基于MF协议的协作NOMA系统物理层安全性能研究

张延良; 田月华; 李兴旺; 黄高见

doi:10.11999/JEIT220246

基于MF协议的协作NOMA系统物理层安全性能研究

doi: 10.11999/JEIT220246

河南理工大学物理与电子信息学院焦作 454003

基金项目: 河南省科技攻关项目(212102210504, 212102210557)，国家自然科学基金青年基金(62001320)

详细信息

作者简介:
张延良：男，教授，研究方向为新一代无线通信技术、智能信息处理

田月华：女，硕士生，研究方向为新一代无线通信技术

李兴旺：男，副教授，研究方向为新一代宽带移动通信系统的新理论及技术

黄高见：男，讲师，研究方向为雷达通信一体化技术、无线通信物理层安全技术、新兴通信调制技术和阵列信号处理等

通讯作者:
李兴旺　lixingwang@hpu.edu.cn

中图分类号: TN925
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出版历程
- 收稿日期: 2022-03-09
- 修回日期: 2022-04-29
- 网络出版日期: 2022-06-28
- 刊出日期: 2023-04-10

Research on Physical Layer Security of Cooperative NOMA System Based on MF Protocol

School of Physics and Electronic Information, Henan Polytechnic University, Jiaozuo 454003, China

Funds: The Science and Technology Project of Henan Province (212102210504, 212102210557), The Youth Fundation of the National Natural Science Foundation of China (62001320)

摘要

摘要: 针对协作非正交多址(NOMA)系统中信息安全传输问题，该文提出一种基于修改转发(MF)中继的物理层安全(PLS)传输方案。该方案利用MF中继将解码信息修改后再转发，避免了合法信息泄露到窃听节点。首先对NOMA-MF系统进行建模，然后推导了系统安全中断概率(SOP)、严格正保密容量(SPSC)和窃听概率(IP)来衡量系统的保密性和安全性，以及中断概率(OP)以衡量其可靠性。此外，推导了系统的渐近性能，对比分析了解码转发(DF)协议下NOMA-DF系统与NOMA-MF系统的性能。推导及仿真结果表明：NOMA-MF系统的保密性能和安全性能比NOMA-DF系统更具有优势；NOMA-MF系统的OP和IP之间存在最优信噪比(SNR)以实现系统安全及可靠性的平衡；存在最佳功率分配参数以实现最低的SOP和OP。
- 协作通信 /
- 物理层安全 /
- 非正交多址接入 /
- 修改转发
Abstract: For evaluating the problem of information security transmission in cooperative Non-Orthogonal Multiple Access (NOMA) system, a Physical Layer Secure (PLS) transmission scheme based on Modify-and-Forward (MF) relay is proposed. The scheme uses MF relay to modify the decoded information and then forward it, to avoid disclosing the legitimate information to the eavesdropping node. Firstly, the NOMA-MF system is modeled, and then Secrecy Outage Probability (SOP), Strictly Positive Security Capacity (SPSC) and Intercept Probability (IP) are deduced to measure the confidentiality and security of the system and Outage Probability (OP) to measure its reliability. In addition, the asymptotic performance of the system is derived, and the performance of NOMA-DF system and NOMA-MF system under Decode-and-Forward (DF) protocol is compared. The derivation and the simulation results show that: The confidentiality and security performance of NOMA-MF system has more advantages than that of NOMA-DF system; There is an optimal Signal-to-Noise Ratio (SNR) between OP and IP of NOMA-MF system to achieve the balance of system safety and reliability; There is an optimal power allocation parameter to achieve the lowest SOP and OP.
- Cooperative communication /
- Physical Layer Security (PLS) /
- Non-Orthogonal Multiple Access (NOMA) /
- Modify-and-Forward (MF)

HTML全文

图 1 基于MF/DF中继协议的协作NOMA系统模型

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图 2 NOMA/OMA方案MF/DF协议的系统SOP对比

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图 3 NOMA/OMA方案MF/DF协议的系统SPSC对比

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图 4 NOMA系统MF/DF的OP/IP与信噪比的关系

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图 5 不同发射SNR下的OP/SOP与功率分配参数$ {a_1} $的关系

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