In this paper, we investigate the physical-layer security of a multi-user multi-eavesdropper
cognitive radio system, which is composed of multiple cognitive users (CUs) transmitting to a …

In this paper, we consider a cognitive radio network that consists of one cognitive base
station (CBS) and multiple cognitive users (CUs) in the presence of multiple eavesdroppers …

This paper investigates the physical-layer security (PLS) of a single-input-multiple-output
(SIMO) underlay cognitive radio network (CRN) over cascaded-fading channels. A …

In this study, the physical layer security for cognitive radio network (CRN) will be
investigated in which a secondary user transmitter (SU-Tx) sends confidential information to …

We consider a cognitive radio network where multiple secondary users (SUs) coexist with a
primary user (PU). There exist multiple eavesdroppers (EAVs) who attempt to overhear the …

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 studies the achievable rates of the multi-antenna or multiple-input multiple-output
(MIMO) secrecy channel with multiple single-/multi-antenna eavesdroppers. By assuming …

Cognitive radio has emerged as an essential recipe for future high-capacity, high-coverage
multitier hierarchical networks. Securing data transmission in these networks is of the utmost …

In this paper, we investigate the physical layer security for a cognitive multiuser network
which is composed of multiple cognitive sources, a cognitive destination and an …

In this paper, we address the physical-layer security issue of a secondary user (SU) in a
spectrum-sharing cognitive radio network (CRN) from an information-theoretic perspective …