A Survey on Non-Orthogonal Multiple Access: From the Perspective of Spectral Efficiency and Energy Efficiency

Hieu V. Nguyen, Hyeon Min Kim, Gil-Mo Kang, Kha-Hung Nguyen, Bui Van-Phuc and Oh-Soon Shin
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Hieu V. Nguyen: School of Electronic Engineering & Department of Information Communication Convergence Technology, Soongsil University, Seoul 06978, Korea
Hyeon Min Kim: School of Electronic Engineering & Department of Information Communication Convergence Technology, Soongsil University, Seoul 06978, Korea
Gil-Mo Kang: School of Electronic Engineering & Department of Information Communication Convergence Technology, Soongsil University, Seoul 06978, Korea
Kha-Hung Nguyen: School of Electronic Engineering & Department of Information Communication Convergence Technology, Soongsil University, Seoul 06978, Korea
Bui Van-Phuc: School of Electronic Engineering & Department of Information Communication Convergence Technology, Soongsil University, Seoul 06978, Korea
Oh-Soon Shin: School of Electronic Engineering & Department of Information Communication Convergence Technology, Soongsil University, Seoul 06978, Korea

Energies, 2020, vol. 13, issue 16, 1-20

Abstract: Non-orthogonal multiple access (NOMA) is a promising technology for next-generation wireless networks with emerging demands on low latency, high throughput, and massive connectivity. Unlike orthogonal multiple access, NOMA allows multiple users to share the same radio resources, which significantly improves spectral efficiency (SE). To achieve green wireless communications for numerous networked devices, NOMA helps reduce energy consumption while satisfying rate fairness and quality-of-experience requirements. The goal of this paper is to introduce the innovative approaches for NOMA in terms of the SE and energy efficiency, and discuss emerging technologies involved with NOMA. Further, its challenges and future research directions are highlighted.

Keywords: code domain; energy efficiency; non-orthogonal multiple access (NOMA); power domain; spare code multiple access (SCMA); spectral efficiency (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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