Results 1 to 10 of about 3,135 (96)
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.
Ismail Shakeel +3 more
doaj +2 more sources
Design of Covert Communication Waveform Based on Phase Randomization [PDF]
EntropyCovert wireless communication is designed to securely transmit hidden information between two devices. Its primary objective is to conceal the existence of transmitted data, rendering communication signals difficult for unauthorized parties to detect ...
Wenjie Zhou +3 more
doaj +2 more sources
IEEE Access, 2021 Due to the rapid development of modern communication technology and the substantial improvement of the processing capacity of communication equipment, it has become a challenging and meaningful research direction to realize the covert transmission of ...
Shengnan Guo, Yongqing Fu
doaj +1 more source
Analysis of Low Probability of Detection Capability for Chaotic Standard Map-Based FH-OFDMA System
Applied Sciences, 2021 A frequency hopping orthogonal frequency division multiple access (FH-OFDMA) can provide low probability of detection (LPD) and anti-jamming capabilities to users against adversary detectors. To obtain an extreme LPD capability that cannot be provided by
Junwoo Jung +4 more
doaj +1 more source
Implementation of a Noise-Shaped Signaling System through Software-Defined Radio
Applied Sciences, 2022 Along with the development of electromagnetic weapons, Electronic Warfare (EW) has been rising as the future form of war. Especially in the area of wireless communications, high security defense systems such as Low Probability of Detection (LPD), Low ...
Junsung Choi +3 more
doaj +1 more source
Detection of Dolphin Whistle-Like Biomimicking Signals by Phase Analysis
IEEE Access, 2022 The application of low probability of detection (LPD) in underwater acoustic communication is challenging due to the limited bandwidth and frequency band available that allows simple interception using energy detection.
Itamar Davidesco, Roee Diamant
doaj +1 more source
From Constellation Dithering to NOMA Multiple Access: Security in Wireless Systems
Sensors, 2021 In recent years, there has been a noticeable increase in interest in the possibilities of embedding additional data in the constellation of an already existing information signal in radio technology.
Krystian Grzesiak, Zbigniew Piotrowski
doaj +1 more source
Evaluating HPA Effects on Chaotic Sequence Spread Spectrum Detectability
IEEE Access, 2023 Digital chaotic sequence spread spectrum (CSSS) communication systems provide a number of advantages for secure communications due to the apparent bandlimited Gaussian noise-like signal characteristics and the non-repeating nature of the underlying ...
Lori Bowler, Alan J. Michaels
doaj +1 more source
A Real Orthogonal Space-Time Coded UWB Scheme for Wireless Secure Communications
EURASIP Journal on Wireless Communications and Networking, 2009 Recent research reveals that information security and information-hiding capabilities can be enhanced by proper exploitation of space-time techniques. Meanwhile, intrinsic properties of ultra-wideband (UWB) signals make it an outstanding candidate for ...
Zhang Yanbing, Dai Huaiyu
doaj +2 more sources
Low Probability of Detection for Underwater Acoustic Communication: A Review
IEEE Access, 2018 Low probability of detection (LPD) is an extremely important characteristic of an underwater acoustic communication (UWAC) system when used for military-related applications, since the detection of a communication signal in the channel may reveal the ...
Roee Diamant, Lutz Lampe
doaj +1 more source