… At the same time, dedicated relays are also employed to facilitate cooperative NOMA …
NOMA-weak users. Later, Yang et al. [29] focused on the relay selection strategies in a co-NOMA …

… NOMA downlink transmission in an underlaying cognitive radio network. The worst-case
achievable rate for the NOMA… have the same transmission rate, we select the SU with the largest …

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. …

… the full use of limited spectrum resources. In this article, a nonorthogonal multiple access (NOMA)-based
hybrid spectrum access scheme is proposed for 6G-enabled cognitive IoT (CIoT…

… : 1) 10 users with the highest rates are selected as initial clus… , 2) 10 users with the lowest
rates are selected as initial cluster … 3) The initial cluster members are selected randomly and the …

… In this paper, the application of NOMA to multicast cognitive radio networks (termed as MCR-…
The performance of transmit antenna selection for NOMA assisted multiple-input multiple-…

… cognitive NOMA system with imperfect successive interference cancellation (SIC). The outage
probability of primary user and secondary user are … Moreover, the overlay cognitive NOMA …

… relay selection and power allocation (J-RS-PA) for NOMA-based multicast cognitive radio …
; while in the cooperation phase, the selected relay forwards the decoded symbols to their …

… -based network can serve multiple users on the same resource … NOMA (PD-NOMA), which
is the interest of this article, users … The BS has to select PTj, whose channel parameters (fp,gp, …

… user and security-required user are selected to perform … For cognitive relay NOMA networks,
we propose a novel … primary user can be strictly maintained, and the successful of SIC at the …