Results 101 to 110 of about 1,268,348 (125)

Physical Layer Security for Keyhole-based NOMA Downlink Systems with a Multi-antenna Eavesdropper

Journal of Telecommunications and Information Technology
This paper investigates the physical layer security of downlink nonorthogonal multiple access (NOMA) systems operating over a degenerate keyhole channel in the presence of a multi-antenna eavesdropper. We propose a joint antenna selection framework with
Sang-Quang Nguyen, Chi-Bao Le
doaj   +1 more source

Physical Layer Security Performance Analysis of the FD-Based NOMA-VC System

IEEE Access, 2019
In this paper, we consider the secrecy outage probability (SOP) of a cooperative non-orthogonal multiple access (NOMA) vehicular communication (VC) system, where the relay is working in either half-duplex (HD) or full-duplex (FD) mode. We assume that all
Wenwu Xie, Jianwu Liao, Chao Yu, Peng Zhu, Xinzhong Liu   +4 more
doaj   +1 more source

Physical Layer Security in RIS-Assisted THz-Enabled LEO Satellite Communications

IEEE Open Journal of the Communications Society
Satellite networks are expected to play a key role in achieving global coverage in the sixth generation (6G) of wireless communications systems. Despite their potential, the operation of extensive satellite constellations introduces distinct challenges ...
Felipe Augusto Dutra Bueno, Majid H. Khoshafa, Telex M. N. Ngatched   +2 more
doaj   +1 more source

Secrecy of Opportunistic User Scheduling in RIS-Aided Systems: A Comparison with NOMA Scheduling

, 2023
In this paper, we propose an opportunistic user scheduling scheme in a multi-user reconfigurable intelligent surface (RIS) aided wireless system to improve secrecy.
Kundu, Chinmoy, Wafai, Burhan, Dubey, Ankit, Flanagan, Mark F., Ghose, Sarbani   +4 more
core  

Secrecy Outage of Proactive Relay Selection by Eavesdropper

, 2017
In this paper, we consider an active eavesdropping scenario in a cooperative system consisting of a source, a destination, and an active eavesdropper with multiple decode-And-forward relays.
Octavia A. Dobre, Kundu, Chinmoy, Ghose, Sarbani, Dobre, Octavia A., Chinmoy Kundu, Sarbani Ghose   +5 more
core   +1 more source

Rethinking the secrecy outage formulation: A secure transmission design perspective

, 2011
This letter studies information-theoretic security without knowing the eavesdropper's channel fading state. We present an alternative secrecy outage formulation to measure the probability that message transmissions fail to achieve perfect secrecy.
Xiangyun Zhou, Zhou, Xiangyun, Hjørungnes, Are, Behrouz Maham, McKay, Matthew R., Maham, Behrouz, Matthew R. McKay, Are Hjorungnes, McKay, Matthew R, Maham , Behrouz   +9 more
core   +1 more source

On the physical layer security of correlated Weibull fading channels with transmitter side information in the presence of a passive eavesdropper

Alexandria Engineering Journal
In this paper, we analyze the performance of physical layer security (PLS) in Weibull fading wiretap channels (WTC), leveraging realistic channel propagation models in which the channel coefficients of the main (transmitter-to-legitimate receiver) and ...
Ali Mohammad Khodadoust, Mario Eduardo Rivero-Ángeles, Víctor Barrera-Figueroa   +2 more
doaj   +1 more source

Space Diversity-Based Hybrid Decode Amplify and Forward Cooperative Relay Protocol

ABUAD Journal of Engineering Research and Development
In today's wireless communication systems, ensuring secure and reliable data transmission is essential due to the increasing complexities of eavesdropping techniques and the demand for improved signal delivery.
Job Adedamola Adeleke, Opeyemi Oyelaran
doaj   +1 more source

Secrecy Performance of Backscatter Communication Networks with Multiple Reader and Tag Selection Schemes [PDF]

This paper investigates the secrecy performance of optimal tag selection (OTS) and random tag selection (RTS) schemes of a passive backscatter communication network comprising multiple tags, multiple readers, and an eavesdropper with a practical non ...
Khan, Yasin, Dubey, Ankit, Orappanpara Soman, Sunish Kumar   +2 more
core   +1 more source

Secrecy Outage Probability for RSMA-based ISATNs with Imperfect Hardware

This paper researches the secrecy outage probabili-ty for the rate splitting multiple access-based integrated satellite-aerial-terrestrial networks. Specially, owing to some practical reasons, imperfect hardware is further analyzed for all the network ...
Wu, Min, Zhou, Feng, Nauman, Ali, Bilal, Muhammad, Guo, Kefeng, Li, Xingwang   +5 more
core   +2 more sources