RIS and cell-free massive MIMO: a marriage for harsh propagation environments

Trinh Van Chien; Hien Quoc Ngo; Symeon Chatzinotas; Marco Di Renzo; Bjorn Ottersten

doi:10.1109/GLOBECOM46510.2021.9685233

RIS and cell-free massive MIMO: a marriage for harsh propagation environments

Trinh Van Chien, Hien Quoc Ngo, Symeon Chatzinotas, Marco Di Renzo, Bjorn Ottersten

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

This paper considers Cell-Free Massive Multiple Input Multiple Output (MIMO) systems with the assistance of an RIS for enhancing the system performance. Distributed maximum-ratio combining (MRC) is considered at the access points (APs). We introduce an aggregated channel estimation method that provides sufficient information for data processing. The considered system is studied by using asymptotic analysis which lets the number of APs and/or the number of RIS elements grow large. A lower bound for the channel capacity is obtained for a finite number of APs and engineered scattering elements of the RIS, and closed-form expression for the uplink ergodic net throughput is formulated. In addition, a simple scheme for controlling the configuration of the RIS scattering elements is proposed. Numerical results verify the effectiveness of the proposed system design and the benefits of using RISs in Cell-Free Massive MIMO systems are quantified.

Original language	English
Title of host publication	2021 IEEE Global Communications Conference, GLOBECOM 2021 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781728181042
ISBN (Print)	9781728181059
DOIs	https://doi.org/10.1109/GLOBECOM46510.2021.9685233
Publication status	Published - 02 Feb 2022
Event	2021 IEEE Global Communications Conference, GLOBECOM 2021 - Madrid, Spain Duration: 07 Dec 2021 → 11 Dec 2021

Publication series

Name	IEEE Global Communications Conference, GLOBECOM- Proceedings
Publisher	IEEE
ISSN (Print)	1930-529X

Conference

Conference	2021 IEEE Global Communications Conference, GLOBECOM 2021
Country/Territory	Spain
City	Madrid
Period	07/12/2021 → 11/12/2021

Bibliographical note

Funding Information:
This work of T. V. Chien, S. Chatzinotas, and B. Ottersten was supported by RISOTTI - Reconfigurable Intelligent Surfaces for Smart Cities under project FNR/C20/IS/14773976/RISOTTI. The work of H. Q. Ngo was supported by the UK Research and Innovation Future Leaders Fellowships under Grant MR/S017666/1. The work of M. Di Renzo was supported in part by the European Commission through the H2020 ARIADNE project under grant agreement number 871464 and through the H2020 RISE-6G project under grant agreement number 101017011. The long version of this paper was submitted to the IEEE Trans. Wireless Comm. [1].

Publisher Copyright:
© 2021 IEEE.

ASJC Scopus subject areas

Artificial Intelligence
Computer Networks and Communications
Computer Science Applications
Hardware and Architecture
Information Systems and Management
Safety, Risk, Reliability and Quality
Health Informatics

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Cite this

Van Chien, T., Ngo, H. Q., Chatzinotas, S., Di Renzo, M., & Ottersten, B. (2022). RIS and cell-free massive MIMO: a marriage for harsh propagation environments. In 2021 IEEE Global Communications Conference, GLOBECOM 2021 - Proceedings ( IEEE Global Communications Conference, GLOBECOM- Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/GLOBECOM46510.2021.9685233

Van Chien, Trinh ; Ngo, Hien Quoc ; Chatzinotas, Symeon ; Di Renzo, Marco ; Ottersten, Bjorn. / RIS and cell-free massive MIMO: a marriage for harsh propagation environments. 2021 IEEE Global Communications Conference, GLOBECOM 2021 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2022. ( IEEE Global Communications Conference, GLOBECOM- Proceedings).

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abstract = "This paper considers Cell-Free Massive Multiple Input Multiple Output (MIMO) systems with the assistance of an RIS for enhancing the system performance. Distributed maximum-ratio combining (MRC) is considered at the access points (APs). We introduce an aggregated channel estimation method that provides sufficient information for data processing. The considered system is studied by using asymptotic analysis which lets the number of APs and/or the number of RIS elements grow large. A lower bound for the channel capacity is obtained for a finite number of APs and engineered scattering elements of the RIS, and closed-form expression for the uplink ergodic net throughput is formulated. In addition, a simple scheme for controlling the configuration of the RIS scattering elements is proposed. Numerical results verify the effectiveness of the proposed system design and the benefits of using RISs in Cell-Free Massive MIMO systems are quantified.",

author = "{Van Chien}, Trinh and Ngo, {Hien Quoc} and Symeon Chatzinotas and {Di Renzo}, Marco and Bjorn Ottersten",

note = "Funding Information: This work of T. V. Chien, S. Chatzinotas, and B. Ottersten was supported by RISOTTI - Reconfigurable Intelligent Surfaces for Smart Cities under project FNR/C20/IS/14773976/RISOTTI. The work of H. Q. Ngo was supported by the UK Research and Innovation Future Leaders Fellowships under Grant MR/S017666/1. The work of M. Di Renzo was supported in part by the European Commission through the H2020 ARIADNE project under grant agreement number 871464 and through the H2020 RISE-6G project under grant agreement number 101017011. The long version of this paper was submitted to the IEEE Trans. Wireless Comm. [1]. Publisher Copyright: {\textcopyright} 2021 IEEE.; 2021 IEEE Global Communications Conference, GLOBECOM 2021 ; Conference date: 07-12-2021 Through 11-12-2021",

