支持多个多播组业务的多中继协作NOMA系统中断性能研究

doi:10.11959/j.issn.1000-0801.2023135

电信科学 ›› 2023, Vol. 39 ›› Issue (7): 35-45.doi: 10.11959/j.issn.1000-0801.2023135

支持多个多播组业务的多中继协作NOMA系统中断性能研究

褚翼飞 1，杨新杰 1,2,3

1. 宁波大学信息科学与工程学院，浙江宁波 315211；
2. 网络与交换技术全国重点实验室(北京邮电大学)，北京 100876；
3. 宁波艾欧迪互联科技有限公司，浙江宁波 315021

修回日期:2023-06-12 出版日期:2023-07-20 发布日期:2023-07-01
作者简介:褚翼飞（1996- ），男，宁波大学信息科学与工程学院硕士生，主要研究方向为海洋岸基通信系统、非正交多址接入（NOMA）技术
杨新杰（1971- ），男，宁波大学信息科学与工程学院教授、硕士生导师，主要研究方向为下一代移动通信系统架构、移动物联网接入技术、协作中继网络性能等
基金资助:
国家重点实验室开放基金资助项目(SKLNST-2021-1-12);宁波市自然科学基金资助项目(2019A610073)

Outage performance of multi-relay collaborative NOMA systems supporting multiple multicast services

Yifei CHU, Xinjie YANG

Faculty of Electrical Engineering and Computer Science, Ningbo University, Ningbo 315211, China

Revised:2023-06-12 Online:2023-07-20 Published:2023-07-01
Supported by:
The Chinese National Key Laboratory Open Foundation Project(SKLNST-2021-1-12);The Ningbo City Natural Science Foundation Project(2019A610073)

摘要/Abstract

摘要：

提出在协作非正交多址接入（non-orthogonal multiple access，NOMA）系统中使用多中继方案支持主用户和多个多播组业务。考虑在瑞利信道下，从每个多播组中选出信道条件最好的次级用户作为中继节点协助解码转发目标单播主用户的信号，在主用户处使用最大比合并（maximum ratio combining，MRC）技术以提升信干噪比（signal to interference and noise ratio，SINR）。分别对全双工和半双工模式下应用多中继同时转发（multi-relay simultaneous forwarding，MRSF）和最优中继转发（optimal relay forwarding，ORF）两种策略的主用户中断概率进行理论分析并通过蒙特卡洛仿真验证。结果显示，全双工对半双工中继具有性能优势，并发现对相同个数多播组，MRSF策略相比ORF策略可有效提升单播主用户的中断性能且随多播组个数增加变得更显著。

关键词: 非正交多址接入, 多播业务, 全双工多中继, 中断概率

Abstract:

A cooperative non-orthogonal multiple access (NOMA) system was proposed to support unicast primary user and multiple multicast services based on multiple relays strategy.Under the Rayleigh channel, the secondary user with the best channel condition from each multicast group was selected as full-duplex relay to decode and forward the unicast primary user’s signal, and the primary user employed the maximum ratio combining (MRC) technique to improve the signal to interference and noise ratio (SINR).The closed-form expressions for the outage probability of primary user in full-duplex and half-duplex modes with multi-relay simultaneous forwarding (MRSF) and optimal relay forwarding (ORF) were derived and verified by Monte Carlo simulations.The results verify that full-duplex relay outperforms half-duplex relay scheme.Furthermore, with same number of multicast groups, the MRSF strategy effectively improve the unicast primary user outage performance, in comparison with ORF strategy, when the number of multicast groups increases, the improvement becomes more significant.

Key words: non-orthogonal multiple access, multicast service, full-duplex multi-relay, outage probability

中图分类号:

TN925

褚翼飞 , 杨新杰 , . 支持多个多播组业务的多中继协作NOMA系统中断性能研究[J]. 电信科学, 2023, 39(7): 35-45.

Yifei CHU, Xinjie YANG. Outage performance of multi-relay collaborative NOMA systems supporting multiple multicast services[J]. Telecommunications Science, 2023, 39(7): 35-45.

图/表 5

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支持多个多播组业务的多中继协作NOMA系统中断性能研究

Outage performance of multi-relay collaborative NOMA systems supporting multiple multicast services

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