International Research Journal of Education and Technology

Mobile Internet and connected devices, offering a variety of services at different levels of performance, represents a major challenge for the fifth generation of wireless networks and beyond. This requires a paradigm shift toward the development of key enabling techniques for the next generation wireless networks. In this respect, NOMA (Non orthogonal multiple access) has recently emerged as a new communication paradigm to provide ubiquitous connectivity in radio frequency communications. The key feature of NOMA is to serve multiple users at the same time/frequency/code, but with different power levels, which yields a significant spectral efficiency gain over conventional orthogonal multiple access