STAR-RIS辅助的NOMA系统物理层安全性能优化

doi:10.11959/j.issn.1000-436x.2024094

通信学报 ›› 2024, Vol. 45 ›› Issue (5): 214-225.doi: 10.11959/j.issn.1000-436x.2024094

STAR-RIS辅助的NOMA系统物理层安全性能优化

李美玲¹(), 王玉旻¹, 王思敬¹, 张海君²

^1.太原科技大学电子信息工程学院，山西太原 030024
^2.北京科技大学计算机与通信工程学院，北京 100083

收稿日期:2023-12-07 修回日期:2024-02-26 出版日期:2024-05-30 发布日期:2024-06-24
通讯作者: 李美玲 E-mail:meilingli@tyust.edu.cn
作者简介:李美玲（1982- ），女，山西宁武人，太原科技大学教授、博士生导师，主要研究方向为移动通信关键技术，包括认知无线电、V2X、协同通信、非正交多址和物理层安全等。
王玉旻（1996- ），男，山西太原人，太原科技大学硕士生，主要研究方向为非正交多址、物理层安全等。
王思敬（1997- ），男，山西运城人，太原科技大学硕士生，主要研究方向为智能反射面通信等。
张海君（1985- ），男，辽宁朝阳人，博士，北京科技大学教授、博士生导师，主要研究方向为6G移动通信、人工智能、无线网络、机器学习等。
基金资助:
国家自然科学基金资助项目(62001320);山西省科技创新人才团队专项计划基金资助项目(202304051001035);山西省科技成果转化引导专项计划基金资助项目(202204021301055);山西省专利转化专项计划基金资助项目(202302003);山西省留学回国人员科研基金资助项目(2021-133);山西省科研实践创新类基金资助项目(2023KY647)

Performance optimization of physical layer security in STAR-RIS aided NOMA system

Meiling LI¹(), Yumin WANG¹, Sijing WANG¹, Haijun ZHANG²

^1.School of Electronic Information Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China
^2.School of Computer & Communication Engineering, University of Science and Technology Beijing, Beijing 100083, China

Received:2023-12-07 Revised:2024-02-26 Online:2024-05-30 Published:2024-06-24
Contact: Meiling LI E-mail:meilingli@tyust.edu.cn
Supported by:
The National Natural Science Foundation of China(62001320);The Special Fund for Science and Technology Innovation Teams of Shanxi Province(202304051001035);The Science and Technology Achievement Transformation Guidance Special Project of Shanxi Province(202204021301055);The Project for Patent Transformation of Shanxi Province(202302003);The Research Project Supported by Shanxi Scholarship Council of China(2021-133);The Graduate Education Innovation Project of Shanxi Province(2023KY647)

摘要/Abstract

摘要：

针对实际通信场景中非理想信道状态信息以及非理想串行干扰删除等非理想因素的强耦合特性使可同时反射和透射的可重构智能超表面（STAR-RIS）辅助的非正交多址接入（NOMA）传输系统安全性能无法准确衡量的问题，提出了基于惩罚对偶分解（PDD）和块坐标下降（BCD）的融合算法，联合优化基站的波束成形矢量和STAR-RIS相移系数，实现系统最低安全传输速率的最大化。结果表明，所提融合算法相比BCD算法可以明显增加最低安全传输速率，性能至少提升10%。

关键词: 可同时反射和透射的可重构智能超表面, 非正交多址接入, 物理层安全, 块坐标下降, 惩罚对偶分解

Abstract:

The strong coupling characteristics of the imperfect channel state information and the imperfect successive interference cancellation makes it faces the great challenge in evaluating the secure performance accurately for the simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided non-orthogonal multiple access (NOMA) transmission systems. To address this issue, a mixed algorithm based on penalty dual decomposition (PDD) and block coordinate descent (BCD) was proposed for optimizing the beamforming vectors at the base station and the phase-shift coefficients of the STAR-RIS jointly, aiming to maximize the minimum secure transmission rate of the system. The results demonstrate that minimum secure transmission rate can be significantly enhanced by the proposed mixed algorithm compared to that by BCD algorithm, achieving the performance improvement by at least 10%.

Key words: simultaneously transmitting and reflecting reconfigurable intelligent surface, non-orthgonal multiple access, physical layer security, block coordinate descent, penalty dual decomposition

中图分类号:

TN929.5

李美玲, 王玉旻, 王思敬, 张海君. STAR-RIS辅助的NOMA系统物理层安全性能优化[J]. 通信学报, 2024, 45(5): 214-225.

Meiling LI, Yumin WANG, Sijing WANG, Haijun ZHANG. Performance optimization of physical layer security in STAR-RIS aided NOMA system[J]. Journal on Communications, 2024, 45(5): 214-225.

图/表 8

图1

表1

仿真相关参数"

仿真参数名称	仿真参数值
基站位置/m	$(0,0, 5)$
STAR-RIS位置/m	$(0,100, 5)$
反射区域UE位置/m	$(0,93,0)$
反射区域Eve位置/m	$(36,66,0)$
透射区域UE位置/m	$(0,107,0)$
透射区域Eve位置/m	$(36,134,0)$
莱斯因子	$β h = 5$
路径损耗指数	$τ h = 2.2$
参考路径损耗/dB	$L = - 30$
信道噪声功率/dBm	$σ 2 = - 80$
ipCSI信道估计误差	$δ 2 = 0.3$
ipSIC残留因子	$η = 0.1$

表1

图2

图3

图4

图5

图6

图7

参考文献 21

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STAR-RIS辅助的NOMA系统物理层安全性能优化

Performance optimization of physical layer security in STAR-RIS aided NOMA system

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