A novel semantics-empowered two-user uplink non-orthogonal multiple access (NOMA)
framework is proposed for resource efficiency enhancement. More particularly, a secondary …

In this paper, we investigate the effectiveness of an overlay cognitive radio (OCR) coupled
with non-orthogonal multiple access (NOMA) system using a full-duplex (FD) cooperative …

The non-orthogonal multiple access (NOMA) schemes, where the users are allowed to
share the same time-frequency resource, have recently received a major interest to meet the …

Non-orthogonal multiple access (NOMA) is a promising multiple access technique for the
fifth generation (5G) wireless communications. In order to enhance the performance gains of …

Physical layer network coding (PNC) has been proposed for information exchange between
a pair of users assisted by a relay. However, the spectral efficiency of PNC reduces when …

This paper studies a two-user cooperative non-orthogonal multiple access network with a
novel cooperation scheme, where the source communicates with the near user directly or …

In recent years, non-orthogonal multiple access (NOMA) has been considered as a
promising technique in 5G systems. The users in a NOMA system are cooperative and …

The demands for high spectral efficiency and massive connections led the researchers to
investigate new multiple access techniques for the future wireless networks. Non-Orthogonal …

This paper investigates the power allocation problem of full-duplex cooperative non-
orthogonal multiple access (FD-CNOMA) systems, in which the strong users relay data for …

In conventional cooperative non-orthogonal multiple access (NOMA) networks, spectral
efficiency loss occurs due to a half-duplex constraint. To address this issue, we propose an …