Cognitive radio (CR) is a candidate for opportunistic spectrum implementation in wireless
communications, allowing secondary users (SUs) to share the spectrum with primary users …

In this paper, we propose a novel robust resource allocation algorithm for downlink non-
orthogonal multiple access (NOMA) cognitive radio networks with the underlay spectrum …

In this paper, we investigate a downlink outage-constrained robust resource allocation
algorithm for achieving the robust transmission in power-domain non-orthogonal multiple …

Non-orthogonal multiple access (NOMA) is one of the promising techniques for spectrum
efficiency in wireless networks. In this paper, we consider an uplink NOMA cognitive system …

Resource allocation (RA) is a key technique to guarantee the quality of service of users and
maximize the system capacity in cognitive nonorthogonal multiple access (NOMA) networks …

Cognitive radio and backscatter communication (BackCom) have been viewed as two
promising technologies for the future green Internet of Things (IoT). The combination of …

The integration of non-orthogonal multiple access (NOMA) technology and cognitive radio
networks (CRNs) promises to enhance the spectrum utilization efficiency of 5G and beyond …

Recently, the combination of cognitive radio networks with the nonorthogonal multiple
access (NOMA) approach has emerged as a viable option for not only improving spectrum …

In this paper, a power optimization scheme based on user's reputation in non-orthogonal
multiple access (NOMA) Cognitive Radio Networks (CRN) is proposed. By combining NOMA …

Energy Efficiency (EE) is a significant problem for Cognitive Radio (CR) network. Recently,
more interest has focused on EE optimization problem in wireless-powered communication …