Technology of Network & Communication
|
269-272

Power allocation scheme considering user QoS in downlink NOMA system

Chen Fatang
Deng Qing
Shi Beibei
School of Communication & Information Engineering, Chongqing University of Posts & Telecommunications, Chongqing 400065, China

Abstract

In order to improve the system throughput and spectrum efficiency of the future network, the power allocation of non-orthogonal multiple access(NOMA) technology has become the research focus in the field of mobile communication in recent years. Under the premise of ensuring the quality of service of users, this paper studied the power allocation problem of the downlink NOMA system. It used the iterative water injection algorithm between sub-bands to distribute the power of each sub-band in a small range. Considering the quality of service of users in the sub-band, it obtained the optimal power allocation factor by using KKT condition, so as to maximize the total throughput of the system. The simulation results show that the total throughput and spectrum efficiency of the proposed power allocation scheme are better than that of the traditional power allocation scheme, and the total throughput of the system is improved by more than 40% compared with the OMA.

Foundation Support

国家自然科学基金资助项目(61701063)

Publish Information

DOI: 10.19734/j.issn.1001-3695.2019.10.0630
Publish at: Application Research of Computers Printed Article, Vol. 38, 2021 No. 1
Section: Technology of Network & Communication
Pages: 269-272
Serial Number: 1001-3695(2021)01-054-0269-04

Publish History

[2021-01-05] Printed Article

Cite This Article

陈发堂, 邓青, 石贝贝. 下行NOMA系统中一种考虑用户QoS的功率分配方案 [J]. 计算机应用研究, 2021, 38 (1): 269-272. (Chen Fatang, Deng Qing, Shi Beibei. Power allocation scheme considering user QoS in downlink NOMA system [J]. Application Research of Computers, 2021, 38 (1): 269-272. )

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  • Application Research of Computers Monthly Journal
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Application Research of Computers, founded in 1984, is an academic journal of computing technology sponsored by Sichuan Institute of Computer Sciences under the Science and Technology Department of Sichuan Province.

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