Physical layer security (PLS) has emerged as a new concept and powerful alternative that
can complement and may even replace encryption-based approaches, which entail many …

Cognitive radio (CR) and non-orthogonal multiple access (NOMA) have been deemed two
promising technologies due to their potential to achieve high spectral efficiency and massive …

A multiple-input single-output cognitive radio downlink network is studied with simultaneous
wireless information and power transfer. In this network, a secondary user coexists with …

The spectrum efficiency (SE) and security of the secondary users (SUs) in the cognitive radio
networks (CRNs) have become two main issues due to the limitation interference to the …

In this paper, an intelligent reflecting surface (IRS) assisted spectrum sharing underlay
cognitive radio (CR) wiretap channel (WTC) is studied, and we aim at enhancing the secrecy …

This paper develops a tractable analysis framework to evaluate the reliability and security
performance of cooperative non-orthogonal multiple access (co-NOMA) in cognitive …

In this paper, physical layer security in multi-antenna small-cell networks is investigated,
where the multi-antenna base stations (BSs), cellular users, and eavesdroppers are all …

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 …

In this paper, we study physical layer security in an underlay cognitive radio (CR) network.
We consider the problem of secure communication between a secondary transmitter …

This paper investigates the physical-layer security of a multiuser peer-to-peer (MUP2P) relay
network for amplify-and-forward (AF) protocol, where a secure user and other unclassified …