窃听者攻击下的RSMA无线通信系统中的物理层安全性能分析

doi:10.3969/j.issn.1671-1122.2024.02.008

信息网络安全 ›› 2024, Vol. 24 ›› Issue (2): 252-261.doi: 10.3969/j.issn.1671-1122.2024.02.008

窃听者攻击下的RSMA无线通信系统中的物理层安全性能分析

黄海燕¹(), 艾宇昕¹, 梁琳琳², 李赞³

1.兰州交通大学电子与信息工程学院，兰州 730070
2.西安电子科技大学网络与信息安全学院，西安 710126
3.西安电子科技大学综合业务网理论及关键技术国家重点实验室，西安 710071

收稿日期:2023-12-14 出版日期:2024-02-10 发布日期:2024-03-06
通讯作者: 黄海燕 E-mail:huanghaiyan@mail.lzjtu.cn
作者简介:黄海燕（1988—），女，甘肃，副教授，博士，主要研究方向为云网边端协同、新型多址接入技术、无人机通信和物理层安全|艾宇昕（1999—），女，山西，硕士研究生，主要研究方向为物理层安全|梁琳琳（1986—），男，河南，讲师，博士，主要研究方向为物理层安全|李赞（1975—），女，陕西，教授，博士，主要研究方向为电磁频谱认知
基金资助:
国家自然科学基金(61901201);国家自然科学基金(62001359);兰州交通大学“天佑青年托举人才计划”(20160013);中央高校基本科研业务费专项资金(ZYTS23163);河南省科技攻关项目(232102211059)

Analysis of Physical Layer Security Performance in RSMA Wireless Communication Systems under Eavesdropper Attacks

HUANG Haiyan¹(), AI Yuxin¹, LIANG Linlin², LI Zan³

1. School of Electronic and Information Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
2. School of Cyber Engineering, Xidian University, Xi’an 710126, China
3. State Key Laboratory of Integrated Service Networks, Xidian University, Xi’an 710071, China

Received:2023-12-14 Online:2024-02-10 Published:2024-03-06
Contact: HUANG Haiyan E-mail:huanghaiyan@mail.lzjtu.cn

摘要/Abstract

摘要：

文章研究一个基于速率分拆多址接入（Rate Splitting Multiple Access，RSMA）技术的多输入单输出下行通信系统。RSMA通过将预期用户的信息进行解码，将其余用户的信息视为噪声来提供最佳性能。此外，RSMA中的公共信息不仅是用户的有用数据，也可以干扰外部窃听者。针对实际应用场景中用户离基站较远的情况，文章提出了存在窃听者的基于RSMA的中继协作传输方案。传输过程分为两个时隙：在第一时隙中，中继接收、解码并转发信号;在第二时隙中，用户接收来自中继的信号。每个用户首先解码公共消息;然后通过应用连续干扰消除（Successive Interference Cancellation，SIC）来解码其私有消息，基于此，推导在瑞利衰落信道下系统的中断概率和窃听者截获概率的闭合表达式;最后，通过蒙特卡洛仿真验证了理论分析的正确性。仿真结果表明，合理选择发射功率以及节点间距离能够有效降低系统的中断概率以及更好地权衡系统的安全性和可靠性。

关键词: RSMA, 中断概率, 物理层安全, 协作通信

Abstract:

This paper studied a multiple-input single-output downlink communication system based on the Rate Splitting Multiple Access (RSMA) technique. RSMA provids optimal performance by decoding the information of the intended user and treating the information of the remaining users as noise. In addition, the public information in RSMA is not only useful data for the user, but could also be used to interfere with external eavesdroppers. For practical application scenarios where users were far away from the base station, this paper proposed an RSMA-based relay cooperative transmission scheme in the presence of eavesdroppers. The transmission process was divided into two time slots: in the first time slot, the relay receives, decodes and forwards the signal; in the second time slot, the user received the signal from the relay. Each user first decoded the public message and then decoded its private message by applying successive interference cancellation (SIC). Based on this, closed expressions for the outage probability and eavesdropper intercept probability of the system under Rayleigh fading channels were derived. Finally, the correctness of the theoretical analysis was verified by Monte Carlo simulation. The simulation results show that a reasonable choice of the transmit power and the distance between nodes can effectively reduce the interruption probability of the system as well as better trade-off between the security and reliability of the system.

Key words: RSMA, outage probability, physical layer security, cooperative communications

中图分类号:

TP309

黄海燕, 艾宇昕, 梁琳琳, 李赞. 窃听者攻击下的RSMA无线通信系统中的物理层安全性能分析[J]. 信息网络安全, 2024, 24(2): 252-261.

HUANG Haiyan, AI Yuxin, LIANG Linlin, LI Zan. Analysis of Physical Layer Security Performance in RSMA Wireless Communication Systems under Eavesdropper Attacks[J]. Netinfo Security, 2024, 24(2): 252-261.

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窃听者攻击下的RSMA无线通信系统中的物理层安全性能分析

Analysis of Physical Layer Security Performance in RSMA Wireless Communication Systems under Eavesdropper Attacks

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