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Reconfigurable Intelligent Surface (RIS) Aided Multi-User Networks: Interplay Between NOMA and RIS [article]

Yuanwei Liu and Xidong Mu and Xiao Liu and Marco Di Renzo and Zhiguo Ding and Robert Schober
2021 arXiv   pre-print
This article focuses on the exploitation of reconfigurable intelligent surfaces (RISs) in multi-user networks employing orthogonal multiple access (OMA) or non-orthogonal multiple access (NOMA), with an  ...  emphasis on investigating the interplay between NOMA and RIS.  ...  We first discuss the interplay between RIS deployment and NOMA for enabling a 'QoS-based NOMA' operation. For ease of exposition, we consider a two-user NOMA network.  ... 
arXiv:2011.13336v2 fatcat:yobomtbpwzf47iujcfazchzs7q

Fully Connected Reconfigurable Intelligent Surface Aided Rate-Splitting Multiple Access for Multi-User Multi-Antenna Transmission [article]

Tianyu Fang, Yijie Mao, Shanpu Shen, Zhencai Zhu, Bruno Clerckx
2022 arXiv   pre-print
It acts as a new benchmark for linearly precoded multi-user multi-antenna networks.  ...  Inspired by the appealing spectral efficiency gain achieved by RSMA over conventional MA schemes in multi-user multi-antenna transmission, in this paper we introduce RSMA to reconfigurable intelligent  ...  The interplay of RSMA and RIS is first investigated in [17] for multi-user multi-antenna networks, where RIS aided RSMA transmission model achieves higher energy efficiency than NOMA and orthogonal frequency  ... 
arXiv:2201.07048v2 fatcat:mnghgwxrhrf3fawbndegu6oqwu

Fully Connected Reconfigurable Intelligent Surface Aided Rate-Splitting Multiple Access for Multi-User Multi-Antenna Transmission [article]

Tianyu Fang, Yijie Mao, Shanpu Shen, Zhencai Zhu, Bruno Clerckx
It acts as a new benchmark for linearly precoded multi-user multi-antenna networks.  ...  Inspired by the appealing spectral efficiency gain achieved by RSMA over conventional MA schemes in multi-user multi-antenna transmission, in this paper we introduce RSMA to reconfigurable intelligent  ...  Zhang, “Intelligent reflecting surface enhanced wireless efficiency as the fully connected RIS aided SDMA in the high network via joint active and passive beamforming,” IEEE Trans  ... 
doi:10.48550/arxiv.2201.07048 fatcat:o2ldisttarhyzgmkuphrv7dkui

Rate-Splitting Multiple Access for 6G – Part III: Interplay with Reconfigurable Intelligent Surfaces [article]

Hongyu Li, Yijie Mao, Onur Dizdar, Bruno Clerckx
2022 arXiv   pre-print
As Part III of the tutorial, this letter provides an overview of integrating RSMA and reconfigurable intelligent surface (RIS).  ...  Then, we discuss the major advantages of RIS-aided RSMA networks, and illustrate the rate region of RIS-aided RSMA for both perfect and imperfect channel conditions.  ...  Among various enabling techniques, rate-splitting multiple access (RSMA) [3] , [4] at the protocol/algorithmic level and reconfigurable intelligent surface (RIS) [5] at the infrastructure level are  ... 
arXiv:2205.02036v2 fatcat:3hsxiigprffkzex6w3chmp6htm

Graph-Embedded Multi-Agent Learning for Smart Reconfigurable THz MIMO-NOMA Networks [article]

Xiaoxia Xu, Qimei Chen, Xidong Mu, Yuanwei Liu, Hao Jiang
2021 arXiv   pre-print
beams through the cooperation between access points (APs) and reconfigurable intelligent surfaces (RISs).  ...  To address these challenges, we propose a novel smart reconfigurable THz MIMO-NOMA framework, which can realize customizable and intelligent communications by flexibly and coordinately reconfiguring hybrid  ...  Fortunately, the newly-emerged reconfigurable intelligent surface (RIS) technology is regarded as a promising way to overcome the shortcomings in THz MIMO-NOMA communications [8] - [10] .  ... 
arXiv:2107.07198v3 fatcat:yt3qfyae5vcs5g6e7jwyasgl4e

