In this paper, we address the issue of optimal transmitter design to achieve physical layer
security for a multiple-input single-output (MISO) cognitive radio network (CRN), in which a …

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 …

This paper studies a cognitive radio network (CRN), in which a multiple-input single-output
(MISO) secondary transmitter (SU-Tx) aims to send confidential messages to its receiver (SU …

This paper considers the precoder design for multiantenna secure cognitive radio networks.
We use finite-alphabet inputs as the signaling and exploit statistical channel state …

In this paper, we study the secure beamforming design for a cognitive radio network (CRN),
where a primary transmitter-receiver pair coexists with an untrusted secondary transmitter …

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 …

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 …

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 consider multiple-input single-output multi-eavesdropper cognitive radio
networks (MISOME-CRNs), where a secondary user (SU) aims to transmit confidential …

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 …