In this letter, a underlay cognitive radio inspired non-orthogonal multiple access (CR-NOMA)
network assisted by the reconfigurable intelligent surface (RIS) technique is conceived to …

Reconfigurable intelligent surface (RIS) has emerged as a promising technology for
achieving high spectrum and energy efficiency in future wireless communication networks …

Reconfigurable intelligent surface (RIS) is an emerging next-generation technology that can
improve the energy efficiency using multiple low-power passive metasurfaces which reflect …

We propose a robust beamforming (BF) scheme for reconfigurable intelligent surface (RIS)
enhanced transmission to support heterogeneous services with diverse signal-to …

Reconfigurable intelligent surface (RIS) is an emerging technology to achieve energy-
efficient wireless communication. This technology has the potential of turning the wireless …

This paper addresses the beamforming and power allocation problem in the downlink multi-
input multi-output (MIMO) non-orthogonal multiple access (NOMA) based cognitive radio …

Cognitive radio (CR) and non-orthogonal multiple access (NOMA) have been deemed two
promising technologies due to their potential to achieve high spectral efficiency and massive …

The cognitive radio (CR) network is a promising network architecture that meets the
requirement of enhancing scarce radio spectrum utilization. Meanwhile, reconfigurable …

Considering reconfigurable intelligent surfaces (RISs), we study a multi-cluster multiple-
input-single-output (MISO) non-orthogonal multiple access (NOMA) downlink …

In this paper, intelligent reflecting surface (IRS) is introduced to enhance the network
performance of cognitive radio (CR) systems. Specifically, we investigate robust …