Embracing non-orthogonalmultiple access in future wireless networks
This paper provides a comprehensive survey of the impact of the emerging communication technique, non-orthogonal multiple access (NOMA), on future wireless networks. Particularly, how the NOMA principle affects the design of the generation multiple access techniques is introduced first. Then the applications of NOMA to other advanced communication techniques, such as wireless caching, multiple-input multiple-output techniques, millimeter-wave communications, and cooperative relaying, are discussed. The impact of NOMA on communication systems beyond cellular networks is also illustrated, through the examples of digital TV, satellite communications, vehicular networks, and visible light communications. Finally, the study is concluded with a discussion of important research challenges and promising future directions in NOMA.
Key wordsNon-orthogonal multiple access (NOMA) Wireless caching Multiple-input multiple-output (MIMO) NOMA Cooperative NOMA Millimeter-wave networks Visible light communications (VLC)
- Huawei Inc., 2015. 5G: a Techology Vision. http://www.huawei.com/en/about-huawei/publications/winwin-magazine/19/HW_329327 Google Scholar
- NTT Docomo Inc., 2014. 5G Radio Access: Requirements, Concepts and Technologies.Google Scholar
- NTT Docomo Inc., 2017. World’s First Successful 5G Trial Using Smartphone-Sized NOMA Chipset-Embedded Device to Increase Spectral Efficiency. https://www.nttdocomo.co.jp/english/info/media_center/pr/2017/1102_02.html Google Scholar
- techUK, 2015. 5G Innovation Opportunities—a Discussion Paper.Google Scholar
- Wei Z, Yuan J, Ng D, et al., 2016. A survey of downlink non-orthogonal multiple access for 5G wireless communication networks. ZTE Commun, 14(4):17–25.Google Scholar