A Review of Cognitive Radio Inspired NOMA Techniques

EasyChair Preprint 2711

Abstract

The explosive growth of mobile devices, as well as the increasing demand for wireless services, has created a situation of serious spectrum shortage. A solution to this problem is the introduction of cognitive radio (CR). Cognitive radio (CR) is a form of wireless communication in which a transmitter/receiver can intelligently detect which communication channels are in use and which are not, and instantly move into vacant channels while avoiding occupied ones. This optimizes the use of available radio-frequency (RF) spectrum.
Researchers have proposed several techniques to achieve high spectral efficiency. Among then non-orthogonal multiple access (NOMA) has the capabilities to be adapted in the 5G network. It has the potential to increase the number of users in the system. Integrating NOMA techniques into CR networks incurs severe technical challenges. Further to enhance the performance of NOMA, the MIMO techniques to CRNs will employ. It was shown that the performance of a Cognitive Radio Network (CRNs) with NOMA can be significantly improved by using MIMO techniques.
In this paper, we review the areas covered by Cognitive Radio inspired NOMA in order to improve spectral efficiency (SE) and energy efficiency (EE). The challenges and future research directions are also discussed in our paper.

Keyphrases: Cognitive Radio, Green Communication, NOMA

@booklet{EasyChair:2711,
  author    = {Sumita Majhi and Pinaki Mitra},
  title     = {A Review of Cognitive Radio Inspired NOMA Techniques},
  howpublished = {EasyChair Preprint 2711},
  year      = {EasyChair, 2020}}