Results 231 to 240 of about 3,510,197 (304)

Covert Communication in Underlay Multi-Antenna Cognitive Radio Networks

IEEE Transactions on Cognitive Communications and Networking
In this paper, we investigated a multi-antenna covert communication in underlay cognitive radio networks (UCRNs), by considering both cases that Willie has the perfect and statistical channel state information (CSI) of the link from the secondary ...
Hongbin Fan, Weiwei Yang, Hui Shi, Gaofeng Pan, Jiangbo Si, Yutao Wang, Chuanzhen Rong   +6 more
semanticscholar   +1 more source

Covert Communication in Backscatter Radio

ICC 2019 - 2019 IEEE International Conference on Communications (ICC), 2019
Covert communication in backscatter radio systems is considered, where the transmitter controls its transmit power to keep the transponder's response hidden, while a warden tries to detect this covert communication. To achieve covertness, we propose a non-conventional transmission scheme where the transmitter emits noise-like signal with transmit power
Khurram Shahzad 0003, Xiangyun Zhou 0001
openaire   +1 more source

Covert Communication of Multi-Antenna AF Relaying Networks

IEEE Transactions on Communications
This paper investigates the covert communication network assisted by the multi-antenna relay, by taking into account two typical scenarios of eavesdropping channel state information (ECSI).
Qi Jin, Lisheng Fan, Xianfu Lei, Junhui Zhao, Arumgam Nallanathan   +4 more
semanticscholar   +1 more source

ASTARS Aided NOMA Covert Communication Networks

IEEE Transactions on Vehicular Technology
The active simultaneously transmitting and reflecting surface (STARS) has been proposed as a complement of passive STARS (PSTARS) to inhibit the double path-loss. This paper applies the active STARS (ASTARS) to aid in non-orthogonal multiple access (NOMA)
Xinwei Yue, Xinlong Song, Jingjing Zhao, Chongwen Huang, Hongxu Jin, Wei Xiang   +5 more
semanticscholar   +1 more source

Generative Adversarial Network-Aided Covert Communication for Cooperative Jammers in CCRNs

IEEE Transactions on Information Forensics and Security
This paper investigates a centralized cooperative cognitive radio network (CCRN) where a primary base station (PBS) transmits a message to a primary user while a secondary user transmitter (SU-Tx) function as a friendly jammer.
Yingkun Wen, Yan Huo, Junhuai Li, Jin Qian, Kan Wang   +4 more
semanticscholar   +1 more source

Detecting covert communication on Android

37th Annual IEEE Conference on Local Computer Networks, 2012
Using covert channels, malicious applications on Android-based smartphones are able to subvert the permission system and share data in a potentially untraceable manner. These channels are easy to exploit today, and have enough bandwidth to transmit sensitive information in real-time between collaborating applications.
Michael Hansen, Raquel Hill, Seth Wimberly   +2 more
openaire   +1 more source

Generative AI-Driven Cross-Layer Covert Communication: Fundamentals, Framework, and Case Study

IEEE Communications Magazine
Ensuring end-to-end cross-layer communication security in military networks by selecting covert schemes between nodes is a key solution for military communication security.
Tianhao Liu, Jiqiang Liu, Tao Zhang, Jian Wang, Jiacheng Wang, Jiawen Kang, D. Niyato, Shiwen Mao   +7 more
semanticscholar   +1 more source

A AAV-Enabled Integrated Sensing and Covert Communication System

IEEE Transactions on Vehicular Technology
In this paper, an integrated sensing and covert communications (ISACC) framework is established for autonomous aerial vehicle (AAV) system, where one mobile AAV is deployed to provide sensing and communication services simultaneously, while there exists ...
Yi Zhou, Pingzhi Fan, Zheng Ma
semanticscholar   +1 more source

Jamming Strategies in Covert Communication

2019
Consider the communication problem where Alice tries to send a message towards Bob while trying to conceal the presence of communication from a watchful adversary, Willie, which tries to determine if a transmission took place or not. Under the basic settings, where all variables are known to Willie, the total amount of information bits that can be ...
Ori Shmuel, Asaf Cohen 0001, Omer Gurewitz   +2 more
openaire   +1 more source

Multi-Antenna Covert Communication Assisted by UAV-RIS With Imperfect CSI

IEEE Transactions on Wireless Communications
In this paper, unmanned aerial vehicle (UAV) and reconfigurable intelligent surfaces (RIS) are combined together to further enhance the covert communication system.
Shengbin Lin, Yitao Xu, Haichao Wang, Guoru Ding   +3 more
semanticscholar   +1 more source