The Interplay of Reconfigurable Intelligent Surfaces and Mobile Edge Computing in Future Wireless Networks: A Win-Win Strategy to 6G [article]

Mithun Mukherjee and Vikas Kumar and Mian Guo and Daniel Benevides da Costa and Ertugrul Basar and Zhiguo Ding
2021 arXiv   pre-print
Reconfigurable intelligent surface (RIS)-empowered communication is being considered as an enabling technology for sixth generation (6G) wireless networks.  ...  We provide a system-level perspective on the MEC-aided RIS (and RIS-assisted MEC) that will evolve wireless network towards 6G.  ...  RIS Reconfigurable Intelligent Surfaces (RISs): Fundamentals The advancement in programmable meta-materials has sparked an emerging technology, reconfigurable intelligent surfaces (RISs)-assisted communication  ... 
arXiv:2106.11784v1 fatcat:hhyhdeijtvcofma3vz2nnzvnza

Aerial Intelligent Reflecting Surfaces in MIMO-NOMA Networks: Fundamentals, Potential Achievements, and Challenges

Brena Kelly S. Lima, Arthur Sousa De Sena, Rui Dinis, Daniel Benevides Da Costa, Marko Beko, Rodolfo Oliveira, Merouane Debbah
2022 IEEE Open Journal of the Communications Society  
In parallel, intelligent reconfigurable surfaces (IRSs) have been widely pointed out as an auspicious solution to further improve spectral efficiency, coverage range, and connectivity.  ...  INDEX TERMS Intelligent reflecting surface (IRS), multiple-input multiple-output (MIMO), nonorthogonal multiple access (NOMA), unmanned aerial vehicle (UAV).  ...  User pairing and fixed power allocation scheme to enable RIS-NOMA network were investigated in [38] .  ... 
doi:10.1109/ojcoms.2022.3182223 fatcat:labuzk6bczef5defcpmyrdrv34

Reconfigurable intelligent surfaces for wireless communications: Overview of hardware designs, channel models, and estimation techniques

Mengnan Jian, George C. Alexandropoulos, Ertugrul Basar, Chongwen Huang, Ruiqi Liu, Yuanwei Liu, Chau Yuen
2022 Intelligent and Converged Networks  
Among the pioneering candidate technologies for 6G belong the reconfigurable intelligent surfaces (RISs), which are artificial planar structures with integrated electronic circuits that can be programmed  ...  RIS-empowered wireless networking approaches.  ...  Acknowledgment This work was supported by the EU H2020 Industrial Leadership Project (No. 101017011) and the Scientific and Technological Research Council of Turkey (TUBITAK) (No. 120E401).  ... 
doi:10.23919/icn.2022.0005 fatcat:o54tmkjpufey3fug57kdruy3x4

Artificial Intelligence Enabled NOMA Towards Next Generation Multiple Access [article]

Xiaoxia Xu, Yuanwei Liu, Xidong Mu, Qimei Chen, Hao Jiang, Zhiguo Ding
2022 arXiv   pre-print
This article focuses on the application of artificial intelligence (AI) in non-orthogonal multiple-access (NOMA), which aims to achieve automated, adaptive, and high-efficiency multi-user communications  ...  Furthermore, the interplays between the proposed cluster-free NOMA and emerging wireless techniques are presented. Finally, several open research issues of AI enabled NGMA are discussed.  ...  Reconfigurable Intelligent Surface As a disruptive wireless technology beyond 5G, reconfigurable intelligent surface (RIS) [14] can dynamically reconfigure the wireless environment and enable the smart  ... 
arXiv:2206.04992v1 fatcat:zmfk3f5nvndnlpjoqbtour6uo4

Special Issue on Next Generation Multiple Access—Part I

Yuanwei Liu, Shuowen Zhang, Zhiguo Ding, Robert Schober, Naofal Al-Dhahir, Ekram Hossain, Xuemin Shen
2022 IEEE Journal on Selected Areas in Communications  
On the other hand, the evolution toward next-generation wireless networks requires a paradigm shift from the communication-oriented design to a multi-functional design, including communication, sensing  ...  of next-generation wireless networks.  ...  In [A16] , Chen et al. propose a novel intelligent reconfigurable surface (IRS)-assisted semi-grant-free (SGF) NOMA transmission scheme.  ... 
doi:10.1109/jsac.2021.3139485 fatcat:c3shzlyzyvaixabgox7lx5kmdy

