This paper investigates physical layer security of cooperative NOMA in a severe scenario
where there is no direct link from the source to far destination while the direct link between …

Three relay selection techniques, aiming at achieving secure non-orthogonal multiple
access in cooperative energy-harvesting (EH) communications, are proposed and …

We investigate the secrecy transmission of uplink non-orthogonal multiple access (NOMA)
with the aid of energy harvesting (EH) jammers. During each time frame, communication is …

In this paper, we consider a downlink non-orthogonal multiple access system, in which base
station emits secret messages to two legitimate users in the presence of multiple …

The rapid growth of the number of wireless devices and their functional diversity in the next-
generation networks (5G–6G) leads to many challenging problems, eg, mobility …

Due to the wide application of fifth generation communication, wireless sensor networks
have become an indispensable part in our daily life. In this paper, we analyze physical layer …

Non-orthogonal multiple access (NOMA) and wireless energy harvesting are two promising
technologies for improving spectral efficiency and energy efficiency, respectively. In this …

Internet of Things (IOT) is a promising technology has been proliferated in modern
communication systems. Besides, most of the IOT devices are energy constrained and need …

In this paper, a secure uplink non-orthogonal multiple access (NOMA) internet of things (IoT)
system using an energy harvesting unmanned aerial vehicle (UAV) is studied. The …

In this paper, a secure uplink non-orthogonal multiple access (NOMA) internet of things (IoT)
system using an energy harvesting (EH) unmanned aerial vehicle (UAV) is studied. The …