This paper considers an underlay relaying network where a cognitive relay performs decode-
and-forward operation to aid communication between a cognitive source-destination pair …

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 …

In this paper, we investigate the physical layer security of a hybrid cognitive relay network
using an energy harvesting relay in presence of an eavesdropper. In the hybrid scheme, a …

We propose a system model for energy harvesting-based underlay relaying networks with
transmit antenna selection and jamming where a multi-antenna unlicensed relay performs …

In this paper, we examine the physical (PHY) layer security in terms of secrecy outage of an
energy harvesting (EH) relay based underlay cognitive radio network (CRN) in the presence …

This paper investigates the physical layer security of an underlay cognitive radio network
with relay selection scheme under threats of an eavesdropper. We consider a set of …

An unlicensed relay is located between an unlicensed sender and an unlicensed recipient
for securing the sender's message against a wire-tapper in underlay cognitive networks …

According to the current challenges of spectrum scarcity, poor wireless communication
quality, insufficient energy supply and physical layer security, this paper proposes a secure …

This work considers an energy harvesting (EH) based two‐hop relay assisted cognitive
radio system that consists of a secondary transmitter, a relay node and a cooperative …

Physical-layer security (PLS) is examined in this paper for an underlay cognitive radio
network (CRN). Two secondary users (SUs) interact through a relay that is equipped with …