Selective infrastructure activation in cell-free massive MIMO: a two time-scale approach

F. Riera-Palou, G. Femenias, J. Garcia-Morales, Hien Quoc Ngo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

This paper recasts the concept of base station selective activation to the case of cell-free massive MIMO (CF-M-MIMO) networks as a means of pursuing a variety of quality and/or operational metrics. Two different mechanisms are examined that operate at two distinct time-scales. The first one relies on the users' mobility patterns (very long time-scale) while the second one exploits the selectivity of the large-scale channel gains linking users and access points (short time-scale). A novel algorithm is proposed to conduct this latter form of adaptation that is able to drastically reduce the fronthaul requirements of the network with hardly any performance penalty. Results are presented illustrating how the two mechanisms can be synergistically combined under either centralized or distributed precoding schemes.

Original languageEnglish
Title of host publication2021 IEEE Globecom Workshops (GC Wkshps): Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665423908
ISBN (Print)9781665423915
DOIs
Publication statusPublished - 24 Jan 2022
EventIEEE Global Communications Conference 2021 - Madrid, Spain
Duration: 07 Dec 202111 Dec 2021

Publication series

NameIEEE Globecom Workshops (GC Wkshps)
PublisherIEEE

Conference

ConferenceIEEE Global Communications Conference 2021
Abbreviated titleGLOBECOM 2021
Country/TerritorySpain
CityMadrid
Period07/12/202111/12/2021

Bibliographical note

Funding Information:
We acknowledge the Agencia Estatal de Investigación (AEI) for its support under projects PID2020-115323RBC32/AEI/10.13039/501100011033 and TEC2017-90093-C3-3-R, Spain, and U.K. Research and Innovation Future Leaders Fellowships under Grant MR/S017666/1.

Publisher Copyright:
© 2021 IEEE.

Keywords

  • Cell-free
  • Massive MIMO
  • User-centric

ASJC Scopus subject areas

  • Information Systems
  • Signal Processing
  • Software
  • Information Systems and Management
  • Artificial Intelligence
  • Computer Networks and Communications

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