Rate-Splitting Multiple Access: Fundamentals, Survey, and Future Research Trends

doi:10.1109/COMST.2022.3191937

	Rate-Splitting Multiple Access: Fundamentals, Survey, and Future Research Trends
	Yijie Mao1 ; Onur Dizdar 2; Bruno Clerckx 2; Robert Schober 3; Petar Popovski 4; H. Vincent Poor 5
	2022
发表期刊	IEEE COMMUNICATIONS SURVEYS AND TUTORIALS
ISSN	2373-745X
EISSN	1553-877X
卷号	24 期号:4 页码:1-1
发表状态	已发表
DOI	10.1109/COMST.2022.3191937
摘要	Rate-splitting multiple access (RSMA) has emerged as a novel, general, and powerful framework for the design and optimization of non-orthogonal transmission, multiple access (MA), and interference management strategies for future wireless networks. By exploiting splitting of user messages as well as non-orthogonal transmission of common messages decoded by multiple users and private messages decoded by their corresponding users, RSMA can softly bridge and therefore reconcile the two extreme interference management strategies of fully decoding interference and treating interference as noise. RSMA has been shown to generalize and subsume as special cases four existing MA schemes, namely, orthogonal multiple access (OMA), physical-layer multicasting, space division multiple access (SDMA) based on linear precoding (currently used in the fifth generation wireless network5G), and non-orthogonal multiple access (NOMA) based on linearly precoded superposition coding with successive interference cancellation (SIC). Through information and communication theoretic analysis, RSMA has been shown to be optimal (from a Degrees-of-Freedom region perspective) in several transmission scenarios. Compared to the conventional MA strategies used in 5G, RSMA enables spectral efficiency (SE), energy efficiency (EE), coverage, user fairness, reliability, and quality of service (QoS) enhancements for a wide range of network loads (including both underloaded and overloaded regimes) and user channel conditions. Furthermore, it enjoys a higher robustness against imperfect channel state information at the transmitter (CSIT) and entails lower feedback overhead and complexity. Despite its great potential to fundamentally change the physical (PHY) layer and media access control (MAC) layer of wireless communication networks, RSMA is still confronted with many challenges on the road towards standardization. In this paper, we present the first comprehensive tutorial on RSMA by providing a survey of the pertinent state-of-the-art research, detailing its architecture, taxonomy, and various appealing applications, as well as comparing with existing MA schemes in terms of their overall frameworks, performance, and complexities. An in-depth discussion of future RSMA research challenges is also provided to inspire future research on RSMA-aided wireless communication for beyond 5G systems. IEEE
关键词	5G mobile communication systems Channel state information Communication channels (information theory) Decoding Degrees of freedom (mechanics) Energy efficiency Medium access control MIMO systems Multiple access interference Network layers Quality of service Radio transmission Space division multiple access Spectrum efficiency Testbeds Transmitters Wireless networks 5g mobile communication Beyond 5g Interference Interference management Mobile communications Multiaccess communication Multiple access Multiple inputs Multiple outputs Multiple-input multiple-output Next generation multiple access Non-orthogonal Non-orthogonal multiple access Non-orthogonal transmission Rate splitting Rate-splitting Rate-splitting multiple access Time-frequency Analysis Wireless communications
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收录类别	EI ; SCI
语种	英语
资助项目	U.K. Engineering and Physical Sciences Research Council (EPSRC)["EP/N015312/1","EP/R511547/1"] ; Shanghai Sailing Program[22YF1428400] ; Federal Ministry of Education and Research of Germany[PIN 16KISK023] ; U.S. National Science Foundation[CNS-2128448]
WOS研究方向	Computer Science ; Telecommunications
WOS类目	Computer Science, Information Systems ; Telecommunications
WOS记录号	WOS:000923685400006
出版者	Institute of Electrical and Electronics Engineers Inc.
EI入藏号	20223112530375
EI主题词	Surveys
EI分类号	525.2 Energy Conservation ; 711.2 Electromagnetic Waves in Relation to Various Structures ; 716.1 Information Theory and Signal Processing ; 716.3 Radio Systems and Equipment ; 722.3 Data Communication, Equipment and Techniques ; 723 Computer Software, Data Handling and Applications ; 723.2 Data Processing and Image Processing ; 723.5 Computer Applications ; 931.1 Mechanics
原始文献类型	Article in Press
来源库	IEEE
引用统计	被引频次：247[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/211759
专题	信息科学与技术学院信息科学与技术学院_PI研究组_毛奕婕组
作者单位	1.School of Information Science and Technology, ShanghaiTech University, Shanghai, China 2.Department of Electrical and Electronic Engineering, Imperial College London, London, U.K. 3.Institute of Digital Communications, Friedrich-Alexander University Erlangen–Nuremberg, Erlangen, Germany 4.Department of Electronic Systems, Aalborg University, Aalborg, Denmark 5.Department of Electrical and Computer Engineering, Princeton University, Princeton, NJ, USA
第一作者单位	信息科学与技术学院
第一作者的第一单位	信息科学与技术学院
推荐引用方式 GB/T 7714	Yijie Mao,Onur Dizdar,Bruno Clerckx,et al. Rate-Splitting Multiple Access: Fundamentals, Survey, and Future Research Trends[J]. IEEE COMMUNICATIONS SURVEYS AND TUTORIALS,2022,24(4):1-1.
APA	Yijie Mao,Onur Dizdar,Bruno Clerckx,Robert Schober,Petar Popovski,&H. Vincent Poor.(2022).Rate-Splitting Multiple Access: Fundamentals, Survey, and Future Research Trends.IEEE COMMUNICATIONS SURVEYS AND TUTORIALS,24(4),1-1.
MLA	Yijie Mao,et al."Rate-Splitting Multiple Access: Fundamentals, Survey, and Future Research Trends".IEEE COMMUNICATIONS SURVEYS AND TUTORIALS 24.4(2022):1-1.