Multiple-antenna techniques in nonorthogonal multiple access: a review

Fei-yan TIAN; Xiao-ming CHEN

doi:10.1631/FITEE.1900405

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Multiple-antenna techniques in nonorthogonal multiple access: a review

Regular Papers | Updated：2022-05-19

- Multiple-antenna techniques in nonorthogonal multiple access: a review
- 多天线非正交多址接入技术:综述
- Frontiers of Information Technology & Electronic Engineering Vol. 20, Issue 12, Pages: 1665-1697(2019)
- Affiliations：
  
  College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China
- Author bio：
  
  [ "Fei-yan TIAN, tian_feiyan@zju.edu.cn" ]
  [ "", "Dr. Xiao-ming CHEN, corresponding author of this invited review article, received his PhD degree in Communication and Information Systems from Zhejiang University, where he is currently a professor. From January 2015 to June 2016, he was a Humboldt Research Fellow at the University of Erlangen-Nuremberg, Germany. His research interests include 5G/6G key techniques, IoT theories and techniques, and smart communications. Dr. CHEN was an editor for IEEE Commun Lett, and is now serving as an editor of IEEE Trans Commun, a corresponding expert of Front Inform Technol Electron Eng, and a lead guest editor of the special issue \"Massive Access for 5G and Beyond\" in IEEE JSAC. He was an exemplary reviewer for IEEE Commun Lett in 2014, and for IEEE Trans Commun from 2015 to 2018. He was a recipient of Best Paper Awards of IEEE/CIC ICCC 2018 and IEEE ICC 2019" ]
- Funds：
- DOI：10.1631/FITEE.1900405
  CLC： TN929.5
- Received：08 August 2019，
  
  Revised：2019-12-12，
  
  Published：2019-12
- Accepted：
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Fei-yan TIAN, Xiao-ming CHEN. Multiple-antenna techniques in nonorthogonal multiple access: a review[J]. Frontiers of Information Technology & Electronic Engineering, 2019, 20(12): 1665-1697.
DOI：

Fei-yan TIAN, Xiao-ming CHEN. Multiple-antenna techniques in nonorthogonal multiple access: a review[J]. Frontiers of Information Technology & Electronic Engineering, 2019, 20(12): 1665-1697. DOI： 10.1631/FITEE.1900405.

摘要

作为一种前沿的物理层技术，非正交多址接入技术允许多用户共享同一时空资源，因此增加了可接入用户数量，从而改善频谱效率。在第5代及未来无线通信网络中，非正交多址接入技术为实现大规模万物互联提供了可行方案。然而，严重的共道干扰和较高的实施复杂度阻碍了其在实际系统中的应用。为解决这些问题，多天线技术凭借其在空间自由度上的优势，已被广泛应用于非正交多址接入系统。本文针对多天线技术在非正交多址接入系统中各种各样的应用提供了一个全面综述，主要强调其在消除空间干扰和降低实施复杂度上的优势。特别地，详细调查了多天线技术在两用户、多用户、大规模连接和异构非正交多址接入系统中的应用。最后，预测了未来相关研究方向与挑战。

Abstract

As a promising physical layer technique

nonorthogonal multiple access (NOMA) can admit multiple users over the same space-time resource block

and thus improve the spectral efficiency and increase the number of access users. Specifically

NOMA provides a feasible solution to massive Internet of Things (IoT) in 5G and beyond-5G wireless networks over a limited radio spectrum. However

severe co-channel interference and high implementation complexity hinder its application in practical systems. To solve these problems

multiple-antenna techniques have been widely used in NOMA systems by exploiting the benefits of spatial degrees of freedom. This study provides a comprehensive review of various multiple-antenna techniques in NOMA systems

with an emphasis on spatial interference cancellation and complexity reduction. In particular

we provide a detailed investigation on multiple-antenna techniques in two-user

multiuser

massive connectivity

and heterogeneous NOMA systems. Finally

future research directions and challenges are identified.

关键词

Keywords

references

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