For the last few decades, wireless communication has been facing a technological
revolution. High data rate and continuous connectivity are the necessities because the …

The integration of cognitive radio (CR) technology and non-orthogonal multiple access
(NOMA) techniques, referred to as CR-based NOMA systems, has been recently configured …

Increasing number of devices connected to the networks, applications and demands of new
generation wireless communications cause very high energy consumption resulting in large …

In this paper, we consider an energy efficient resource allocation technique for a hybrid time
division multiple access (TDMA)-non-orthogonal multiple access (NOMA) system. In such a …

The power domain non-orthogonal multiple access (PD-NOMA) performs reasonably well
under perfect successive interference cancellation (SIC) conditions. However, under …

The interplay between the non-orthogonal multiple access (NOMA) and the opportunistic
cognitive radio (CR)-based orthogonal frequency multiple access (OFDMA) has been …

Intelligent reflecting surface (IRS) has been recently integrated with emerging
communication technologies to meet the demanding requirements of communication …

The Internet of Things (IoT) is revolutionizing technology in a wide variety of areas, from
smart healthcare to smart transportation. Due to the increasing trend in the number of IoT …

Energy efficiency (EE) and spectral efficiency (SE) are two of the key performance metrics in
future wireless networks, covering both design and operational requirements. For previous …

In this paper, we develop a resource allocation technique for a hybrid time division multiple
access (TDMA)-non-orthogonal multiple access (NOMA) system with opportunistic time …