Non‐orthogonal multiple access (NOMA) along with cooperative communications have
been recognised as promising candidates for the fifth generation (5G) wireless networks and …

In conventional cognitive radio (CR), the users in secondary network (SN) can only access
the idle spectrum when users in primary network (PN) are absent. This novel strategy …

Amidst the rapid development of the fifth generation (5G) networks, Internet of Things (IoT) is
considered as one of the most important part of 5G next generation networks as it can …

In this paper, we consider a two-way network-coded relaying system consisting of two
Primary Users (PUs) communicating via the relay node as the primary network with licensed …

In this paper, a new network model is proposed to improve the performance of the
secondary channel in cognitive radio networks (CRNs) based ambient backscatter …

We consider a cooperative non-orthogonal multiple access system with radio frequency
energy harvesting, in which a user with good channel harvests energy from its received …

In cognitive radio networks (CRNs), the performance of the primary users (PUs) may suffer
adverse effects from the secondary users (SUs) if the spectrum of PUs is haphazardly …

In this paper, an energy harvesting enabled cooperative non-orthogonal multiple access
(NOMA) system for a multi-cell network is investigated. Particularly, during the direct …

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 …

Non‐orthogonal multiple access (NOMA), which is an effective solution to improve spectral
efficiency, has been considered as an emerging candidate for the fifth generation multiple …