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 language | English |
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Title of host publication | 2021 IEEE Globecom Workshops (GC Wkshps): Proceedings |
Publisher | Institute of Electrical and Electronics Engineers Inc. |
ISBN (Electronic) | 9781665423908 |
ISBN (Print) | 9781665423915 |
DOIs | |
Publication status | Published - 24 Jan 2022 |
Event | IEEE Global Communications Conference 2021 - Madrid, Spain Duration: 07 Dec 2021 → 11 Dec 2021 |
Publication series
Name | IEEE Globecom Workshops (GC Wkshps) |
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Publisher | IEEE |
Conference
Conference | IEEE Global Communications Conference 2021 |
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Abbreviated title | GLOBECOM 2021 |
Country/Territory | Spain |
City | Madrid |
Period | 07/12/2021 → 11/12/2021 |
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