Due to the unprecedented growth of high speed multimedia services and diversified
applications initiated from the massive connectivity of IoT devices, 5G and beyond 5G (B5G) …

Physical layer security (PLS) has been extensively explored as an alternative to
conventional cryptographic schemes for securing wireless links. Many studies have shown …

In this paper, we consider an underlay multiple-input-multiple-output (MIMO) cognitive radio
network (CRN) including a pair of primary nodes, a couple of secondary nodes, and an …

This paper considers a multiple-input-multiple-output (MIMO) cognitive wiretap system over
Nakagami-m channels with generalized selection combining (GSC), where confidential …

This paper investigates the physical layer security problem of cognitive decode-and-forward
relay networks over Nakagami-m fading channels. We consider the relaying communication …

This paper considers a secure nonorthogonal multiple access system, where confidential
messages are transmitted from a base station to multiple legitimate destinations and …

In this paper, the secrecy outage performance of an underlay cognitive decode-and-forward
relay network over independent but not necessarily identical distributed Nakagami-m fading …

We study the physical-layer security of a cognitive radio system in the face of multiple
eavesdroppers (EDs), which is composed of a secondary base station (SBS), multiple …

We consider an underlay cognitive radio system, in which a source in a secondary system
transmits information to a full-duplex (FD) wireless-powered destination node in the …

When the beam waist at the receiver is significantly larger than the receiver size, free-space
optical (FSO) links may be vulnerable to some optical tapping risks at the physical layer. In …