Traditional spectrum allocation policies may result in temporarily unused radio spectrum.
Cognitive radio (CR) has emerged as a promising technology to exploit the radio spectrum …

In this paper, we consider a multiple-input-multiple-output (MIMO) system consisting of one
source, one destination, and one eavesdropper, where each node is equipped with an …

Considering simultaneous wireless information and power transfer (SWIPT), we investigate
cooperative-jamming (CJ) aided robust secure transmission design in multiple-input-single …

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 …

In a cognitive radio (CR) network, the transmitting signal of a secondary user (SU) is
traditionally considered to be harmful for the primary user (PU), since it decreases the …

In this paper, we investigate the secondary network physical layer security under the outage
constraint of the primary user (PU) receiver and interference from the PU transmitter to the …

This paper studies robust resource-allocation algorithm design for a multiuser multiple-input-
single-output (MISO) cognitive radio (CR) downlink communication network. We focus on a …

In this paper, we proposed a symbiotic approach for a secure primary network by allowing
the secondary users to send the jamming noise to degrade the wiretap ability of the …

Security is a critical issue in cognitive radio (CR) relay networks. Most previous work
concentrates on maximizing secrecy capacity (SC) as a criterion to guarantee the security …

Security and privacy have become increasingly significant concerns in wireless
communication networks, due to the open nature of the wireless medium which makes the …