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 …

This paper selects an unlicensed relay among available self‐powered relays to not only
remain but also secure information transmission from an unlicensed source to an unlicensed …

This paper exploits a self‐powered secondary relay to not only maintain but also secure
communications between a secondary source and a secondary destination in cognitive …

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 …

This study suggests an energy‐scavenging capable unlicensed relay not only to retain
communications between an unlicensed sender‐recipient pair in underlay cognitive …

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 …

Relay selection is proposed in this paper as an efficient solution to secure information
transmission of secondary users against eavesdroppers in energy harvesting cognitive …

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 security and reliability of information transmission within an
underlay wiretap energy harvesting cognitive two-way relay network. In the network, energy …

In this paper, we study the secure communication of cognitive energy harvesting relay
networks when there exist multiple eavesdroppers who can overhear the message of the …