This article proposes a novel non-orthogonal multiple access (NOMA) assisted cooperative
spectrum-sharing network, in which one of the full-duplex (FD) secondary transmitters (STs)
is chosen among many for forwarding the primary transmitter's and its own information to
primary receiver and secondary receivers, respectively, using NOMA technique. To stimulate
the ST to conduct cooperative transmission and sustain its operations, the simultaneous
wireless information and power transfer (SWIPT) technique is utilized by the ST to harvest …

In this paper, we analyze the performance of a non-orthogonal multiple access (NOMA)
cognitive relay system, where a multi-antenna full-duplex cognitive transmitter employs
NOMA concept to assist the transmission from a wireless-powered primary transmitter to its
corresponding receiver, while simultaneously communicating with a cognitive receiver. A
practical non-linear energy harvesting (EH) model, which taking into account harvester's
sensitivity and saturation effects is considered. We propose an optimum beamforming …