In this paper, we study a cooperative non-orthogonal multiple access (NOMA) system
underlying cognitive networks which adapt user relaying and selection combining. The …

In this paper, we study the application of the non orthogonal multiple access (NOMA) and
orthogonal multiple access (OMA) scheme to cooperative cognitive radio network. We …

Recently, Non-orthogonal multiple access (NOMA) has been focused for the next generation
multiple access, which has more spectral efficiency under the limited spectrum bandwidth …

In this letter, a decode-and-forward cooperative underlay cognitive radio (CR) non-
orthogonal multiple access (NOMA) network is studied. Exact closed-form expressions for …

This paper analyze a new cooperative hybrid underlay–overlay cognitive radio non-
orthogonal multiple access (CHCR-NOMA) system, where a secondary source and a …

This paper studies the application of non-orthogonal multiple access (NOMA) technology
and relay selection technology in cognitive radio (CR) networks. A downlink cooperative …

This paper proposes a cooperative uplink–downlink non orthogonal multiple access
(NOMA) in an overlay cognitive radio network (CR). We examine the impact of imperfect …

In the existing underlay cognitive radio literature, the outage performance of the secondary
network is severely degraded due to the interference from the primary network and the …

In this paper, we consider a non-orthogonal multiple access (NOMA) based underlay
cognitive radio (CR) system consisting of a source, two destinations, and a relay in the …

In non‐orthogonal multiple access (NOMA) systems, it may not be advisable to send the
superimposed signal of all users to individual users with retransmission requirements during …