非完美信道状态信息下分布式智能反射面辅助安全通信研究

冯友宏; 张彦峨; 张玉峰; 董国青; 张然; 王晔; 徐龙珠

doi:10.11999/JEIT230942

非完美信道状态信息下分布式智能反射面辅助安全通信研究

doi: 10.11999/JEIT230942

冯友宏^{1, 2, 3, ,},
张彦峨¹,
张玉峰^{1, 5},
董国青^{1, 3},
张然^{1, 4},
王晔¹,
徐龙珠¹

1.
安徽师范大学物理与电子信息学院芜湖 241000
2.
东南大学移动通信国家重点实验室南京 210096
3.
安徽智能机器人信息融合与控制工程实验室芜湖 241000
4.
东南大学毫米波全国重点实验室南京 210096
5.
池州学院机电工程学院池州 247100

基金项目: 国家自然科学基金(62071005)，东南大学移动通信国家重点实验室开放研究基金(2023D14)，安徽省自然科学基金(2008085MF181)，安徽高校协同创新项目(GXXT-2023-109)，毫米波全国重点实验室开放研究基金(K202426)，安徽省高校优秀拔尖人才培育项目(gxyq2022117)

详细信息

作者简介:
冯友宏：男，教授，博士生导师，研究方向为5G/6G移动通信、智能通信、网络安全

张彦峨：女，硕士生，研究方向为5G/6G移动通信、信息论安全

张玉峰：男，博士生，研究方向为5G/6G移动通信、智能通信

董国青：女，博士生，研究方向为5G/6G移动通信、智能通信

张然：女，讲师，研究方向为智能反射面，毫米波通信

王晔：男，讲师，研究生导师，研究方向为无人机通信

徐龙珠：女，硕士生，研究方向为5G/6G移动通信、信息论安全

通讯作者:
冯友宏　yhfeng@ahnu.edu.cn

中图分类号: TN92
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- 被引次数: 0
出版历程
- 收稿日期: 2023-08-30
- 修回日期: 2024-01-25
- 网络出版日期: 2024-02-07
- 刊出日期: 2024-07-29

Research on Distributed Reconfigurable Intelligent Surfaces-Assisted Security Communication under Imperfect Channel State Information

FENG Youhong^{1, 2, 3
, ,},
ZHANG Yane¹,
ZHANG Yufeng^{1, 5},
DONG Guoqing^{1, 3},
ZHANG Ran^{1, 4},
WANG Ye¹,
XU Longzhu¹

1.
School of Physics and Electronic Information, Anhui Normal University, Wuhu 241002, China
2.
National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
3.
Anhui Provincial Engineering Laboratory on Information Fusion and Control of Intelligent Robot, Wuhu 241000, China
4.
The State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
5.
School of Mechanical and Electrical Engineering, Chizhou University, Chizhou 247100, China

Funds: The National Natural Science Foundation of China (62071005), The open research fund of National Mobile Communications Research Laboratory, Southeast University (2023D14), The Natural Science Foundation of Anhui Province (2008085MF1811), The University Synergy Innovation Program of Anhui Province (GXXT-2023-109), The open research fund of State Key Laboratory of Millimeter Waves (K202426), The Excellent Young Talents Support Program in Colleges and Universities (gxyq2022117)

摘要

摘要: 针对非完美信道状态信息(CSI)下分布式智能反射面(RIS)安全通信问题，该文构建基于基站波束成形、人工噪声(AN)和RISs相移的联合优化问题，并提出相对应优化方法和1维线性搜索的有效算法来求解所构建的非凸优化方程。仿真结果表明：相对于随机相位、无AN辅助的安全传输策略，所提方法在非完美CSI场景可取得更高的安全传输速率；在总反射单元数目固定情况下，分布单元数目越多，所提算法优越性越明显；进一步，所提算法具有更强的鲁棒性，即本策略能更好地适应信道不确定性。
- 智能反射面 /
- 物理层安全 /
- 分布式 /
- 鲁棒性 /
- 非凸优化
Abstract: Considering the secure communication of the distributed Reconfigurable Intelligent Surfaces (RISs) under imperfect Channel State Information (CSI), a joint optimization problem of the secrecy rate maximization based on the active beamforming, Artificial Noise(AN), and RISs’ phase shifts is formulated. Then an efficient algorithm based on alternating optimization and 1-Dimensional linear search is proposed to solve the non-convex optimization problem. Simulation results demonstrate that, compared with the random phase optimization scheme and the secure transmission without AN scheme, the proposed scheme can achieve a higher secrecy rate. The superiority of the proposed scheme over the other transmission schemes becomes more prominent with the increase of the number of distribution units. The proposed scheme has better robustness than the other transmission schemes to the uncertainty of communication channel in our considered network.
- Reconfigurable Intelligent Surface(RIS) /
- Physical layer security /
- Distributed /
- Robustness /
- Non-convex optimization

HTML全文

图 1 非完美CSI下分布式RIS辅助无线通信系统模型

下载: 全尺寸图片幻灯片

图 2 系统的安全速率与算法迭代次数的关系

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图 3 系统的安全速率与基站发射功率的关系

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图 4 系统的安全速率与RISs总反射单元数的关系

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图 5 系统的安全速率与系统CSI不确定性关系

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图 6 系统的安全速率与系统CSI不确定性关系

下载: 全尺寸图片幻灯片

1 AO整体算法流程

输入：迭代次数$ r = 0 $，初始值${{\boldsymbol{W}}^0},{{\boldsymbol{Z}}^0},{{\boldsymbol{\varTheta }}^0} $, $ {\alpha ^0},{\beta ^0} $，容错误差　$\varepsilon \gt 0 $；
步骤1 循环执行操作：
(1)固定变量${\boldsymbol{W}},{\boldsymbol{Z}},{\boldsymbol{\varTheta }},\beta $，在问题${\text{P}}6 $中对$\alpha $执行一维线性搜索；
(2)固定变量$ {\boldsymbol{\varTheta}} ,\alpha $，使用CVX工具箱求解问题${\text{P}}8 $中的参数　${\boldsymbol{W}},{\boldsymbol{Z}},\beta $；
(3)固定变量${\boldsymbol{W}},{\boldsymbol{Z}},\alpha ,\beta $，对问题$ {\text{P}}10 $采用PCCP方法获得${\boldsymbol{\varTheta }} $；
直到收敛：$\dfrac{{\left\| {\bar R_{\mathrm{s}}^r - \bar R_{\mathrm{s}}^{r - 1}} \right\|}}{{R_{\mathrm{s}}^r}} \le \varepsilon $；
输出：参数${\boldsymbol{W}},{\boldsymbol{Z}},{\boldsymbol{\varTheta }},\alpha ,\beta $。

下载: 导出CSV

表 1 参数设置

参数变量	对应数值
带宽	$ B = 1\;{\mathrm{MHz }}$
噪声功率谱密度	$ \sigma _k^2 = \sigma _{\rm e}^2 = - 174\;{\mathrm{dBm}}/{\mathrm{Hz}} $
容错误差	$ \varepsilon = {10^{ - 6}} $
路径损耗指数	$ {\alpha _{{\mathrm{BI}}}} = {\alpha _{{\mathrm{IRS}}}} = 2.2 $
BS最大发射功率	$ {P_{\max }} = 10\;{\mathrm{dBm}} $
基站天线数	$ {N_t} = 4 $
总RIS单元数	$ M = 24 $
CSI不确定程度	$ \delta _{\rm u}^{} = 0.2,\delta _{\rm e}^{} = 0.2 $

下载: 导出CSV

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