Results 221 to 230 of about 3,510,197 (304)

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

Proceedings of the IEEE
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.
Hsiao-Hwa Chen, Yu`E Jiang, Xuemin Shen   +2 more
exaly   +2 more sources

Covert Satellite Communication Over Overt Channel: A Randomized Gaussian Signalling Approach

IEEE Transactions on Aerospace and Electronic Systems
In this article, we design a covert satellite communication scheme over an overt channel by randomizing the variance feature of the transmitted Gaussian signaling to realize a positive covert rate. The transmitter Alice sends an overt signal superimposed
, Jianping An, Neng Ye
exaly   +2 more sources

Covert Communication With Cognitive Jammer

IEEE Wireless Communications Letters, 2020
This letter studied the covert communication with the help of the cognitive jammer over an additive white Gaussian noise (AWGN) channel. The cognitive jammer first senses Alice’s transmission; then, based on its sensing results, it determines whether to transmit the jamming signal.
Wenhui Xiong, Yinfeng Yao, Xiaoyu Fu, Shaoqian Li   +3 more
openaire   +1 more source

Covert and Deniable Communications

Proceedings of the 6th ACM Workshop on Information Hiding and Multimedia Security, 2018
At the first Information Hiding Workshop in 1996 we tried to clarify the models and assumptions behind information hiding. We agreed the terminology of cover text and stego text against a background of the game proposed by our keynote speaker Gus Simmons: that Alice and Bob are in jail and wish to hatch an escape plan without the fact of their ...
openaire   +1 more source

STAR-RIS Aided Covert Communication in UAV Air-Ground Networks

IEEE Journal on Selected Areas in Communications
The combination of a simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) and an unmanned aerial vehicle (UAV) can further improve channel quality and extend coverage.
Qunshu Wang, Shaoyong Guo, Celimuge Wu, Chengwen Xing, Nan Zhao, Dusist Niyato, G. Karagiannidis   +6 more
semanticscholar   +1 more source

Keyless asynchronous covert communication

2016 IEEE Information Theory Workshop (ITW), 2016
We consider a scenario in which Alice asynchronously communicates with Bob over a Discrete Memoryless Channel (DMC) while escaping detection from an adversary who observes their communication through another DMC. Specifically, Alice transmits codewords of length n and chooses the transmission epoch T uniformly at random among N available time epochs ...
Keerthi Suria Kumar Arumugam, Matthieu R. Bloch   +1 more
openaire   +1 more source

Exploiting STAR-RIS for Covert Communication in ISAC Networks Under Imperfect CSI

IEEE Transactions on Vehicular Technology
In this paper, we investigate the use of simultaneously transmitting and reflecting reconfigurable intelligence surface (STAR-RIS) to realize covert communication in a millimeter-wave integrated sensing and communication (ISAC) network under imperfect ...
Zhipeng Liu, Xi Li, Hong Ji, Heli Zhang, Victor C. M. Leung   +4 more
semanticscholar   +1 more source

Improving Age of Information for Covert Communication With Time-Modulated Arrays

IEEE Internet of Things Journal
Phased array (PA) has received considerable attention as a representative multiantenna technique due to its inherent advantages of superior directionality, spatial multiplexing capabilities, and robust anti-jamming characteristics.
Yue Ma, R. Ma, Zhi Lin, Ruoyu Zhang, Yueming Cai, Wen Wu, Jiangzhou Wang   +6 more
semanticscholar   +1 more source

Movable-Antenna Enabled Covert Communication

IEEE Wireless Communications Letters
Conventional multi-antenna technology with fixed position antenna (FPA) array cannot make full use of the spatial degree of freedom offered by wireless channels.
Pengpeng Liu, Jiangbo Si, Zihao Cheng, Zan Li, Hang Hu   +4 more
semanticscholar   +1 more source

STAR-RIS-Empowered Integrated Sensing and Covert Communication System With Movable Elements: Joint Robust Beamforming and Element Deployment Design

IEEE Transactions on Cognitive Communications and Networking
This paper investigates the integrated sensing and covert communication (ISCC) system, which is empowered by a simultaneous transmission and reflection reconfigurable intelligent surface (STAR-RIS) with movable elements (MEs).
Tao Zhou, Kui Xu, Guojie Hu, Chunguo Li, Xiaochen Xia, Chen Wei, Yufan Chen   +6 more
semanticscholar   +1 more source