多天线中继系统中基于无线携能通信的物理层安全传输方案

doi:10.12305/j.issn.1001-506X.2023.06.30

系统工程与电子技术 ›› 2023, Vol. 45 ›› Issue (6): 1856-1865.doi: 10.12305/j.issn.1001-506X.2023.06.30

• 通信与网络 • 上一篇

多天线中继系统中基于无线携能通信的物理层安全传输方案

张广大¹^,*, 任清华¹^,², 樊志凯¹

1. 空军工程大学信息与导航学院, 陕西西安 710077
2. 中国电子科技集团公司航天信息应用技术重点实验室, 河北石家庄 050081

收稿日期:2021-10-08 出版日期:2023-05-25 发布日期:2023-06-01
通讯作者: 张广大
作者简介:张广大(1997—), 男, 硕士研究生, 主要研究方向为网络空间安全、物理层安全、协作通信
任清华(1967—), 男, 教授, 硕士, 主要研究方向为军事航空通信、变换域通信、物理层安全
樊志凯(1997—), 男, 硕士研究生, 主要研究方向为网络空间安全、物理层安全、方向调制

Physical layer security transmission schemes based on simultaneous wireless information and power transfer for multi-antenna relay systems

Guangda ZHANG¹^,*, Qinghua REN¹^,², Zhikai FAN¹

1. Information and Navigation College, Air Force Engineering University, Xi'an 710077, China
2. Key Laboratory of Aerospace Information Applications, China Electronics Technology Group, Shijiazhuang 050081, China

Received:2021-10-08 Online:2023-05-25 Published:2023-06-01
Contact: Guangda ZHANG

摘要/Abstract

摘要：

针对多天线协作中继系统中存在信号处理能量受限和保密信息安全传输的问题和挑战, 提出了一种基于无线携能通信和友好干扰信号辅助的两阶段物理层安全传输方案。首先, 建立了基于放大转发中继模式的多天线中继系统模型。其次, 考虑多窃听者非合谋窃听的场景, 分析了系统能量与信息的传输过程, 以最大化系统保密性能为目标, 分别提出了最优传输天线选择策略和基于Q学习(Q-learning)算法的最优干扰天线选择策略。接着, 推导出系统遍历可达保密速率(ergodic achievable secrecy rate, EASR)的表达式。最后, 利用蒙特卡罗仿真方法验证了理论推导的正确性, 并讨论了发射信噪比、功率分裂(power splitting, PS)因子及功率分配系数等参数对系统保密性能的影响。仿真结果表明, 所提出的传输方案相比现有的安全传输方案，系统保密性能有较大的提升。

关键词: 物理层安全, 协作中继, 无线携能通信, Q学习, 功率分裂, 遍历可达保密速率

Abstract:

The two-stage physical layer security transmission scheme based on simultaneous wireless information and power transfer and friendly jamming signals aided is proposed to solve the energy-constrained problem of signal processing and secure transmission issues of confidential information upon the multi-antenna relay systems. Firstly, a multi-antenna relay system model based on the amplify-and-forward relay protocol is established. Secondly, considering the scenario of multiple eavesdroppers and non-collusion eavesdropping, and with the analysis of the transmission process of system energy and information, the optimal transmission antenna selection strategy and the optimal jamming antenna selection strategy based on Q-learning algorithm are respectively proposed in order to maximize the secrecy performance of the system. Thirdly, the expressions of the system's ergodic achievable secrecy rate are derived. Finally, the Monte Carlo simulation method is applied to verify the correctness of the theoretical derivation, and the influence of parameters such as the transmit signal-to-noise ratio, power splitting factor (PS), and power allocation coefficient on the secrecy performance of the system is analyzed. The simulation results show that the proposed transmission scheme outperforms compared with the existing security transmission scheme.

Key words: physical layer security, cooperative relay, simultaneous wireless information and power transfer (SWIPT), Q-learning, power splitting(PS), ergodic achievable secrecy rate(EASR)

中图分类号:

TN918.91

张广大, 任清华, 樊志凯. 多天线中继系统中基于无线携能通信的物理层安全传输方案[J]. 系统工程与电子技术, 2023, 45(6): 1856-1865.

Guangda ZHANG, Qinghua REN, Zhikai FAN. Physical layer security transmission schemes based on simultaneous wireless information and power transfer for multi-antenna relay systems[J]. Systems Engineering and Electronics, 2023, 45(6): 1856-1865.

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参考文献 20

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参数	描述	取值
(x_S, y_S)	源节点S坐标	(0, 0)
(x_D, y_D)	目的节点D坐标	(10, 0)
(x_R, y_R)	中继节点R坐标	(5, 5)
λ_E	窃听节点分布密度/m^-2	0.05
λ_S	源节点发射信噪比/dB	45
λ_D	目的节点发射信噪比/dB	50
ρ	PS因子	0.5
η	能量转化效率	0.7
θ	功率分配系数	0.5
K	天线数目	15
α	路径损耗系数	3
N₀	噪声功率/W	10^-3

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多天线中继系统中基于无线携能通信的物理层安全传输方案

Physical layer security transmission schemes based on simultaneous wireless information and power transfer for multi-antenna relay systems

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