全双工主动窃听非正交多址接入系统智能超表面辅助物理层安全传输技术

阔永红; 曹琳; 吕璐; 贺冰涛; 陈健

doi:10.11999/JEIT230296

全双工主动窃听非正交多址接入系统智能超表面辅助物理层安全传输技术

doi: 10.11999/JEIT230296

西安电子科技大学通信工程学院西安 710071

基金项目: 国家自然科学基金(62271368, 61971320, 62201421)，中国博士后科学基金(BX20190264, 2019M650258)，陕西省重点研发计划(2023-YBGY-041)，陕西省自然科学基础研究计划(2021JQ-206)，广东省基础与应用基础研究基金(2020A1515110084)

详细信息

作者简介:
阔永红：女，教授，研究方向为无线通信与信号处理

曹琳：女，硕士生，研究方向为非正交多址接入、智能反射面

吕璐：男，副教授，研究方向为物理层安全、隐蔽通信等

贺冰涛：男，讲师，研究方向为非正交多址接入、协作通信等

陈健：男，教授，研究方向为无线网络虚拟化、非正交多址接入

通讯作者:
贺冰涛　bthe@xidian.edu.cn

中图分类号: TN92
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- 文章访问数: 225
- HTML全文浏览量: 35
- PDF下载量: 69
- 被引次数: 0
出版历程
- 收稿日期: 2023-04-18
- 修回日期: 2024-01-18
- 网络出版日期: 2024-01-28
- 刊出日期: 2024-03-27

Reconfigurable Intelligent Surfaces-aided Physical Layer Secure Transmission in Non-Orthogonal Multi-Access Systems Against Full-duplex Active Eavesdropping

School of Telecommunications Engineering, Xidian University, Xi’an 710071, China

Funds: The National Natural Science Foundation of China (62271386, 61971320, 62201421), China Postdoctoral Science Foundation Project (BX20190264, 2019M650258), Key R&D Program Project of Shaanxi Province (2023-YBGY-041), Natural Science Basic Research Plan of Shaanxi Province (2021JQ-206), Guangdong Basic and Applied Basic Research Foundation (2020A1515110084)

摘要

摘要: 针对全双工被动窃听和主动干扰攻击下的多用户非正交多址接入(NOMA)系统，该文提出一种智能超表面(RIS)辅助的鲁棒波束赋形方案以实现物理层安全通信。考虑在仅已知窃听者统计信道状态信息的条件下，以系统传输中断概率和保密中断概率作为约束，通过联合优化基站发射波束赋形、RIS相移矩阵、传输速率和冗余速率，来最大化系统的保密速率。为解决上述多变量耦合非凸优化问题，提出一种有效的交替优化算法得到联合优化问题的次优解。仿真结果表明，所提方案可实现较高的保密速率，且通过增加RIS反射单元数，系统保密性能更佳。
- 智能超表面 /
- 非正交多址接入 /
- 物理层安全 /
- 波束赋形
Abstract: Considering the multi-user Non-Orthogonal Multi-Access(NOMA) system under the full-duplex attack of passive eaves-dropping and active interference at the same time, a robust beamforming scheme based on Reconfigurable Intelligent Surfaces (RIS) is proposed to realize physical layer secure communication. Under the condition that only the channel state information of the eavesdropper is known, the system transmission interruption probability and the confidential interruption probability are taken as the constraints and the system confidentiality rate is maximized by jointly optimizing the base station transmission beamforming, RIS phase shift matrix, transmission rate and redundancy rate. In order to solve the above multivariate coupling non-convex optimization problem, an effective alternating optimization algorithm is proposed to obtain the suboptimal solution of the joint optimization problem. The simulation results show that the proposed scheme can achieve a higher confidentiality rate, and when the number of RIS reflective elements is increased, the system confidentiality performance gets better.
- Reconfigurable Intelligent Surfaces(RIS) /
- Non-Orthogonal Multiple Access(NOMA) /
- Physical layer security /
- Beamforming

HTML全文

图 1 算法收敛图

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图 2 保密速率与基站发射功率的关系

下载: 全尺寸图片幻灯片

图 3 保密速率与RIS反射单元个数N的关系

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图 4 保密速率与用户群位置的关系

下载: 全尺寸图片幻灯片

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