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Van Chien, T, Ngo, HQ, Chatzinotas, S, Di Renzo, M & Ottersten, B 2022, RIS and cell-free massive MIMO: a marriage for harsh propagation environments. in 2021 IEEE Global Communications Conference, GLOBECOM 2021 - Proceedings. IEEE Global Communications Conference, GLOBECOM- Proceedings, Institute of Electrical and Electronics Engineers Inc., 2021 IEEE Global Communications Conference, GLOBECOM 2021, Madrid, Spain, 07/12/2021. https://doi.org/10.1109/GLOBECOM46510.2021.9685233

RIS and cell-free massive MIMO: a marriage for harsh propagation environments. / Van Chien, Trinh; Ngo, Hien Quoc; Chatzinotas, Symeon; Di Renzo, Marco; Ottersten, Bjorn.

2021 IEEE Global Communications Conference, GLOBECOM 2021 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2022. ( IEEE Global Communications Conference, GLOBECOM- Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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T1 - RIS and cell-free massive MIMO: a marriage for harsh propagation environments

AU - Van Chien, Trinh

AU - Ngo, Hien Quoc

AU - Chatzinotas, Symeon

AU - Di Renzo, Marco

AU - Ottersten, Bjorn

N1 - Funding Information: This work of T. V. Chien, S. Chatzinotas, and B. Ottersten was supported by RISOTTI - Reconfigurable Intelligent Surfaces for Smart Cities under project FNR/C20/IS/14773976/RISOTTI. The work of H. Q. Ngo was supported by the UK Research and Innovation Future Leaders Fellowships under Grant MR/S017666/1. The work of M. Di Renzo was supported in part by the European Commission through the H2020 ARIADNE project under grant agreement number 871464 and through the H2020 RISE-6G project under grant agreement number 101017011. The long version of this paper was submitted to the IEEE Trans. Wireless Comm. [1]. Publisher Copyright: © 2021 IEEE.

PY - 2022/2/2

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N2 - This paper considers Cell-Free Massive Multiple Input Multiple Output (MIMO) systems with the assistance of an RIS for enhancing the system performance. Distributed maximum-ratio combining (MRC) is considered at the access points (APs). We introduce an aggregated channel estimation method that provides sufficient information for data processing. The considered system is studied by using asymptotic analysis which lets the number of APs and/or the number of RIS elements grow large. A lower bound for the channel capacity is obtained for a finite number of APs and engineered scattering elements of the RIS, and closed-form expression for the uplink ergodic net throughput is formulated. In addition, a simple scheme for controlling the configuration of the RIS scattering elements is proposed. Numerical results verify the effectiveness of the proposed system design and the benefits of using RISs in Cell-Free Massive MIMO systems are quantified.

AB - This paper considers Cell-Free Massive Multiple Input Multiple Output (MIMO) systems with the assistance of an RIS for enhancing the system performance. Distributed maximum-ratio combining (MRC) is considered at the access points (APs). We introduce an aggregated channel estimation method that provides sufficient information for data processing. The considered system is studied by using asymptotic analysis which lets the number of APs and/or the number of RIS elements grow large. A lower bound for the channel capacity is obtained for a finite number of APs and engineered scattering elements of the RIS, and closed-form expression for the uplink ergodic net throughput is formulated. In addition, a simple scheme for controlling the configuration of the RIS scattering elements is proposed. Numerical results verify the effectiveness of the proposed system design and the benefits of using RISs in Cell-Free Massive MIMO systems are quantified.

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DO - 10.1109/GLOBECOM46510.2021.9685233

M3 - Conference contribution

AN - SCOPUS:85122357811

SN - 9781728181059

T3 - IEEE Global Communications Conference, GLOBECOM- Proceedings

BT - 2021 IEEE Global Communications Conference, GLOBECOM 2021 - Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2021 IEEE Global Communications Conference, GLOBECOM 2021

Y2 - 7 December 2021 through 11 December 2021

ER -

Van Chien T, Ngo HQ, Chatzinotas S, Di Renzo M, Ottersten B. RIS and cell-free massive MIMO: a marriage for harsh propagation environments. In 2021 IEEE Global Communications Conference, GLOBECOM 2021 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2022. ( IEEE Global Communications Conference, GLOBECOM- Proceedings). https://doi.org/10.1109/GLOBECOM46510.2021.9685233

RIS and cell-free massive MIMO: a marriage for harsh propagation environments

Abstract

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ASJC Scopus subject areas

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