Results 21 to 30 of about 154,545 (256)
Covert underwater acoustic communications
The Journal of the Acoustical Society of America, 2010 Low probability of detection (LPD) communications are conducted at a low received signal-to-noise ratio (SNR) to deter eavesdroppers to sense the presence of the transmitted signal. Successful detection at intended receiver heavily relies on the processing gain achieved by employing the direct-sequence spread-spectrum (DSSS) technique.
Jun Ling +4 more
openaire +2 more sources
Covert Channel Pada Aliran Data Websocket untuk Komunikasi Messaging XMPP
IJCCS (Indonesian Journal of Computing and Cybernetics Systems), 2015 Abstrak Layanan komunikasi Instant Messaging menyediakan berbagai fitur komunikasi yang bisa digunakan oleh pengguna, diantaranya adalah text messaging (pesan teks) baik online maupun offline.
Yoga Dwitya Pramudita, Reza Pulungan
doaj +1 more source
Review on unmanned aerial vehicle covert communication network
Dianxin kexue, 2023 Unmanned aerial vehicle (UAV) communication network is an important part of the future integrated space-aerial-ground network, and an effective support to achieve the global three-dimensional coverage of the communication network.The open characteristics
Hengzhi BAI +3 more
doaj +2 more sources
Performance analysis of covert wireless communication based on beam forming with noise uncertainty
Tongxin xuebao, 2020 In order to establish covert wireless communication in Rayleigh fading environment with noise uncertainty,a scheme of downlink covert wireless communication based on complex Gaussian random coding and beam forming was adopted,and more importantly,the ...
Yuda LIN +3 more
doaj +2 more sources
PLoS ONE, 2020 OBJECTIVES:This study aims to examine associations between spousal communication about contraception and ever use of modern contraception, overt modern contraceptive use (with husband's knowledge), and covert modern contraceptive use (without husband's ...
Sneha Challa +6 more
doaj +1 more source
Covert Wireless Communication with a Poisson Field of Interferers [PDF]
, 2018 In this paper, we study covert communication in wireless networks consisting of a transmitter, Alice, an intended receiver, Bob, a warden, Willie, and a Poisson field of interferers.
He, Biao +3 more
core +5 more sources
Disguised Full-Duplex Covert Communications
Sensors, 2023 Covert communications have arisen as an effective communications security measure that overcomes some of the limitations of cryptography and physical layer security. The main objective is to completely conceal from external devices the very existence of the link for exchanging confidential messages.
openaire +3 more sources
Beamforming Design and Covert Performance Analysis for Full-Duplex Multiantenna System
Complexity, 2021 In this work, a wireless covert communication system with full-duplex (FD) multiantenna receiver is considered. In order to improve the convert performance of the wireless communication system in the FD mode, a scheme based on selection combining/zero ...
Ling Yang +5 more
doaj +1 more source
Analysis of Multiple Antenna Covert Communication Technology Assisted by Artificial Noise [PDF]
Jisuanji kexue yu tansuo, 2022 A multiple antenna covert communication system is considered, which consists of a multi-antenna transmitter, a two-antenna legitimate user and a single-antenna eavesdropping user with power detection function.
GUO Hui, QIAO Ting
doaj +1 more source
Journal of Low Power Electronics and Applications, 2022 With increasing interest in multi-core systems, such as any communication systems, infra-structures can become targets for information leakages via covert channel communication. Covert channel attacks lead to leaking secret information and data.
Parisa Rahimi +2 more
doaj +1 more source