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A survey of non-orthogonal multiple access for 5G

A survey of non-orthogonal multiple access for 5G
A survey of non-orthogonal multiple access for 5G
In the 5th generation (5G) of wireless communication systems, hitherto unprecedented requirements are expected to be satisfied. As one of the promising techniques of addressing these challenges, non-orthogonal multiple access (NOMA) has been actively investigated in recent years. In contrast to the family of conventional orthogonal multiple access (OMA) schemes, thekey distinguishing feature of NOMA is to support a higher number of users than the number of orthogonal resource slots with the aid of non-orthogonal resource allocation. This may be realized by the sophisticated inter-user interference cancellation at the cost of an increased receiver complexity. In this article, we provide a comprehensive survey of the original birth, themost recent development, and the future research directions of NOMA. Specifically, the basic principle of NOMA will be introduced at first, with the comparison between NOMA and OMA especially from the perspective of information theory. Then, the prominent NOMA schemes are discussed by dividing them into two categories, namely, power-domain and code-domain NOMA. Their design principles and key features will be discussed in detail, and a systematic comparison of these NOMA schemes will be summarized in terms of their spectral efficiency, system performance, receiver complexity, etc. Finally, we will highlight a range of challenging open problems that should be solved for NOMA, along with corresponding opportunities and future research trends to address these challenges.
1553-877X
Dai, Linglong
a3b9a8e1-777f-4196-a388-969444c7239d
Wang, Bichai
d2972e74-aa6b-49b9-95e2-33b772358737
Ding, Zhiguo
65a55da1-d5a1-4bf3-b09c-bdf1e7a5991f
Wang, Zhaocheng
70339538-3970-4094-bcfc-1b5111dfd8b4
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Dai, Linglong
a3b9a8e1-777f-4196-a388-969444c7239d
Wang, Bichai
d2972e74-aa6b-49b9-95e2-33b772358737
Ding, Zhiguo
65a55da1-d5a1-4bf3-b09c-bdf1e7a5991f
Wang, Zhaocheng
70339538-3970-4094-bcfc-1b5111dfd8b4
Chen, Sheng
9310a111-f79a-48b8-98c7-383ca93cbb80
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Dai, Linglong, Wang, Bichai, Ding, Zhiguo, Wang, Zhaocheng, Chen, Sheng and Hanzo, Lajos (2018) A survey of non-orthogonal multiple access for 5G. IEEE Communications Surveys & Tutorials. (doi:10.1109/COMST.2018.2835558).

Record type: Article

Abstract

In the 5th generation (5G) of wireless communication systems, hitherto unprecedented requirements are expected to be satisfied. As one of the promising techniques of addressing these challenges, non-orthogonal multiple access (NOMA) has been actively investigated in recent years. In contrast to the family of conventional orthogonal multiple access (OMA) schemes, thekey distinguishing feature of NOMA is to support a higher number of users than the number of orthogonal resource slots with the aid of non-orthogonal resource allocation. This may be realized by the sophisticated inter-user interference cancellation at the cost of an increased receiver complexity. In this article, we provide a comprehensive survey of the original birth, themost recent development, and the future research directions of NOMA. Specifically, the basic principle of NOMA will be introduced at first, with the comparison between NOMA and OMA especially from the perspective of information theory. Then, the prominent NOMA schemes are discussed by dividing them into two categories, namely, power-domain and code-domain NOMA. Their design principles and key features will be discussed in detail, and a systematic comparison of these NOMA schemes will be summarized in terms of their spectral efficiency, system performance, receiver complexity, etc. Finally, we will highlight a range of challenging open problems that should be solved for NOMA, along with corresponding opportunities and future research trends to address these challenges.

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NOMA - Accepted Manuscript
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Accepted/In Press date: 4 May 2018
e-pub ahead of print date: 11 May 2018

Identifiers

Local EPrints ID: 420432
URI: http://eprints.soton.ac.uk/id/eprint/420432
ISSN: 1553-877X
PURE UUID: 0604058e-4693-4a6d-bf57-7a96966adb18
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 08 May 2018 16:30
Last modified: 07 Oct 2020 05:04

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Contributors

Author: Linglong Dai
Author: Bichai Wang
Author: Zhiguo Ding
Author: Zhaocheng Wang
Author: Sheng Chen
Author: Lajos Hanzo ORCID iD

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