Results 11 to 20 of about 465 (189)

Ergodic Secrecy Rate Analysis for LEO Satellite Downlink Networks

open access: yes, 2023
Satellite networks are recognized as an effective solution to ensure seamless connectivity worldwide, catering to a diverse range of applications. However, the broad coverage and broadcasting nature of satellite networks also expose them to security challenges. Despite these challenges, there is a lack of analytical understanding addressing the secrecy
Kim, Daeun, Lee, Namyoon
openaire   +3 more sources

Secrecy Rate Region Enhancement in Multiple Access Wiretap Channel

open access: yesJournal of Telecommunications and Information Technology, 2022
It is commonly known that physical layer security is achieved with a trade-off in terms of the achievable rate. Hence, security constraints generate rate losses in wiretap channels.
Shahid Mehraj Shah
doaj   +2 more sources

On the Ergodic Secrecy Rate of Massive MIMO Transmission with Partial Legitimate User CSI

open access: yes2019 IEEE Pacific Rim Conference on Communications, Computers and Signal Processing (PACRIM), 2019
In this paper, we consider the downlink transmission over a single-cell massive multiple-input-multiple-output (MIMO) system in the presence of multiple single-antenna eavesdroppers (massive MIMOME). We concentrate on the practical scenario where partial channel state information (CSI) of legitimate users and no CSI of eavesdroppers are available at ...
Bao T., Yang H.-C., Hasna , Mazen
openaire   +3 more sources

Physical Layer Security in Random NOMA-Enabled Heterogeneous Networks

open access: yesIEEE Open Journal of the Communications Society
The performance of physical layer secrecy approach in non-orthogonal multiple access (NOMA)-enabled heterogeneous networks (HetNets) is analyzed in this paper. A K-tier multi-cell HetNet is considered, comprising NOMA adopted in all tiers.
Elmira Shahraki   +2 more
doaj   +2 more sources

Transmitter selection for secrecy against colluding eavesdroppers with backhaul uncertainty

open access: yesIET Communications, 2023
Due to the exponential growth of interconnected devices and reduced cell coverage, beyond fifth‐generation networks will be dense. Thus, instead of wired backhaul, wireless backhaul will be cost‐effective and flexible.
Burhan Wafai, Ankit Dubey, Chinmoy Kundu
doaj   +2 more sources

Secrecy Balancing over Two-User MISO Interference Channels with Rician Fading [PDF]

open access: yesInternational Journal of Antennas and Propagation, 2013
This paper considers a 2-user multiple-input single-output (MISO) interference channel with confidential messages (IFC-CM), in which the Rician channel model is assumed.
Jiqing Ni   +5 more
doaj   +2 more sources

Effects of CSI Knowledge on Secrecy of Threshold-Selection Decode-and-Forward Relaying

open access: yesIEEE Access, 2017
This paper considers secrecy of a three node cooperative wireless system in the presence of a passive eavesdropper. The threshold-selection decode-and-forward relay is considered, which can decode the source message correctly only if a predefined signal ...
Chinmoy Kundu   +5 more
doaj   +2 more sources

Physical Layer Security Enhancement via IRS Based on PD-NOMA and Cooperative Jamming

open access: yesIEEE Access, 2023
Intelligence reconfigurable surfaces (IRS) have attracted attention due to their ability to create an intelligent and controllable wireless propagation environment for supporting an efficient, and secure design.
Afshin Souzani   +3 more
doaj   +1 more source

Interference Exploitation for Secure Communications: Error Rate and Secrecy Analysis [PDF]

open access: yes, 2020
Interference exploitation has recently been shown to provide significant security benefits in multiuser communication systems. In this technique, the known interference is designed to be constructive to the legitimate users and disruptive to the ...
Abdelhamid Salem   +3 more
core   +1 more source

RIS-Aided Physical Layer Security With Full-Duplex Jamming in Underlay D2D Networks

open access: yesIEEE Access, 2021
This paper investigates the physical layer security and data transmission for the underlay device-to-device (D2D) networks, and considers a combination of the reconfigurable intelligent surface (RIS) and full-duplex (FD) jamming receiver for the ...
Waqas Khalid   +4 more
doaj   +1 more source

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