NOMA系统的被动中继选择策略

doi:10.19665/j.issn1001-2400.2021.03.007

西安电子科技大学学报 ›› 2021, Vol. 48 ›› Issue (3): 56-62.doi: 10.19665/j.issn1001-2400.2021.03.007

• 信息与通信工程&机械工程 • 上一篇下一篇

NOMA系统的被动中继选择策略

宋传旺¹(),刘栋¹(),李恩玉¹(),赵瑞收¹(),郝思媛¹(),申天琪²()

1.青岛理工大学信息与控制工程学院,山东青岛 266520
2.青岛高新区经济发展部,山东青岛 266109

收稿日期:2019-11-11 出版日期:2021-06-20 发布日期:2021-07-05
作者简介:宋传旺(1974—),男,副教授,博士,E-mail:songchw_2006@163.com|刘栋(1993—),男,青岛理工大学硕士研究生,E-mail:1143861391@qq.com|李恩玉(1981—),男,副教授,博士,E-mail:lienyu0123@163.com|赵瑞收(1992—),男,青岛理工大学硕士研究生,E-mail:1021001361@qq.com|郝思媛(1987—),女,副教授,博士,E-mail:lemonbananan@163.com|申天琪(1985—),男,工程师,E-mail:27tianqi@163.com
基金资助:
山东省自然科学基金(ZR2018MF002);国家自然科学基金青年项目(61701272)

Reactive relay selection strategy for NOMA systems

SONG Chuanwang¹(),LIU Dong¹(),LI Enyu¹(),ZHAO Ruishou¹(),HAO Siyuan¹(),SHEN Tianqi²()

1. School of Information and Control Engineering,Qingdao University of Technology,Qingdao 266520,China
2. Qingdao Economic Development Department of High-tech District,Qingdao 266109,China

Received:2019-11-11 Online:2021-06-20 Published:2021-07-05

摘要/Abstract

摘要：

非正交多址接入技术能够实现更高的频谱利用率、更大的吞吐量和更低的传输延迟,因此被认为是5G网络中多址接入的重要技术之一。为提高非正交协作系统的中断性能,针对非正交多址接入系统的下行链路场景,设计了基于解码转发协议的分布式被动中继选择方案,推导了系统中两用户各自中断概率的闭式结果和高信噪比下的近似结果,最后通过仿真分析得出了中继位置、信道质量和中继个数对系统中断概率的影响规律,并与部分中继选择策略作对比,验证了所提被动中继选择策略的性能优势。

关键词: 非正交多址接入, 解码转发, 中断概率, 被动中继选择, 协作通信

Abstract:

Non-Orthogonal Multiple Access is considered to be a promising candidate for 5G multiple access schemes due to its superior spectral efficiency,higher throughput,and lower transmission delay.To improve the outage performance of non-orthogonal cooperative systems,non-orthogonal multiple access system is studied in the downlink scenario.First,a distributed reactive relay selection scheme based on the decode-and-forward protocol is designed.Then,the closed-form results of the exact outage performance and the approximate results in a high signal-to-noise ratio of the two users are derived.Finally,the effects of the relay position,channel quality and relay number on the outage probability of the system are analyzed by simulation.At the same time,compared with the partial relay selection strategy,the performance advantage of the proposed reactive relay selection strategy is verified.

Key words: non-orthogonal multiple access, decode-and-forward, outage probability, reactive relay selection, cooperative communications

中图分类号:

TN929.53

宋传旺,刘栋,李恩玉,赵瑞收,郝思媛,申天琪. NOMA系统的被动中继选择策略[J]. 西安电子科技大学学报, 2021, 48(3): 56-62.

SONG Chuanwang,LIU Dong,LI Enyu,ZHAO Ruishou,HAO Siyuan,SHEN Tianqi. Reactive relay selection strategy for NOMA systems[J]. Journal of Xidian University, 2021, 48(3): 56-62.

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NOMA系统的被动中继选择策略

Reactive relay selection strategy for NOMA systems

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