一种基于预编码的MIMO无线隐信道

doi:10.19665/j.issn1001-2400.2022.02.006

西安电子科技大学学报 ›› 2022, Vol. 49 ›› Issue (2): 42-49.doi: 10.19665/j.issn1001-2400.2022.02.006

一种基于预编码的MIMO无线隐信道

曹鹏程¹(),刘伟伟¹(),刘光杰^1,²(),茅伟伟¹(),戴跃伟^1,²()

1.南京理工大学自动化学院,江苏南京 210094
2.南京信息工程大学电子与信息工程学院,江苏南京 210044

收稿日期:2020-07-17 出版日期:2022-04-20 发布日期:2022-05-31
作者简介:曹鹏程(1991—),男,南京理工大学博士研究生,E-mail: caopc@outlook.com;|刘伟伟(1988—),男,副教授,博士,E-mail: lwwnjust5817@gmail.com;|刘光杰(1980—),男,教授,博士,E-mail: gjieliu@qq.com;|茅伟伟(1989—),男,南京理工大学博士研究生,E-mail: banyimao1989@163.com;|戴跃伟(1962—),男,教授,博士,E-mail: dywjust@163.com
基金资助:
国家自然科学基金(U1836104);国家自然科学基金(U1636117);国家自然科学基金(61602247);国家自然科学基金(61702235);江苏省自然科学基金(BK20160840)

MIMO wireless covert channel based on precoding

CAO Pengcheng¹(),LIU Weiwei¹(),LIU Guangjie^1,²(),MAO Weiwei¹(),DAI Yuewei^1,²()

1. School of Automation,Nanjing University of Science & Technology,Nanjing 210094,China
2. School of Electronic& Information Engineering,Nanjing University of Information Science & Technology,Nanjing 210044,China

Received:2020-07-17 Online:2022-04-20 Published:2022-05-31

摘要/Abstract

摘要：

物理层调制类无线隐信道将秘密信息转化为人工噪声传输,以避免被检测发现。在多输入多输出通信场景下,由于传输介质的开放性,检测方可以利用各天线信号存在相关性而发现隐信道。针对这个不足,提出一种基于预编码的多输入多输出无线隐信道。假设发送方与检测方均能获得两者之间多输入多输出信道状态信息,发送方可以利用该信道状态信息对生成的人工噪声进行预编码处理,以去除检测方接收到的多路信号之间的相关性。接收方可通过公开信道传输的该信道状态信息生成预编码矩阵,进而提取出秘密信息。仿真结果表明,所提出的多输入多输出无线隐信道相较于现有方法,去除了检测方接收到的多路信号之间的相关性,有效地提高了抗检测性,同时可靠性有了一定的提高。

关键词: 无线隐信道, 多输入多输出, 抗检测性, 可靠性, 相关性, 预编码

Abstract:

To conceal the existence of secret information,the wireless covert channel established in modulation of the physical layer converts secret information into artificial noise for transmission.In multiple-input multiple-output (MIMO) communication scenarios,due to the openness of the transmission medium,the detector can use the correlation of each antenna signal to discover the covert channel.To solve this problem,this paper proposes a MIMO wireless covert channel based on precoding.Assuming that both the sender and detector can obtain the MIMO channel state information (CSI),the sender can use this CSI to pre-encode the generated artificial noise to remove correlation of the multiple signals received by the detector.The receiver can generate the precoding matrix through the CSI transmitted through the public channel,and then extract secret information.Simulation results show that compared with the existing method,the proposed MIMO wireless covert channel removes the correlation of the multiple signals received by the detector,and effectively improves the undetectability,and that the reliability has been improved to a certain extent.

Key words: wireless covert channel, multiple in multiple out, undetectability, reliability, correlation, precoding

中图分类号:

TP391

曹鹏程,刘伟伟,刘光杰,茅伟伟,戴跃伟. 一种基于预编码的MIMO无线隐信道[J]. 西安电子科技大学学报, 2022, 49(2): 42-49.

CAO Pengcheng,LIU Weiwei,LIU Guangjie,MAO Weiwei,DAI Yuewei. MIMO wireless covert channel based on precoding[J]. Journal of Xidian University, 2022, 49(2): 42-49.

图/表 5

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一种基于预编码的MIMO无线隐信道

MIMO wireless covert channel based on precoding

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