We consider a cognitive radio (CR) network consisting of a secondary transmitter (ST), a
secondary destination (SD) and multiple secondary relays (SRs) in the presence of an …

This letter proposes several relay selection policies for secure communication in cognitive
decode-and-forward relay networks, where a pair of cognitive relays is opportunistically …

In this paper, the secrecy outage performance of an underlay cognitive decode-and-forward
relay network over independent but not necessarily identical distributed Nakagami-m fading …

In this study, the physical layer security for cognitive radio network (CRN) will be
investigated in which a secondary user transmitter (SU-Tx) sends confidential information to …

In cognitive radio networks, each cognitive transmission process typically requires two
phases: the spectrum sensing phase and data transmission phase. In this paper, we …

The benefits of cognitive radio networking (CRN) have been well recognized with the
emerging wireless applications in recent years. While many existing works assume that the …

This article investigates the physical layer security for a cooperative cognitive radio (CCR)
system with energy-harvesting (EH) technique, which consists of a cognitive source (CS) …

In this paper, we investigate beamforming design for cooperative secure transmission in
cognitive two-way relay networks, where the cognitive transmitter (CT) with multiple …

In this paper, we investigate joint relay selection and power allocation to maximize system
throughput with limited interference to licensed (primary) users in cognitive radio (CR) …

In this paper, we investigate the physical-layer security of cooperative communications
relying on multiple two-way relays using the decode-and-forward (DF) protocol in the …