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

LI Meiling; WANG Yumin; WANG Sijing; ZHANG Haijun

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

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

Correspondences | 更新时间：2024-06-24

- Performance optimization of physical layer security in STAR-RIS aided NOMA system
- Journal on Communications Vol. 45, Issue 5, Pages: 214-225(2024)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
  
  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)
- DOI：10.11959/j.issn.1000-436x.2024094
  CLC： TN929.5
- Received：07 December 2023，
  
  Revised：2024-02-26，
  
  Published：30 May 2024
- 稿件说明：
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李美玲,王玉旻,王思敬等.STAR-RIS辅助的NOMA系统物理层安全性能优化[J].通信学报,2024,45(05):214-225.

LI Meiling,WANG Yumin,WANG Sijing,et al.Performance optimization of physical layer security in STAR-RIS aided NOMA system[J].Journal on Communications,2024,45(05):214-225.
李美玲,王玉旻,王思敬等.STAR-RIS辅助的NOMA系统物理层安全性能优化[J].通信学报,2024,45(05):214-225. DOI： 10.11959/j.issn.1000-436x.2024094.

LI Meiling,WANG Yumin,WANG Sijing,et al.Performance optimization of physical layer security in STAR-RIS aided NOMA system[J].Journal on Communications,2024,45(05):214-225. DOI： 10.11959/j.issn.1000-436x.2024094.

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%。

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%.

关键词

Keywords

references

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