Results 1 to 10 of about 1,643 (150)

Rate Adaption for Secure HARQ-CC System with Multiple Eavesdroppers [PDF]

open access: yesEntropy, 2020
In this paper, we studied the secure transmission of a hybrid automatic repeat request with chase combining (HARQ-CC) system, under the existence of multiple eavesdroppers and limited latency.
Yue Wu   +4 more
doaj   +2 more sources

Secure Transmission for Simultaneous Wireless Information and Power Transfer in AF Untrusted Relay Networks [PDF]

open access: yesSensors, 2018
This paper investigates secure communications of energy harvesting untrusted relay networks, where the destination assists jamming signal to prevent the untrusted relay from eavesdropping and to improve the forwarding ability of the energy constrained ...
Hui Shi   +4 more
doaj   +2 more sources

Jamming-Aided Secrecy Performance in Secure Uplink NOMA System

open access: yesIEEE Access, 2020
A novel secrecy scenario of uplink non-orthogonal multiple access (NOMA) along with cooperative jammer(s) to improve secrecy performance is studied in this work.
Kaiwei Jiang, Weihua Zhou, Lingjie Sun
doaj   +2 more sources

Physical Layer Security Analysis of Multi-Hop Hybrid RF/FSO System in Presence of Multiple Eavesdroppers

open access: yesIEEE Photonics Journal, 2022
In this paper, the physical layer security (PLS) analysis for a decode-and-forward (DF) protocol based multi-hop hybrid radio frequency (RF)/ free space optics (FSO) is presented.
Dipti R. Pattanayak   +4 more
doaj   +2 more sources

Security-Reliability Analysis in CR-NOMA IoT Network Under I/Q Imbalance

open access: yesIEEE Access, 2023
This paper presents a controllable analysis framework for evaluating the reliability and security of underlay cognitive radio networks (CRs) relying on non-orthogonal multiple access (NOMA).
Hung Nguyen   +5 more
doaj   +2 more sources

Physical Layer Security in NOMA-Enabled Cognitive Radio Networks With Outdated Channel State Information

open access: yesIEEE Access, 2020
In this article, we investigate physical layer security (PLS) in non-orthogonal multiple access-enabled (NOMA-enabled) underlay cognitive radio networks (CRNs) with outdated channel state information (CSI).
Yong Chen   +3 more
doaj   +2 more sources

On the performance of physical layer security in virtual full-duplex non-orthogonal multiple access system

open access: yesEURASIP Journal on Wireless Communications and Networking, 2021
This paper investigates physical layer security analysis of cooperative non-orthogonal multiple access (NOMA) communication system. A virtual full-duplex (VFD) relaying scheme with an untrusted amplify-and-forward (AF) half-duplex (HD) relay and a ...
Weidong Guo, Yuxi Liu
doaj   +1 more source

Physical layer security in cognitive NOMA sensor networks with full-duplex technique

open access: yesInternational Journal of Distributed Sensor Networks, 2021
This article studies the physical layer security in a downlink full-duplex cognitive non-orthogonal multiple access sensor networks (FD-C-NOMA). Compared with the existing works, this article proposes a FD-C-NOMA transmission scheme with a primary user ...
Zhihui Shang   +4 more
doaj   +1 more source

Secure Transmission for Energy Efficient Parallel Mixed FSO/RF System in Presence of Independent Eavesdroppers

open access: yesIEEE Photonics Journal, 2022
In this paper, the physical layer security (PLS) challenges for a decode and forward (DF) based dual hop mixed free space optical (FSO) / radio frequency (RF) communication system in the presence of multiple eavesdroppers has been investigated.
Dipti R. Pattanayak   +5 more
doaj   +1 more source

Security Improvement With QoS Provisioning Using Service Priority and Power Allocation for NOMA-IoT Networks

open access: yesIEEE Access, 2021
Non-orthogonal multiple access (NOMA) has gained attention as a promising multiple access scheme for the Internet of Things (IoT). A typical setting of user ordering in NOMA networks with user priority difference allows a service priority for solely low ...
Waqas Khalid, Heejung Yu
doaj   +1 more source

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