UAV-Aided Multi-Way NOMA Networks With Residual Hardware Impairments

被引：82
作者：
Li, Xingwang [1 ]
Wang, Qunshu [1 ]
Liu, Yuanwei [2 ]
Tsiftsis, Theodoros A. [3 ]
Ding, Zhiguo [4 ]
Nallanathan, Arumugam [2 ]
机构：
[1] Henan Polytech Univ, Sch Phys & Elect Informat Engn, Jiaozuo 454000, Henan, Peoples R China
[2] Queen Mary Univ London, Sch Elect Engn & Comp Sci, London E14FS, England
[3] Jinan Univ, Sch Intelligent Syst Sci & Engn, Zhuhai Campus, Zhuhai 519070, Peoples R China
[4] Univ Manchester, Sch Elect & Elect Engn, Manchester M13 9PL, Lancs, England
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2020年 / 9卷 / 09期
关键词：
Hardware impairments; multi-way relay; NOMA; UAV; PERFORMANCE ANALYSIS;
D O I：
10.1109/LWC.2020.2996782
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In this letter, we study an unmanned aerial vehicle (UAV)-aided non-orthogonal multiple access (NOMA) multi-way relaying networks (MWRNs). Multiple terrestrial users aim to exchange their mutual information via an amplify-and-forward (AF) UAV relay. Specifically, the realistic assumption of the residual hardware impairments (RHIs) at the transceivers is taken into account. To evaluate the performance of the considered networks, we derive the analytical expressions for the achievable sum-rate (ASR). In addition, we carry out the asymptotic analysis by invoking the affine expansion of the ASR in terms of high signal-to-noise ratio (SNR) slope and high SNR power offset. Numerical results show that: 1) Compared with orthogonal multiple access (OMA), the proposed networks can significantly improve the ASR since it can reduce the time slots from [(M - 1)/2] +1 to 2; and 2) RHIs of both transmitter and receiver have the same effects on the ASR of the considered networks.
引用
收藏
页码：1538 / 1542
页数：5
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