南京邮电大学学报（自然科学版）2025，Vol.45Issue(2)：30-38,9.DOI:10.14132/j.cnki.1673-5439.2025.02.004
RIS辅助的全双工中继协作NOMA系统性能分析
Performance analysis of RIS-assisted cooperative NOMA systems with full-duplex relaying
摘要
Abstract
Reconfigurable intelligent surface(RIS)is an emerging technology that can enhance the per-formance and coverage of wireless communication networks.This paper investigates a downlink RIS-assisted cooperative non-orthogonal multiple access(NOMA)scheme with full-duplex relaying,where the BS transmits signals to the far user with the help of both RIS and user-relaying.To evaluate the reli-ability of this scheme,we derive the closed-form expressions of the outage probability.Further,we ob-tain the users'diversity orders according to the asymptotic approximation at a high signal-to-noise-ratio.Simulation results demonstrate the correctness of the analysis and reveal certain observations:as the number of RIS reflecting elements increases,the outage probability of the near user decreases signifi-cantly,while the outage probability of the far user first decreases and then remains constant.关键词
可重构智能超表面/全双工中继/非正交多址接入/中断概率/分集增益Key words
reconfigurable intelligent surface(RIS)/full-duplex relaying/non-orthogonal multiple access(NOMA)/outage probability/diversity order分类
电子信息工程引用本文复制引用
董国青,杨震,冯友宏,吕斌..RIS辅助的全双工中继协作NOMA系统性能分析[J].南京邮电大学学报（自然科学版）,2025,45(2):30-38,9.基金项目
国家自然科学基金(62071242,62071005)、江苏省研究生科研与实践创新项目(KYCX20_0737)和安徽省智能机器人信息融合与控制工程研究中心开放课题(IFCIR2024008)资助项目 （62071242,62071005）
