Results 261 to 270 of about 349,876 (317)
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STAR-RIS Aided Covert Communication in UAV Air-Ground Networks
IEEE Journal on Selected Areas in CommunicationsThe 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 +6 more
semanticscholar +1 more source
2018
Examining all the issues needed to consider when deploying investigative tools under the Regulation of Investigatory Powers Act 2000 (RIPA) and the Investigatory Powers Act 2016, this book provides a detailed guide to this important, complex, and sometimes controversial area of the law.
Harfield, Clive, Harfield, Karen
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Examining all the issues needed to consider when deploying investigative tools under the Regulation of Investigatory Powers Act 2000 (RIPA) and the Investigatory Powers Act 2016, this book provides a detailed guide to this important, complex, and sometimes controversial area of the law.
Harfield, Clive, Harfield, Karen
openaire +4 more sources
Improving Age of Information for Covert Communication With Time-Modulated Arrays
IEEE Internet of Things JournalPhased 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 +6 more
semanticscholar +1 more source
Achieving Covert Wireless Communication With a Multi-Antenna Relay
IEEE Transactions on Information Forensics and Security, 2022We investigate covert wireless communication in a multi-antenna relay network, where the relay transmits its own covert message to the destination when assisting the source’s information delivery, and the source acts as a warden to detect this covert ...
Lu Lv +4 more
semanticscholar +1 more source
STAR-RIS-Assisted Covert Wireless Communications With Randomly Distributed Blockages
IEEE Transactions on Wireless CommunicationsAs one of the promising technologies, reconfigurable intelligent surface (RIS) and simultaneous transmitting and reflecting RIS (STAR-RIS) have attracted great interest.
Xingwang Li +7 more
semanticscholar +1 more source
IEEE Transactions on Communications, 2021
This article investigates the intelligent reflecting surface (IRS)-aided multi-antenna covert communications. In particular, with the help of an IRS, a favorable communication environment can be established via controllable intelligent signal reflection,
Chao Wang +3 more
semanticscholar +1 more source
This article investigates the intelligent reflecting surface (IRS)-aided multi-antenna covert communications. In particular, with the help of an IRS, a favorable communication environment can be established via controllable intelligent signal reflection,
Chao Wang +3 more
semanticscholar +1 more source
Movable-Antenna Enabled Covert Communication
IEEE Wireless Communications LettersConventional 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 +4 more
semanticscholar +1 more source
Psychological Reports, 1967
A new treatment for maladaptive approach behavior (“covert sensitization”) is described. The term “covert” is used because neither the undesirable stimulus nor the aversive stimulus is actually presented. These stimuli are presented in imagination only.
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A new treatment for maladaptive approach behavior (“covert sensitization”) is described. The term “covert” is used because neither the undesirable stimulus nor the aversive stimulus is actually presented. These stimuli are presented in imagination only.
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NeuroRehabilitation
Covert consciousness is a state of residual awareness following severe brain injury or neurological disorder that evades routine bedside behavioral detection. Patients with covert consciousness have preserved awareness but are incapable of self-expression through ordinary means of behavior or communication.
Michael J, Young +2 more
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Covert consciousness is a state of residual awareness following severe brain injury or neurological disorder that evades routine bedside behavioral detection. Patients with covert consciousness have preserved awareness but are incapable of self-expression through ordinary means of behavior or communication.
Michael J, Young +2 more
openaire +2 more sources
Covert mmWave Communications With Finite Blocklength Against Spatially Random Wardens
IEEE Internet of Things JournalIn this article, we investigate covert millimeter-wave (mmWave) communications with finite blocklength, where a multiantenna transmitter sends covert messages to a legitimate receiver in the presence of spatially random wardens. Both the phase array (PA)
Ruiqian Ma +5 more
semanticscholar +1 more source