This paper investigates secure cooperative communications in untrusted relay networks,
where a source coordinately communicates with multiple near users and a far user, and the …

Non-orthogonal multiple access (NOMA) has been proposed as a promising technology that
is capable of improving the spectral efficiency of fifth-generation wireless networks and …

The massive connectivity requirement and security issues have become major factors
restricting the further development of the Internet of Things. Nonorthogonal multiple access …

In this paper, we propose a virtual full-duplex cooperative non-orthogonal multiple access
(NOMA) framework for a downlink two-hop network assisted by multiple half-duplex decode …

This paper studies the secrecy performance of collaborative non-orthogonal multiple access
(NOMA) systems over κ–μ shadowed distribution with in-phase and quadrature-phase …

Non-orthogonal multiple access (NOMA) has been envisioned as a promising multiple
access technique to improve spectral efficiency and provide massive connectivity in future …

In this article, we study the physical-layer security (PHY-security) improvement method for a
downlink nonorthogonal multiple access (NOMA) system in the presence of an active …

The reconfigurable intelligent surface (RIS) aided non-orthogonal multiple access (NOMA)
network is applied to improve spectral efficiency and energy efficiency of wireless systems …

In this paper, we study a particle swarm optimization (PSO)-based power allocation scheme
for physical-layer security under downlink non-orthogonal multiple-access (NOMA) with …

This paper studies the physical-layer security for a non-orthogonal multiple access (NOMA)
based unmanned aerial vehicle (UAV) assisted hybrid satellite-terrestrial simultaneous …