摘要
This paper investigates the power allocation problem in non-orthogonal multiple access(NOMA)integrated unmanned aerial vehicle(UAV)communication systems.In particular,we propose a novel resource allocation scheme to increase the transmission rate of the users that have relatively worse channel state information,while reducing the sum rate loss.To solve this problem efficiently,we decouple the optimization problem into three subproblems.First,we solve the problem of user pairing and subchannel allocation.Second,the optimum power proportional factor is derived to allocate transmit power among different users on the same subchannel.At last,different subchannels are allocated with appropriate power to improve the performance of the subchannels.Simulation results show that the proposed scheme can enjoy a better performance than the benchmark methods since it can achieve a proper trade-off between the system sum rate and the proportional fairness.
基金
This work was supported in part by the Key-Area Research and Development Program of Guangdong Province Project under Grant 2019B010153003
the open research fund of Key Laboratory of Wireless Sensor Network&Communication under Grant 2017003
Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,and the Open Research Fund from Shenzhen Research Institute of Big Data under Grant 2019ORF01006.