LiFi Through Reconfigurable Intelligent Surfaces: A New Frontier for 6G? [article]

Hanaa Abumarshoud, Lina Mohjazi, Octavia A. Dobre, Marco Di Renzo, Muhammad Ali Imran, Harald Haas
2021 arXiv   pre-print
Meanwhile, reconfigurable intelligent surfaces (RIS) emerged recently as a revolutionary concept that transfers the physical propagation environment into a fully controllable and customisable space in  ...  We anticipate that the integration of RIS in LiFi-enabled networks will not only support blockage mitigation but will also provision complex interactions among network entities, and is hence manifested  ...  This article aims to give a forward-looking vision of the role that reconfigurable intelligent surfaces (RISs) can play in enabling intelligent LiFi as a new frontier for 6G wireless networks.  ... 
arXiv:2104.02390v3 fatcat:v6kidus2c5hgbic264hrphvr6a

Rate-Splitting Multiple Access for 6G – Part I: Principles, Applications and Future Works [article]

Anup Mishra, Yijie Mao, Onur Dizdar, Bruno Clerckx
2022 arXiv   pre-print
In continuation of Part I, we will focus on the interplay of RSMA with integrated sensing and communication, and reconfigurable intelligent surfaces, respectively in Part II and Part III of this tutorial  ...  ) scheme for future networks such as 6G and beyond.  ...  Similarly, RSMA is capable of benefiting other promising and potential 6G massive antenna technologies such as reconfigurable intelligent surfaces (RIS) [3] and lens antenna arrays, which are vulnerable  ... 
arXiv:2205.02548v2 fatcat:m25dlgiyibhgbo46k4z4jav3uu

STAR-RIS Enabled Heterogeneous Networks: Ubiquitous NOMA Communication and Pervasive Federated Learning [article]

Wanli Ni, Yuanwei Liu, Yonina C. Eldar, Zhaohui Yang, Hui Tian
2021 arXiv   pre-print
surface (STAR-RIS).  ...  This paper integrates non-orthogonal multiple access (NOMA) and over-the-air federated learning (AirFL) into a unified framework using one simultaneous transmitting and reflecting reconfigurable intelligent  ...  Distinctively different from conventional wireless networks where the environment is uncontrollable, reconfigurable intelligent surface (RIS, a.k.a., intelligent reflecting surface) opens up a new communication  ... 
arXiv:2106.08592v2 fatcat:27c3poyoafa3dd4vgk4wxuqcjq

Evolution of NOMA Toward Next Generation Multiple Access (NGMA) for 6G [article]

Yuanwei Liu and Shuowen Zhang and Xidong Mu and Zhiguo Ding and Robert Schober and Naofal Al-Dhahir and Ekram Hossain and Xuemin Shen
2022 arXiv   pre-print
and the interplay between NOMA and other emerging physical layer techniques.  ...  Moreover, given the high compatibility and flexibility of NOMA, we provide an overview of current research efforts on multi-antenna techniques for NOMA, promising future application scenarios of NOMA,  ...  Reconfigurable Intelligent Surface (RIS)-NOMA Motivated by the development of metasurfaces, RISs [99] , also known as intelligent reflecting surfaces (IRSs) [100] , have recently emerged as a promising  ... 
arXiv:2108.04561v2 fatcat:yy2wmlweffft5b2wzefkrde6za

RIS-Assisted Visible Light Communication Systems: A Tutorial [article]

Sylvester Aboagye and Alain R. Ndjiongue and Telex M. N. Ngatched and Octavia Dobre and H. Vincent Poor
2022 arXiv   pre-print
In recent years, reconfigurable intelligent surfaces (RISs) that are more efficient than relays have become widely accepted as a method of mitigating skip-zones and providing reconfigurable radio environments  ...  , RIS elements to access point/user assignment design, and RIS array positioning design problems that need to be studied.  ...  As mentioned in [31] , the interplay between RISs and VLC can lead to innovative and progressive applications in B5G networks.  ... 
arXiv:2204.07198v1 fatcat:b3cihbfitnd2hm5cu25rokyppu
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