In this paper, we consider the secure beamforming design for an underlay cognitive radio
multiple-input single-output broadcast channel in the presence of multiple passive …

In this paper, we investigate a tradeoff between the secrecy rate (SR) and energy efficiency
(EE) in an underlay cognitive radio network that consists of a cognitive base station (CBS), a …

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

In this article, we investigate optimal beamforming at a multiantenna primary base station
(PBS) and a multiantenna cognitive base station (CBS) for energy-efficient (EE) secure …

We consider physical-layer security in a novel MISO cooperative overlay cognitive radio
network (CRN) with a single eavesdropper. We aim to design an artificial noise (AN) aided …

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 work, we design a covert jamming scheme against an intelligent Eve towards physical
layer security in a cooperative cognitive radio networks. To protect the primary message …

In this paper, we study the secrecy precoding problem for a cognitive multiple-input-multiple-
output multiple-eavesdropper (MIMOME) wiretap system. The problem is studied with 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 …