无人机辅助的NOMA网络用户分组与功率分配算法

doi:10.11959/j.issn.1000-436x.2020194

Abstract

Abstract:

To improve the transmission flexibility of emergency communication scenarios,a joint user grouping and power allocation algorithm was proposed for UAV-aided non-orthogonal multiple access (NOMA) system.A sum-rate maximization resource allocation algorithm was formulated under the constraints of the maximum transmit power and the user grouping.To solve the non-convex problem,a graph-based user grouping algorithm was proposed to minimize the relative distance between the UAV and users.Based on the grouping result,the power allocation sub-problem was transformed into a convex one by using the auxiliary-variable approach.Simulation results demonstrate that the proposed algorithm has better performance in terms of sum rates.

Key words: UAV, NOMA, user grouping, power allocation

CLC Number:

TN929.5

Guoquan LI,Jinzhao LIN,Yongjun XU,Zhengwen HUANG,Ting LIU. User grouping and power allocation algorithm for UAV-aided NOMA network[J]. Journal on Communications, 2020, 41(9): 21-28.

Figures/Tables 8

References 29

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