Results 11 to 20 of about 82 (79)

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

ZF-SIC Based Individual Secrecy in SIMO Multiple Access Wiretap Channel

open access: yesIEEE Access, 2017
In this paper, a decoding method of joint zero-forcing and successive interference cancellation (ZF-SIC) is put forward to assist the study of the individual secrecy in the quasi-static Rayleigh fading single-input multiple-output multiple access wiretap
Kaiwei Jiang   +4 more
doaj   +1 more source

Individual secrecy of fading homogeneous multiple access wiretap channel with successive interference cancellation

open access: yesEURASIP Journal on Wireless Communications and Networking, 2017
We investigate individual secrecy performance in a K-user quasi-static Rayleigh fading homogeneous multiple access wiretap channel (MAC-WT), where a legitimate receiver employs successive interference cancellation (SIC) decoding.
Kaiwei Jiang   +4 more
doaj   +1 more source

SIC-Based Secrecy Performance in Uplink NOMA Multi-Eavesdropper Wiretap Channels

open access: yesIEEE Access, 2018
A new paradigm of uplink non-orthogonal multiple access along with multiple eavesdroppers to achieve secrecy transmission is studied in this paper.
Kaiwei Jiang   +4 more
doaj   +1 more source

Cooperative Secure Transmission in the Presence of Untrusted Relay

open access: yesInternational Journal of Distributed Sensor Networks, 2016
Considering a nonregenerative untrusted relay network, we investigate three different secure transmission strategies, for example, noncooperative strategy, conventional amplify-and-forward (AF) strategy, and cooperative jamming (CJ) strategy.
Dechuan Chen   +4 more
doaj   +1 more source

Physical Layer Security in Uplink NOMA Multi-Antenna Systems With Randomly Distributed Eavesdroppers

open access: yesIEEE Access, 2019
The physical layer security of uplink non-orthogonal multiple access (NOMA) is analyzed. A stochastic geometry approach is applied to analyze the coverage probability and effective secrecy throughput (EST) of the kth NOMA user, where a fixed or an ...
Gerardo Gomez   +4 more
doaj   +1 more source

Physical Layer Security in Cognitive Untrusted Relay Networks

open access: yesIEEE Access, 2018
In this paper, we consider the secure communications in a cognitive untrusted relay network, where the secondary source intends to communicate with a secondary destination through an untrusted relay in the presence of the direct source-destination link ...
Dechuan Chen   +4 more
doaj   +1 more source

Physical Layer Security in an Untrusted Energy Harvesting Relay Network

open access: yesIEEE Access, 2019
The security performance in an amplify-and-forward dual-hop untrusted relay network is considered. It is assumed that the source and multiple destinations are equipped with multiple antennas, and the information transmission is aided by a single-antenna ...
Hui Shi   +5 more
doaj   +1 more source

Plant Variety Registration in Transition: Opportunities for Innovation and Reform in The European Union Enregistrement des variétés végétales en transition : opportunités d’innovation et de réforme dans l’Union européenne Die Registrierung von Pflanzensorten im Wandel: Chancen für Innovation und Neugestaltung in der Europäischen Union

open access: yesEuroChoices, EarlyView.
Summary Modernising the European Union’s plant variety registration system is critical to enabling the development and adoption of sustainable, climate‐resilient varieties aligned with the EU Farm‐to‐Fork Strategy. However, the current system is outdated and under increasing pressure. While legislative reform is underway, key points of divergence among
Sergio Urioste Daza   +2 more
wiley   +1 more source

Relay-Assisted Mixed UAC–FSO System for Oceanic–Terrestrial IoT Networks: Secrecy Analysis and Rate Optimization

open access: yesIEEE Access
This paper examines the physical layer security (PLS) of a relay-assisted cross-medium system that combines underwater acoustic communication (UAC) and free-space optical (FSO) links for oceanic–terrestrial Internet of Things (IoT) networks ...
Dipti Ranjan Pattanayak   +5 more
doaj   +1 more source

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