Contemporary and future 5G wireless communication systems: A survey of basic physical layer techniques and performance analysis

The rapid evolution of technologies and use cases cellular networks increased the necessity for next-generation cellular systems. To coup, this demand the 3GPP formed a task force and started to develops the next-generation systems. In this work first, we have analyzed the next-generation mobile network, a.k.a. 5G, in terms of new technologies that are going to be adopted in its physical layer. One of the choke points of fast and reliable mobile networks is the handling of multiple users. Many models are studied or even used in the previous generations of mobile networks. But with the rapid growth of the damned data rate of those techniques can not handle the required rate within a good margin of performance. One of the main contenders to replace the current generation OFDMA technique is the use of Non-orthogonal multiple access techniques (NOMA). After a brief review of various types of NOMA, we focused on power Domain NOMA due to its performance and extensive study over it among the scholars and we demonstrated the preeminence of NOMA over conventional OMA techniques through computer simulations in various performance metrics. In the final chapter, we presented some of the new possible development to NOMA to ever more increase its performance to stay along with newly developed needs.