认知协作NOMA网络的安全性能分析

doi:10.11959/j.issn.1000-436x.2020180

通信学报 ›› 2020, Vol. 41 ›› Issue (10): 139-147.doi: 10.11959/j.issn.1000-436x.2020180

认知协作NOMA网络的安全性能分析

杨震^1,²,朱梦瑶¹,冯友宏³

¹ 南京邮电大学通信与信息工程学院，江苏南京 210003
² 南京邮电大学通信与网络技术国家地方联合工程研究中心，江苏南京 210003
³ 安徽师范大学物理与电子信息学院，安徽芜湖 241199

修回日期:2020-08-04 出版日期:2020-10-25 发布日期:2020-11-05
作者简介:杨震（1961- ），男，江苏苏州人，博士，南京邮电大学教授、博士生导师，主要研究方向为语音处理与现代语音通信、无线通信中的通信与信号处理技术|朱梦瑶（1997- ），女，江苏泰兴人，南京邮电大学硕士生，主要研究方向为认知无线电和上行非正交多址接入技术|冯友宏（1979- ），男，安徽池州人，博士，安徽师范大学副教授，主要研究方向为超可靠低时延通信、无人机通信、网络安全
基金资助:
国家自然科学基金资助项目(61671252);安徽省自然科学基金资助项目(2008085MF181)

Secrecy performance analysis on cooperative CR-NOMA network

Zhen YANG^1,²,Mengyao ZHU¹,Youhong FENG³

¹ College of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,China
² National Local Joint Engineering Research Center for Communications and Network Technology,Nanjing University of Posts and Telecommunications,Nanjing 210003,China
³ School of Physical and Electronic Information,Anhui Normal University,Wuhu 241199,China

Revised:2020-08-04 Online:2020-10-25 Published:2020-11-05
Supported by:
The National Natural Science Foundation of China(61671252);The Natural Science Foundation of Anhui Province(2008085MF181)

摘要/Abstract

摘要：

为了提高通信系统的安全性能且使有限的频谱得到高效利用，将填充式认知无线电（OCR）与非正交多址接入（NOMA）技术相结合，提出了一个次网络通过感知主用户是否占用频谱来实现辅助主网络通信或次网络通信的动态切换的系统模型。主次网络均采用人工噪声（AN）技术进一步改善系统的安全传输性能。通过分别推导主、次网络安全中断概率和安全吞吐量的表达式来研究系统的安全中断性能。仿真结果表明了所提出的认知协作NOMA方案在降低中断概率、提高吞吐量方面的有益效果，并且进一步给出了人工噪声功率分配因子对系统性能的影响。

关键词: 填充式认知无线电, 非正交多址接入, 人工噪声, 安全中断性能

Abstract:

In order to improve the secrecy performance of communication system and make efficient use of limited spectrum,overlay cognitive radio (OCR) technology was combined with non-orthogonal multiple access (NOMA) technology and the communication model was proposed,in which secondary network realized dynamic switching between assisting primary network communication and secondary network communication by sensing whether the primary user occupied the spectrum or not.Artificial noise (AN) aided technology was used in primary and secondary networks respectively to further improve the secrecy performance of the system.The secrecy performance of the system was studied by deducing the expressions of the primary and secondary network secrecy outage probability and secrecy throughput respectively.The simulation results show that the proposed cognitive cooperative NOMA communication scheme is beneficial in reducing secrecy outage probability and increasing secrecy throughput.Furthermore,the influence of AN power allocation factor on system performance is given.

Key words: overlay cognitive radio, non-orthogonal multiple access, artificial noise, secrecy outage performance

中图分类号:

TP393

杨震,朱梦瑶,冯友宏. 认知协作NOMA网络的安全性能分析[J]. 通信学报, 2020, 41(10): 139-147.

Zhen YANG,Mengyao ZHU,Youhong FENG. Secrecy performance analysis on cooperative CR-NOMA network[J]. Journal on Communications, 2020, 41(10): 139-147.

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认知协作NOMA网络的安全性能分析

Secrecy performance analysis on cooperative CR-NOMA network

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