新型机会式NOMA协作多播方案

doi:10.11959/j.issn.1000-436x.2020239

通信学报 ›› 2020, Vol. 41 ›› Issue (11): 141-150.doi: 10.11959/j.issn.1000-436x.2020239

新型机会式NOMA协作多播方案

陆音^1,^2,³,陈继荣²,卞皓伟²,朱洪波^2,³

¹ 南京邮电大学物联网学院，江苏南京 210003
² 南京邮电大学江苏省无线通信重点实验室，江苏南京 210003
³ 南京邮电大学教育部泛在网络健康服务系统工程研究中心，江苏南京 210003

修回日期:2020-10-27 出版日期:2020-11-25 发布日期:2020-12-19
作者简介:陆音（1970- ），男，北京人，博士，南京邮电大学副研究员、硕士生导师，主要研究方向为无线通信、物联网技术与应用等|陈继荣（1996- ），男，江苏南通人，南京邮电大学硕士生，主要研究方向为无线通信|卞皓伟（1998- ），男，江苏南京人，南京邮电大学硕士生，主要研究方向为无线通信|朱洪波（1956- ），男，江苏扬州人，博士，南京邮电大学教授、博士生导师、博士后合作导师，主要研究方向为无线通信、物联网与下一代网络技术等
基金资助:
国家自然科学基金资助项目(61271236);国家自然科学基金资助项目(61871446);江苏省高等学校自然科学研究重大项目(17KJA510004)

Novel opportunistic cooperative multicast scheme for NOMA

Yin LU^1,^2,³,Jirong CHEN²,Haowei BIAN²,Hongbo ZHU^2,³

¹ School of Internet of Things,Nanjing University of Posts and Telecommunications,Nanjing 210003,China
² Jiangsu Key Laboratory of Wireless Communications,Nanjing University of Posts and Telecommunications,Nanjing 210003,China
³ Ministry of Education Ubiquitous Network Health Service System Engineering Research Center,Nanjing University of Posts and Telecommunications,Nanjing 210003,China

Revised:2020-10-27 Online:2020-11-25 Published:2020-12-19
Supported by:
The National Natural Science Foundation of China(61271236);The National Natural Science Foundation of China(61871446);The Major Project of Natural Science Foundation of the Jiangsu Higher Education Institutions of China(17KJA510004)

摘要/Abstract

摘要：

将认知无线电技术应用于非正交多址接入（NOMA）协作多播系统，研究了将用户作为中继的可行性，提出了一种带参数的多播候选集的二级协作传输方案。该方案先由基数q选出候选集，再根据主用户和候选次用户之间的信道增益选出最佳的转发节点。仿真结果表明，通过合理选择构造参数 q，所提方案在减少次用户分集增益损失的同时，能够大幅提高主用户的分集增益。在N个多播用户组成的NOMA协作多播场景中，将主用户的分集增益从2提升到min(N-q+2,q+1)，满足主用户可靠性的要求。

关键词: 非正交多址接入, 协作多播, 中继选择, 认知无线电

Abstract:

The cognitive radio technology was applied to non-orthogonal multiple access (NOMA) cooperative multicast system,the feasibility of using users as relays was studied,and a two-level cooperative transmission scheme with parameterized multicast candidate sets was proposed.Specifically,the scheme first selected the candidate set according to the cardinality q,and then selected the best forwarding node based on the channel gain between the primary users and the candidate secondary users.Simulation results show that,through the reasonable selection of the cardinality q,the proposed scheme can greatly reduce the diversity gain of the secondary users while simultaneously increasing the diversity gain of the primary users.In NOMA cooperative multicast scenario composed of N multicast users,the proposed scheme can increase the diversity gain of the primary users from 2 to min(N-q+2,q+1) to meet their reliability requirements.

Key words: non-orthogonal multiple access, cooperative multicast, relay selection, cognitive radio

中图分类号:

TN929.5

陆音,陈继荣,卞皓伟,朱洪波. 新型机会式NOMA协作多播方案[J]. 通信学报, 2020, 41(11): 141-150.

Yin LU,Jirong CHEN,Haowei BIAN,Hongbo ZHU. Novel opportunistic cooperative multicast scheme for NOMA[J]. Journal on Communications, 2020, 41(11): 141-150.

图/表 6

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新型机会式NOMA协作多播方案

Novel opportunistic cooperative multicast scheme for NOMA

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