Cyclical NOMA Based UAV-Enabled Wireless Network

被引:37
作者
Sun, Jinjing [1 ]
Wang, Zulin [1 ,2 ]
Huang, Qin [1 ]
机构
[1] Beihang Univ, Sch Elect & Informat Engn, Beijing 100191, Peoples R China
[2] Collaborat Innovat Ctr Geospatial Technol, Wuhan 430079, Hubei, Peoples R China
基金
中国国家自然科学基金;
关键词
Cyclical NOMA; minimum throughput optimization; multiuser communication scheduling; UAV-enabled wireless network; UAV trajectory; UNMANNED AERIAL VEHICLES; NONORTHOGONAL MULTIPLE-ACCESS; OPTIMIZATION; PERFORMANCE; SYSTEM;
D O I
10.1109/ACCESS.2018.2888855
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 order to achieve high spectral efficiency and low access delay, this paper introduces cyclical non-orthogonal multiple access (NOMA) into unmanned aerial vehicle (UAV)-enabled wireless network. It allows the UAV to communicate with multiple ground users in the same time-frequency resources, cyclically. The minimum throughput over all ground users is maximized by jointly optimizing multiuser communication scheduling with cyclical NOMA and UAV trajectory. It turns out that the maximization of minimum throughput is a mixed integer non-linear non-convex optimization problem. In this paper, this problem is decoupled into two blocks, i.e., the optimization of multiuser communication scheduling with cyclical NOMA and the optimization of UAV trajectory. Then, a joint optimization algorithm is proposed based on the block coordinate descent method. The simulation results demonstrate that the proposed joint optimization method can double the minimum throughput, compared with cyclical TDMA. In addition, it reduces users' average access delay and UAV's flying range under the same minimum throughput.
引用
收藏
页码:4248 / 4259
页数:12
相关论文
共 31 条
[1]   Optimal LAP Altitude for Maximum Coverage [J].
Al-Hourani, Akram ;
Kandeepan, Sithamparanathan ;
Lardner, Simon .
IEEE WIRELESS COMMUNICATIONS LETTERS, 2014, 3 (06) :569-572
[2]  
[Anonymous], 2006, IEEE Trans Automat Contr, DOI [DOI 10.1109/TAC.2006.884922, 10.1109/tac.2006.884922]
[3]  
[Anonymous], 2009, IEEE T INF THEORY
[4]  
[Anonymous], SIGNAL PROCESSING 5G
[5]  
[Anonymous], 2016, CVX MATLAB SOFTWARE
[6]  
Boyd Stephen P., 2014, Convex Optimization
[7]   An Optimization Perspective of the Superiority of NOMA Compared to Conventional OMA [J].
Chen, Zhiyong ;
Ding, Zhiguo ;
Dai, Xuchu ;
Zhang, Rui .
IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2017, 65 (19) :5191-5202
[8]  
Dai LL, 2015, IEEE COMMUN MAG, V53, P74, DOI 10.1109/MCOM.2015.7263349
[9]   Wireless-Powered Communications With Non-Orthogonal Multiple Access [J].
Diamantoulakis, Panagiotis D. ;
Pappi, Koralia N. ;
Ding, Zhiguo ;
Karagiannidis, George K. .
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 2016, 15 (12) :8422-8436
[10]   Application of Non-Orthogonal Multiple Access in LTE and 5G Networks [J].
Ding, Zhiguo ;
Liu, Yuanwei ;
Choi, Jinho ;
Sun, Qi ;
Elkashlan, Maged ;
I, Chih-Lin ;
Poor, H. Vincent .
IEEE COMMUNICATIONS MAGAZINE, 2017, 55 (02) :185-191