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 …

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 …

This paper proposes a system EE (energy efficiency) optimization algorithm based on OPS
(On‐off Power Splitting) strategy for SWIPT (Simultaneous Wireless Information and Power …

The combination of cognitive radio and non-orthogonal multiple access (NOMA) has
tremendous potential to achieve high spectral efficiency in the IoT era. In this paper, we …

Cognitive radio and non-orthogonal multiple access are promising for alleviating the severe
spectral scarcity problem encountered by the next generation wireless communication …

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 …

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 work investigates the energy efficiency (EE) and the spectral efficiency (SE)
performance of multi-hop full duplex cognitive relay networks (MH-FDCRNs) operating in the …

This paper studies the problem of joint relay selection and power allocation (J-RS-PA) for
non-orthogonal multiple-access (NOMA)-based multicast cognitive radio networks with …