:
The Journal of China Universities of Posts and Telecommunications


Issue Date:
2020


Abstract(summary):

The energy-efficiency(EE) optimization problem was studied for resource allocation in an uplink single-cell network, in which multiple mobile users with different quality of service(QoS) requirements operate under a non-orthogonal multiple access(NOMA) scheme. Firstly, a multi-user feasible power allocation region is derived as a multidimensional body that provides an efficient scheme to determine the feasibility of original channel and power assignment problem. Then, the size of feasible power allocation region was first introduced as utility function of the subchannel-user matching game in order to get high EE of the system and fairness among the users. Moreover, the power allocation optimization to the EE maximization is proved to be a monotonous decline function. The simulation results show that compared with the conventional schemes, the network connectivity of the proposed scheme is significantly enhanced and besides, for low rate massive connectivity networks, the proposed scheme obtains performance gains in the EE of the system.


Page:
87-96


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