Downlink Multi-Carrier NOMA With Opportunistic Bandwidth Allocations

被引：16
作者：
Al-Obiedollah, Haitham [1 ]
Cumanan, Kanapathippillai [2 ]
Salameh, Haythem Bany [3 ,4 ]
Chen, Gaojie [5 ]
Ding, Zhiguo [6 ]
Dobre, Octavia A. [7 ]
机构：
[1] Hashemite Univ, Elect Engn Dept, Zarqa 13135, Jordan
[2] Univ York, Dept Elect Engn, York YO10 5DD, N Yorkshire, England
[3] Al Ain Univ, Dept Commun & Networking, Al Ain, U Arab Emirates
[4] Yarmouk Univ, Dept Telecommun Engn, Irbid 21163, Jordan
[5] Univ Leicester, Sch Engn, Leicester LE1 7RH, Leics, England
[6] Univ Manchester, Sch Elect & Elect Engn, Manchester M13 9PL, Lancs, England
[7] Mem Univ, Dept Elect & Comp Engn, St John, NF A1B 3X5, Canada
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2021年 / 10卷 / 11期
关键词：
NOMA; Resource management; Interference; Bandwidth; Signal to noise ratio; Channel allocation; Silicon carbide; Non-orthogonal multiple access (NOMA); multi-carrier NOMA; EFFICIENT RESOURCE-ALLOCATION; POWER ALLOCATION; BEAMFORMING DESIGN; TRANSMISSION;
D O I：
10.1109/LWC.2021.3102189
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Multi-carrier non-orthogonal multiple access (MC-NOMA) system has been considered as a promising candidate in future wireless networks. In a MC-NOMA system, the available bandwidth of transmission is divided into several sub-bands, such that multiple users in each sub-band are served based on power-domain NOMA. Unlike the equal sub-band allocations, we propose a sum-rate maximization technique that jointly allocates the available power and bandwidth with opportunistic sharing between the sub-bands. A second-order cone program approach is exploited to deal with the non-convexity issues of the corresponding optimization problem. Simulation results reveal that the MC-NOMA system with opportunistic bandwidth allocation outperforms the scheme with the equal bandwidth allocation in terms of achieved sum-rate.
引用
收藏
页码：2426 / 2429
页数：4
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