Spectrum sharing (SS) and energy harvesting (EH) basically improve spectrum-and-energy
efficiencies required by modern communications systems. Nonetheless, most publications …

In this paper, we analyze the performance of a non-orthogonal multiple access (NOMA)
cognitive relay system, where a multi-antenna full-duplex cognitive transmitter employs …

Overlay mechanism offers secondary users (SUs) chances to access licensed spectrum of
primary users (PUs) to improve spectrum utilization efficiency. However, these chances …

Energy harvesting-aided non-orthogonal multiple access (NOMA) meets critical
requirements of modern wireless networks in terms of spectral efficiency, communication …

This paper proposes a jamming technique which employs a self-powered secondary
jammer to interfere a wire-tapper, who eavesdrops communications between a self-powered …

This paper recommends a simultaneous jamming‐and‐transmitting scheme for spectrum‐
sharing relaying networks with nonlinear energy scavenging. More specifically, spectrum …

In this paper, physical-layer security (PLS) of an underlay cognitive radio network (CRN)
operating over cascaded Rayleigh fading channels is examined. In this scenario, a …

This paper adopts a relay among available secondary relays and exploits non-selected
relays as jammers to maintain and secure legitimate secondary source-to-destination …

This work investigates the secrecy capability of energy harvesting based overlay cognitive
networks (EHOCNs). To this end, we assume that a message by a licensed transmitter is …

Physical-layer security (PLS) for an underlay cognitive radio network (CRN)-based
simultaneous wireless information and power transfer (SWIPT) over cascaded κ-µ fading …