车联网CR-NOMA系统物理层安全性能分析

doi:10.13190/j.jbupt.2021-085

北京邮电大学学报 ›› 2022, Vol. 45 ›› Issue (1): 115-120.doi: 10.13190/j.jbupt.2021-085

车联网CR-NOMA系统物理层安全性能分析

李美玲¹, 杨晓霞¹, 成文杰¹, 路兆铭²

1. 太原科技大学电子信息工程学院, 太原 030024;
2. 北京邮电大学信息与通信工程学院, 北京 100876

收稿日期:2021-05-12 出版日期:2022-02-28 发布日期:2021-12-16
通讯作者: 杨晓霞(1995—),女,硕士生,邮箱:s20180393@stu.tyust.edu.cn E-mail:s20180393@stu.tyust.edu.cn
作者简介:李美玲(1982—),女,教授,硕士生导师
基金资助:
国家自然科学基金项目（62001320）；中央引导地方科技发展资金项目（YDZJSX2021A037）；山西省回国留学人员科研资助项目（2021-133）；山西省研究生教育创新项目（2019SY491，2020SY419）

Physical Layer Security for CR-NOMA System in Vehicle-to-Everything

LI Meiling¹, YANG Xiaoxia¹, CHENG Wenjie¹, LU Zhaoming²

1. School of Electronics and Information Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China;
2. School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

Received:2021-05-12 Online:2022-02-28 Published:2021-12-16

摘要/Abstract

摘要： 认知无线电—非正交多址接入（CR-NOMA）能够满足第5代移动通信系统的大规模连接，实现车联网的低时延、低功耗和广覆盖。针对协作CR-NOMA的车联网络，基于保密中断概率分析了主用户的物理层安全传输性能，并研究了次用户发射信噪比、次用户数量、保密速率以及功率分配系数对主用户保密中断概率的影响。仿真结果表明，在窃听者存在的情况下，通过增大次用户发射信噪比、选取次用户数量以及合适的目标速率能够降低主用户的保密中断概率，从而提升主用户系统的物理层安全性能。

关键词: 认知无线电, 非正交多址接入, 物理层安全, 保密中断概率

Abstract: Cognitive radio non-orthogonal multiple access (CR-NOMA) can meet large-scale connection requirements of the fifth generation of mobile communications system, and satisfy the demands of low latency, low power consumption and wide coverage of vehicle-to-everything communications. The physical layer security of the primary user of cooperative CR-NOMA network based on vehicle-to-everything is analyzed by deriving the secrecy outage probability. The influences of the transmission signal-to-noise ratio of secondary user, the number of secondary users, the target rate and the power allocation coefficient on the secrecy outage probability of primary user are studied. Both analysis and simulation results show that, in the presence of eavesdropper, the secrecy outage probability of the primary user of the considered network can be reduced by increasing the transmission signal-to-noise ratio of secondary user, appropriately selecting the number of secondary users and setting a proper target rate to improve the physical layer security.

Key words: cognitive radio, non-orthogonal multiple access, physical layer security, secrecy outage probability

中图分类号:

TN929.5

李美玲, 杨晓霞, 成文杰, 路兆铭. 车联网CR-NOMA系统物理层安全性能分析[J]. 北京邮电大学学报, 2022, 45(1): 115-120.

LI Meiling, YANG Xiaoxia, CHENG Wenjie, LU Zhaoming. Physical Layer Security for CR-NOMA System in Vehicle-to-Everything[J]. Journal of Beijing University of Posts and Telecommunications, 2022, 45(1): 115-120.

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车联网CR-NOMA系统物理层安全性能分析

Physical Layer Security for CR-NOMA System in Vehicle-to-Everything

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