This paper has investigated a downlink non-orthogonal multiple access (NOMA) cooperative
scheme with user-assisted relaying, where near users are viewed as decode-and-forward …

This letter merges the advantages of non-orthogonal-multiple-access (NOMA) and multi-
antenna communication in a full-duplex (FD) uplink cooperative system, where two cellular …

In this paper, we study the performance improvement methods for a cell-edge user of two-
user non-orthogonal multiple access (NOMA) systems in downlink scenarios. To this end …

This letter presents a new downlink cooperative non-orthogonal multiple access (NOMA)
transmission scheme to serve three users within only two time slots. The scheme involves a …

Non-orthogonal multiple access (NOMA) scheme is considered as a promising technology
for 5G networks due to its ability to increase the spectral efficiency. In this paper, by …

Non‐orthogonal multiple access (NOMA), an emerging technology to improve system
capacity and spectrum efficiency, has attracted significant attention. In this study, the authors …

In this letter, we study a power-domain non-orthogonal multiple access (NOMA) system in
which a base station (BS) superimposes the transmit signals to the users. To enhance …

This paper studies the coordinated direct and relay transmission (CDRT) in the non-
orthogonal multiple access network, which consists of a base station (BS), a cell-center user …

User relaying in cooperative non-orthogonal multiple access (C-NOMA) system is able to
enhance reliability. However, for user operates in half-duplex (HD) mode, additional …

A coordinated direct and relay transmission is proposed using uplink non-orthogonal
multiple access (UP-NOMA). A two-user UP-NOMA scenario is considered, where a cell …