This article studies the interweave cognitive network with non-orthogonal multiple access
(NOMA) principle under the appearance of one eavesdropper. The best relay selection …

By the integration of cooperative cognitive radio (CR) and nonorthogonal multiple access
(NOMA), cooperative CR NOMA networks can improve the spectrum efficiency of wireless …

This paper presents the optimal physical-layer security scheme of both primary user (PU)
and secondary user (SU) in the underlay multiple-input multiple-output cognitive-radio …

The Internet-of-Things (IoT) has greatly facilitated our daily lives. Nevertheless, how to
achieve higher spectral efficiency, large-scale device access, and lower latency for the next …

This paper investigates the secrecy outage performance of Multiple Input Multiple Output
(MIMO) secondary nodes for underlay Cognitive Radio Network (CRN) over α–μ fading …

This letter investigates secrecy performance for cognitive transmissions, where a secondary
user (SU) shares same spectrum with a primary user (PU) simultaneously ensuring the …

In this paper, we consider a cooperative multi-hop secured transmission protocol to underlay
cognitive radio networks. In the proposed protocol, a secondary source attempts to transmit …

This paper studies the impact of the eavesdropping attacks on secure multihop transmission
in cognitive radio networks. When secondary users transmit confidential information, the …

This work studies the physical layer security performance for Multiple Input Multiple Output
(MIMO) secondary nodes. The proposed model is assumed to operate in underlay Cognitive …

To deal with the problem of spectrum scarcity in the Internet of Things (IoT), cognitive radio
technology is introduced into IoT, namely, cognitive IoT. This paper investigates the secrecy …