Results 241 to 250 of about 3,510,197 (304)

Concurrent Covert Communication Channels

2010
This paper introduces a new steganographic technique in which a set of concurrent hidden channels are established between a sender and multiple receivers. Each channel is protected by a separate key. The method can work with JPEG blocks in which an 8 × 8 block is divided into four non-overlapping sets, each consisting a covert channel that hides a ...
Md. Amiruzzaman, Hassan Peyravi, Mohammad Abdullah-Al-Wadud, Yoojin Chung   +3 more
openaire   +1 more source

On Covert Communication with Interference Uncertainty

2018 IEEE International Conference on Communications (ICC), 2018
Covert communication can prevent the opponent from knowing that a wireless communication has occurred. If only the additive white Gaussian noise (AWGN) channels and ambient noise are taken into consideration, a square root law was obtained and the result shows that the privacy rate approaches zero asymptotically.
Zhihong Liu, Jiajia Liu 0001, Yong Zeng 0002, Jianfeng Ma 0001, Qiping Huang   +4 more
openaire   +1 more source

UAV-IRS Assisted Covert Communication: Introducing Uncertainty via Phase Shifting

IEEE Wireless Communications Letters
The line-of-sight (LoS) channels introduced by unmanned aerial vehicle (UAV) may lead to the threat of being detected, and thus fail the covert communication.
Xinying Chen, Zheng Chang, Mingqian Liu, Nan Zhao, Timo Hämäläinen, Dusist Niyato   +5 more
semanticscholar   +1 more source

Adversarial Machine Learning Assisted Hybrid Chaotic Covert Communication in OFDM With Subcarrier Index Modulation

IEEE Transactions on Communications
Nowadays, covert communication is envisioned as a promising and secure method of delivering private information. However, a higher bit error rate (BER), limited data rate, and vulnerability to advanced machine learning detection methods significantly ...
Yuwen Qian, Yunfan Bai, Zhen Mei, Shuning Zhang, Yiyang Ni, Long Shi, Feng Shu   +6 more
semanticscholar   +1 more source

RIS-Assisted Integrated Sensing and Covert Communication Design

IEEE Internet of Things Journal
For the sake of enhancing the covertness and sensing performance in the integrated sensing and covert communications (ISCCs) system, we design a beamforming framework for reconfigurable intelligence surface (RIS) assisted ISCC.
Langtao Hu, Rui Yang, Lei Wu, Chongwen Huang, Yu’e Jiang, Li Chen, Xiaobo Zhou   +6 more
semanticscholar   +1 more source

IRS-Assisted Covert Communication With Equal and Unequal Transmit Prior Probabilities

IEEE Transactions on Communications
Despite its potential for reducing the detection probability at the warden, the effectiveness of covert communication in practical situations is often hindered by harsh wireless signal propagation environments. Fortunately, intelligent reflecting surface
Yujie Wu, Xinying Chen, Mingqian Liu, Lexi Xu, Nan Zhao, Xianbin Wang, Derrick Wing Kwan Ng   +6 more
semanticscholar   +1 more source

Channel-Aware Jammer Selection and Power Control in Covert Communication

IEEE Transactions on Vehicular Technology
This paper considers a multi-jammer-assisted covert communication scenario, where a transmitter communicates with a receiver without being detected by a warden under the assistance of multiple friendly jammers.
Rongrong He, Jin Chen, Guoxin Li, Haichao Wang, Yuhua Xu, Weiwei Yang, Yutao Jiao, Wenhui He   +7 more
semanticscholar   +1 more source

Movable Antenna Assisted Covert Communication With Wavelength-Scale Beamforming Resolution

IEEE Transactions on Vehicular Technology
It is challenging for a fixed-position antenna (FPA) system to achieve covert communication when the warden is in close proximity to the intended receiver due to limited beamforming resolution.
Kewei Wang, Tong-Xing Zheng, Jia Shi, Ziyi Yang, Jianping An, Zan Li   +5 more
semanticscholar   +1 more source

On the Impact of Warden Collusion on Covert Communication in Wireless Networks

IEEE Transactions on Information Forensics and Security
Warden collusion represents a hazardous threat to wireless covert communication, where wardens can combine their observations to perform a more aggressive detection attack. This paper investigates the impact of warden collusion on covert communication in
Shuangrui Zhao, Jia Liu, Yulong Shen, Xiaohong Jiang, T. Taleb, Norio Shiratori   +5 more
semanticscholar   +1 more source

Exact Throughput-Covertness Relation for Covert Communications

GLOBECOM 2022 - 2022 IEEE Global Communications Conference, 2022
Daizhong Yu, Lin Yang 0004, Jiawei Liu, Guangrong Yue   +3 more
openaire   +1 more source