Full Text:   <397>

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CLC number: TN929.5

On-line Access: 2020-01-13

Received: 2019-08-08

Revision Accepted: 2019-12-12

Crosschecked: 2019-12-12

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Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Fei-yan Tian

http://orcid.org/0000-0001-8242-2802

Xiao-ming Chen

http://orcid.org/0000-0002-1818-2135

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Frontiers of Information Technology & Electronic Engineering  2019 Vol.20 No.12 P.1665-1697

http://doi.org/10.1631/FITEE.1900405


Multiple-antenna techniques in nonorthogonal multiple access: a review


Author(s):  Fei-yan Tian, Xiao-ming Chen

Affiliation(s):  College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   tian_feiyan@zju.edu.cn, hen_xiaoming@zju.edu.cn

Key Words:  Nonorthogonal multiple access, Multiple-antenna technique, B5G, Internet of Things


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.

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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.

多天线非正交多址接入技术:综述

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。

关键词:非正交多址接入;多天线技术;B5G;物联网

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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