In this paper, we consider a novel cooperative underlay cognitive radio network based on
non-orthogonal multiple access (CR-NOMA) with adaptive relay selection and power …

Although underlay spectrum sharing has been shown as a promising technique to promote
the spectrum utilization in cognitive radio networks (CRNs), it may suffer bad secondary …

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 …

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 …

This paper investigates the impact of partial relay selection scheme (PRSS) on cooperative
underlay cognitive radio (CR) non-orthogonal multiple access (NOMA) networks. Decode …

In this paper, we investigate a relay-assisted cooperative spectrum sharing for the
considered non-orthogonal multiple access (NOMA) scheme in cognitive radio networks …

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 …

The conflation of cognitive radio (CR) and non-orthogonal multiple access (NOMA) concepts
is a promising approach to fulfill the massive connectivity goals of future networks given the …

This paper proposes a novel non-orthogonal multiple access (NOMA)-based cooperative
transmission scheme for a spectrum-sharing cognitive radio network (CRN), whereby a …

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 …