User Fairness in Wireless Powered Communication Networks With Non-Orthogonal Multiple Access

被引：10
|
作者：
de Carvalho, Jair A. [1 ]
da Costa, Daniel B. [1 ]
Yang, L. [2 ]
Alexandropoulos, George C. [3 ]
Oliveira, R. [4 ,5 ]
Dias, Ugo S. [6 ]
机构：
[1] Univ Fed Ceara, Dept Comp Engn, Area Telecommun, BR-62010560 Sobral, Brazil
[2] Hunan Univ, Coll Comp Sci & Elect Engn, Changsha 410082, Peoples R China
[3] Natl & Kapodistrian Univ Athens, Dept Informat & Telecommun, Athens 15784, Greece
[4] Inst Telecomunicacoes, P-1049001 Lisbon, Portugal
[5] Univ Nova Lisboa, Dept Engn Eletrotecn & Comp, Fac Ciencias & Tecnol, P-2829516 Costa Da Caparica, Portugal
[6] Univ Brasilia, Dept Elect Engn, BR-70910900 Brasilia, DF, Brazil
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2021年 / 10卷 / 01期
关键词：
NOMA; WPCNs; user fairness; optimization;
D O I：
10.1109/LWC.2020.3030818
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This letter investigates user fairness in wireless powered communication networks (WPCNs) with non-orthogonal multiple access (NOMA) with the aim of maximizing the equal individual data rates. Initially, it is proposed the bisection method to obtain the optimal power allocation coefficients. Then, Lagrange dual-decomposition is considered for evaluating the optimal time-splitting ratio. Next, Newton's method combined with the sub-gradient method are employed to achieve the optimal solution. In addition, two sub-optimal solutions that provide a good balance between performance and complexity are proposed. Lastly, simulation results are presented to evaluate the performance of the proposed solutions.
引用
收藏
页码：189 / 193
页数：5
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