Physical Layer Covert Communication in B5G Wireless Networks-its Research, Applications, and Challenges

Physical layer covert communication is a crucial secure communication technology that enables a transmitter to convey information covertly to a recipient without being detected by adversaries. Unlike typical cryptography and physical layer security systems that concentrate on protecting the sent sig...

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Published inProceedings of the IEEE Vol. 112; no. 1; pp. 47 - 82
Main Authors Jiang, Yu'e, Wang, Liangmin, Chen, Hsiao-Hwa, Shen, Xuemin
Format Journal Article
LanguageEnglish
Published New York IEEE 01.01.2024
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
5G mobile communication
Communication
Communication security
Communication system security
Communications technology
covert communications
Cryptography
Encoding
jammer-/relay-aided communications
multiantenna
Physical layer
Research and development
Security
Security systems
Steganography
Telecommunication services
Transmitters
Wireless communications
Wireless networks
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Summary:Physical layer covert communication is a crucial secure communication technology that enables a transmitter to convey information covertly to a recipient without being detected by adversaries. Unlike typical cryptography and physical layer security systems that concentrate on protecting the sent signal content, covert communications seek to conceal the existence of legitimate transmission. Thus, with beyond fifth-generation (B5G) wireless communications, covert communications can operate in tandem or as a supplement to conventional security techniques. We provide an extensive overview of the basic theories and several strategies in physical layer covert communications in this article. In particular, we go into great detail about the basic theories of physical layer covert communications, such as channel models, codes, secret keys, and covertness metrics, as well as various covert schemes in progressively more complicated scenarios, such as covert communications in single-antenna and multiantenna three-node systems and covert communications in jammer- and relay-aided systems. In addition, we identify the challenges and future directions for research on covert communications in B5G wireless networks.
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ISSN:0018-9219
1558-2256
DOI:10.1109/JPROC.2024.3364256