Wireless communication systems are vulnerable to eavesdropping attack in which the
attacker overhear the transmitted data in the network. Hence, the physical-layer security is of …

In this paper, we consider a multi-hop decode-and-forward (DF) relaying transmission in
underlay cognitive radio networks. Considering the presence of an eavesdropper that …

In this paper, the physical layer security in cognitive radio networks (CRNs) is investigated.
We consider an underlay relay assisted CRN consisting of multiple secondary sources …

In this paper, we study the physical layer security for underlay cognitive radio network in the
presence of an eavesdropper that tries to intercept the secondary transmission. Specifically …

In this paper, physical-layer security (PLS) for an underlay cognitive radio network (CRN)
over cascaded Rayleigh fading channels is studied. The underlying cognitive radio system …

We investigate the secrecy outage performance of maximal ratio combining (MRC) in
cognitive radio networks over Rayleigh fading channels. In a single-input multiple-output …

In Rician-fading scenario, cognitive radio networks (CRNs) with a source (S) in a secondary
system transmitting its confidential information to a legitimate destination (D) in the presence …

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 …

The authors study the secure transmission design in random cognitive radio networks where
the primary users, the secondary users and the eavesdroppers are randomly distributed …

This paper studies the physical layer security in cognitive relay network (CRN) with multiple
antennas in the presence of multiple eavesdroppers. Under spectrum sharing scenario and …