In this article, we investigate the performance of spectrum sharing inunderlay cognitive radio
(CR)-inspired nonorthogonal multiple access (NOMA) systems, at which a primary …

Non-orthogonal multiple access (NOMA)-based cognitive radio (CR) networks have recently
emerged as a promising solution to enhance the spectral efficiency and massive …

In this paper, we study a power domain non-orthogonal multiple access (NOMA) scheme for
cognitive cooperative radio networks (CCRNs). In the proposed scheme, a secondary …

Non-orthogonal multiple access (NOMA) and cognitive radio (CR) are envisioned as
promising solutions to achieve high spectral efficiency for future wireless networks. This …

In this paper, we investigate a cognitive non-orthogonal multiple access (NOMA) network
scenario by adopting an amplify-and-forward (AF) relaying method. The end-to-end outage …

Cooperative non-orthogonal multiple access (NOMA) system employs user relaying to
enhance performance. Although full-duplex (FD) user relaying scheme does not incur …

This paper investigates the performance of an underlay cognitive hybrid satellite-terrestrial
network comprising a primary satellite source with its multiple terrestrial primary receivers …

This paper proposes a cooperative nonorthogonal multiple access (CNOMA) scheme in a
full-duplex (FD) relaying cognitive radio network (CRN), where a primary user (PU) …

Two emerging technologies toward 5G wireless networks, namely non-orthogonal multiple
access (NOMA) and cognitive radio (CR), will provide more efficient utilization of wireless …

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 …