Disguised Full-Duplex Covert Communications [PDF]
Sensors, 2023 Covert communications have arisen as an effective communications security measure that overcomes some of the limitations of cryptography and physical layer security.
Jihwan Moon
exaly +4 more sources
Gaussian-Distributed Spread-Spectrum for Covert Communications [PDF]
Sensors, 2023 Covert communication techniques play a crucial role in military and commercial applications to maintain the privacy and security of wireless transmissions from prying eyes.
Weimin Zhang
exaly +4 more sources
Performance Comparison of Relay-Based Covert Communications: DF, CF and AF [PDF]
Sensors, 2023 In this paper, we investigate the performance of covert communications in different types of a relay system: decode-and-forward (DF), compress-and-forward (CF) and amplify-and-forward (AF).
Jihwan Moon
exaly +4 more sources
Covert Communications via Full-Duplex User Relaying [PDF]
SensorsIn this paper, we investigate a covert communication system with a full-duplex decode-and-forward (DF) relay and introduce a user-relaying scheme that maximizes the covert rate while ensuring the covertness requirement.
Jong Yeol Ryu, Jung Hoon Lee
doaj +2 more sources
Covert Communications in a Hybrid DF/AF Relay System [PDF]
SensorsIn this paper, we study covert communications in a hybrid decode-and-forward (DF)/ amplify-and-forward (AF) relay system. The considered relay in normal operation forwards messages from a source node to a destination node in either DF or AF mode on ...
Jihwan Moon
doaj +2 more sources
Adversarial Machine Learning for NextG Covert Communications Using Multiple Antennas [PDF]
Entropy, 2022 This paper studies the privacy of wireless communications from an eavesdropper that employs a deep learning (DL) classifier to detect transmissions of interest.
Brian Kim +4 more
doaj +2 more sources
Cooperative Jamming and Relay Selection for Covert Communications Based on Reinforcement Learning [PDF]
SensorsTo overcome the obstacles of maintaining covert transmissions in wireless networks employing collaborative wardens, we develop a reinforcement learning framework that jointly optimizes cooperative jamming strategies and relay selection mechanisms.
Jin Qian +5 more
doaj +2 more sources
Covert Communications With Constrained Age of Information [PDF]
IEEE Wireless Communications Letters, 2021 5 pages, 3 ...
Weiwei Yang, Weiwei Yang, Yueming Cai
exaly +3 more sources
Joint Hovering Height, Power, and Rate Optimization for Air-to-Ground UAV-RSMA Covert Communications
Drones, 2023 In this paper, we investigate covert communications for an unmanned aerial vehicle (UAV)-aided rate-splitting multiple access (RSMA) system in which the UAV transmits to the covert and public users separately while shielding covert transmissions from a ...
Hongwu Liu, Zhiquan Bai, Pengxu Chen
exaly +3 more sources
Polar Codes for Covert Communications over Asynchronous Discrete Memoryless Channels [PDF]
Entropy, 2017 This paper introduces an explicit covert communication code for binary-input asynchronous discrete memoryless channels based on binary polar codes, in which legitimate parties exploit uncertainty created by both the channel noise and the time of ...
Guillaume Frèche +2 more
doaj +2 more sources