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 letter, we consider a single-input multiple-output cognitive wiretap system over
generalized-K channels, where the eavesdropper overhears the transmission from the …

We investigate the optimal physical-layer secure transmission with artificial noise in the
wiretap channel with N antennas at the transmitter, a single antenna at the receiver, and M …

In this paper, secure communication aided by a multiantenna cooperative jammer is
investigated. Under very practical but adverse assumptions, ie, no instantaneous jammer …

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 …

The wiretap channel model in a wireless scenario is analyzed where there is a transmitter,
multiple legitimate receivers, non-colluding and colluding eavesdroppers; each of them is …

We study the physical-layer security of multi-hop secondary network under spectrum sharing
constraint caused by the primary, which consists of many simultaneously independent direct …

In this paper, we investigate the physical-layer security of a secure communication in single-
input multiple-output (SIMO) cognitive radio networks (CRNs) in the presence of two …

We study secure transmission considering the practical scenario in which only outdated
knowledge of the legitimate receiver's channel and statistical knowledge of the …

In this paper, we investigate physical-layer security performance of the cooperative vehicular
relaying networks, wherein the communication from a source vehicle to the destination …