Results 21 to 30 of about 9,520 (287)

On Secrecy Performance of Mixed THz-FSO Relaying System

open access: yes2023 IEEE Conference on Standards for Communications and Networking (CSCN), 2023
<p>Terahertz (THz) frequency band and free-space optical (FSO) communication can be proven potential solutions to the spectrum scarcity challenges in the emerging applications in the 6G. In this direction, a mixed THz-FSO relaying system is proposed in this paper.
Ahmad Ijaz, Huusko Jyrki, Singh Rupender
openaire   +2 more sources

On the Use of HAPS to Increase Secrecy Performance in Satellite Networks [PDF]

open access: yes2021 IEEE International Conference on Communications Workshops (ICC Workshops), 2021
In this paper, we investigate the secrecy performance of radio frequency (RF) eavesdropping for a high altitude platform station (HAPS) aided satellite communication (SatCom) system. More precisely, we propose a new SatCom scheme where a HAPS node is used as an intermediate relay to transmit the satellite's signal to the ground station (GS).
Olfa Ben Yahia   +2 more
openaire   +2 more sources

Secrecy Performance of SIMO Underlay Cognitive Radio Networks Over α – μ Fading Channels

open access: yesIEEE Access, 2021
This paper investigates the secrecy performance of a single-input multiple-output (SIMO) based underlay cognitive radio networks. In particular, a single-antenna secondary transmitter transmits its secret message to a multi-antenna equipped secondary ...
Suneel Yadav, Devendra Singh Gurjar
doaj   +1 more source

Secure Transmission in mmWave Wiretap Channels: On Sector Guard Zone and Blockages

open access: yesEntropy, 2019
Millimeter-wave (mmWave) communication is one of the key enabling technologies for fifth generation (5G) mobile networks. In this paper, we study the problem of secure communication in a mmWave wiretap network, where directional beamforming and link ...
Yi Song   +4 more
doaj   +1 more source

Comprehensive Physical Layer Security Analysis of FSO Communications Over Málaga Channels

open access: yesIEEE Photonics Journal, 2020
In this article, we study the physical layer security of free-space optical (FSO) communications under different eavesdropping scenarios. More specifically, the secrecy performance of FSO communication employing intensity modulation/direct detection ...
Yun Ai   +4 more
doaj   +1 more source

Secrecy Outage Performance Analysis for Cooperative NOMA Over Nakagami- $m$ Channel

open access: yesIEEE Access, 2019
In this paper, we investigate the secrecy outage performance of a typical cooperative downlink non-orthogonal multiple access (NOMA) system over Nakagami-m fading channel, in which the base station transmits a superimposed signal to two users via a relay.
Chao Yu, Hak-Lim Ko, Xin Peng, Wenwu Xie
doaj   +1 more source

Impact of Self-Energy Recycling and Cooperative Jamming on SWIPT-Based FD Relay Networks With Secrecy Constraints

open access: yesIEEE Access, 2022
This paper investigates the secrecy performance of a power splitting-based simultaneous wireless information and power transfer cooperative relay network in the presence of an eavesdropper.
Isabella Wanderley Gomes Da Silva   +3 more
doaj   +1 more source

Secrecy Performance Analysis for Reconfigurable Intelligent Surface aided NOMA Network [PDF]

open access: yes, 2021
Reconfigurable Intelligent Surface (RIS) technology is emerging as a promising performance enhancement for next-generation wireless networks in terms of the quality of service and radio connectivity. Inspired by the promising potential of RIS technology,
Yuanwei Liu   +10 more
core   +1 more source

Secrecy Performance of Land Mobile Satellite Systems With Imperfect Channel Estimation and Multiple Eavesdroppers

open access: yesIEEE Access, 2019
The inherent broadcast nature has exposed the land mobile satellite (LMS) communication systems to severe security threats in both the civil and military applications.
Yusheng Li   +3 more
doaj   +1 more source

Accounting for secrets [PDF]

open access: yes, 2013
The Soviet dictatorship used secrecy to shield its processes from external scrutiny. A system of accounting for classified documentation assured the protection of secrets.
Harrison, Mark
core   +1 more source

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