We look into adopting improper Gaussian signaling (IGS) in order to enhance the secrecy
performance of an underlay cognitive radio network since in interference-limited networks …

In this paper, we investigate the secrecy outage performance of maximal ratio combining
(MRC) in cognitive radio networks (CRNs) over Rayleigh fading channels. In a single input …

In this paper, we investigate secrecy capacity of a cognitive radio network based on
stochastic geometry distributions. We consider the Poisson process of both the secondary …

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, the secure communication of a cognitive radio network (CRN) over Nakagami-
m fading channel is investigated. An underlay protocol is used in the considered network …

In this study, the authors investigate the physical‐layer security in a cognitive radio network
where both the secondary user (SU) and the primary user (PU) are facing security threats …

We consider a cooperation scenario between primary users and untrusted secondary users
in cognitive radio networks. The secondary users are willing to help the primary users to …

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 …

In contrast with the traditional cryptography, physical layer security has attracted the
attention of many researchers having aim at reinforcing the security of communication …

Cognitive heterogeneous cellular networks (CHCNs) are emerging as a promising approach
to next-generation wireless communications owing to their seamless coverage and high …