The security energy efficiency (SEE) is investigated in a two way-full duplex (TW-FD) relay
assisted cognitive radio non-orthogonal multiple access (CR-NOMA) networks. In order to …

In order to improve the spectrum efficiency and secrecy energy efficiency, in this paper, we
propose a non-orthogonal multiple access (NOMA)-based secure scheme for cognitive radio …

Cognitive radio (CR) and non-orthogonal multiple access (NOMA) have been deemed two
promising technologies due to their potential to achieve a high spectral efficiency and …

Cognitive radio (CR) and non-orthogonal multiple access (NOMA) are two promising
technologies in the next generation wireless communication systems. The security of a …

In this paper, we propose a security-aware spectrum sharing scheme for wireless-powered
cognitive radio networks (CRNs) with non-orthogonal multiple access (NOMA). In this …

With the development of the Internet of Things (IoT), more and more devices are connected
in edge-cloud environment, and spectrum scarcity has become a major bottleneck for the …

This paper investigates the throughput of a non-orthogonal multiple access (NOMA)-based
cognitive radio (CR) system with multiple unmanned aerial vehicle (UAV)-assisted relays …

Due to the shortcomings of the standard bat algorithm (BA) for multi-parameter optimization,
an improved bat algorithm is proposed. The benchmark function test shows that the …

Energy Efficiency (EE) is a significant problem for Cognitive Radio (CR) network. Recently,
more interest has focused on EE optimization problem in wireless-powered communication …

In this paper, the security-aware robust resource allocation in energy harvesting cognitive
radio networks is considered with cooperation between two transmitters while there are …