Energy Efficiency Maximization in NOMA Enabled Backscatter Communications With QoS Guarantee

被引：86

作者：

Xu, Yongjun ^{[1
,2
,3
]}

Qin, Zhijin ^{[4
]}

Gui, Guan ^{[5
]}

Gacanin, Haris ^{[6
]}

Sari, Hikmet ^{[5
]}

Adachi, Fumiyuki ^{[7
]}

机构：

[1] Chongqing Univ Posts & Telecommun, Sch Commun & Informat Engn, Chongqing 400065, Peoples R China

[2] Chongqing Univ Posts & Telecommun, CQUPT BUL Innovat Inst, Chongqing 400065, Peoples R China

[3] Xian Univ Posts & Telecommun, Shaanxi Key Lab Informat Commun Network & Secur, Xian 710121, Peoples R China

[4] Queen Mary Univ London, Sch Elect Engn & Comp Sci, London E1 4NS, England

[5] Nanjing Univ Posts & Telecommun, Coll Telecommun & Informat Engn, Nanjing 210003, Peoples R China

[6] Rhein Westfal TH Aachen, Fac Elect Engn & Informat Technol, D-52062 Aachen, Germany

[7] Tohoku Univ, Res Org Elect Commun, Sendai, Miyagi 9808577, Japan

来源：

IEEE WIRELESS COMMUNICATIONS LETTERS | 2021年 / 10卷 / 02期

基金：

中国国家自然科学基金;

关键词：

NOMA; Backscatter; Quality of service; Resource management; Signal to noise ratio; Interference; Telecommunications; Backscatter communications; energy efficiency; non-orthogonal multiple access; NONORTHOGONAL MULTIPLE-ACCESS; RESOURCE-ALLOCATION;

D O I：

10.1109/LWC.2020.3031042

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Energy efficiency (EE) is an important performance metric in communication systems. However, to the best of our knowledge, the energy-efficient resource allocation (RA) problem in non-orthogonal multiple access enabled backscatter communication networks (NOMA-BackComNet) comprehensively considering the user's quality of service (QoS) has not been investigated. In this letter, we present the first attempt to solve the EE-based RA problem for NOMA-BackComNet with QoS guarantee. The objective is to maximize the EE of users subject to the QoS requirements of users, the decoding order of successive interference cancellation and the reflection coefficient (RC) constraint, where the transmit power of the base station and the RC of the backscatter device are jointly optimized. To solve this non-convex problem, we develop a novel iteration algorithm by using Dinkelbach's method and the quadratic transformation approach. Simulation results verify the effectiveness of the proposed scheme in improving the EE by comparing it with the other schemes.

引用

页码：353 / 357

页数：5

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