Reference : Downlink Throughput of Cell-Free Massive MIMO Systems Assisted by Hybrid Relay-Reflec...

	Document type :	Scientific congresses, symposiums and conference proceedings : Poster
	Discipline(s) :	Engineering, computing & technology : Computer science
	Focus Areas :	Computational Sciences
	To cite this reference:	http://hdl.handle.net/10993/53272

Title :	Downlink Throughput of Cell-Free Massive MIMO Systems Assisted by Hybrid Relay-Reflecting Intelligent Surfaces
Language :	English
Author, co-author :	Nguyen, Nhan T. []
	Nguyen, V.-Dinh []
	Nguyen, Hieu V. []
	Ngo, Hien Q. []
	Chatzinotas, Symeon [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom >]
	Juntti, Markku []
Publication date :	May-2022
Peer reviewed :	Yes
Event name :	ICC 2022 - IEEE International Conference on Communications
Event date :	16-20 May 2022
Event organizer :	IEEE
Event place (city) :	Seoul
Event country :	Republic of Korea
Abstract :	[en] We consider in this work a cell-free (CF) massive multiple-input-multiple-output (mMIMO) system where multiple hybrid relay-reflecting intelligent surfaces (HR-RIS) are deployed to assist communication between access points and users. We first present the signal model and derive the minimum-mean-square-error estimate of the effective channels. We then present a comprehensive analysis for the considered HR-RIS-aided CF mMIMO system, where the closed-form expression of the downlink throughput is derived. The presented analytical results are also valid for conventional CF mMIMO systems, i.e., CF mMIMO systems with and without passive reconfigurable intelligent surfaces. Finally, the analytical derivations are verified by extensive numerical results.
Funders :	10.13039/501100002341-Academy of Finland
Permalink :	http://hdl.handle.net/10993/53272
DOI :	10.1109/ICC45855.2022.9838672
Other URL :	https://ieeexplore.ieee.org/document/9838672

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