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 joint relay and antenna selection strategy for amplify-and-
forward (AF) cognitive radio-inspired non-orthogonal multiple access (CR-NOMA) systems …

In this paper, a downlink scenario of a non-orthogonal multiple access (NOMA) scheme with
power constraint via spectrum sensing is considered. Such network provides improved …

A novel non-orthogonal multiple access (NOMA) scheme is proposed to improve the
throughput and the outage probability of the cognitive radio (CR) inspired system which has …

This paper investigates the outage performance of secondary users (SUs) in underlay
cognitive radio–based nonorthogonal multiple access (CR‐NOMA) networks. We consider …

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, the power allocation of Non-orthogonal multiple access (NOMA) for secondary
users in underlay cognitive radio is studied. In underlay cognitive radio networks, the …

Cognitive radio non-orthogonal multiple access (CR-NOMA) technique can enhance the
perception of whole resources by combining cognitive radio and non-orthogonal multiple …

This paper outlined a Non-Orthogonal Multiple Access (NOMA) grouping transmission
scheme for cognitive radio networks. To address the problems of small channel gain …

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 …