Optimal energy efficiency in cell-free massive MIMO systems: A stochastic geometry approach

Anastasios Papazafeiropoulos; Hien Quoc Ngo; Pandelis Kourtessis; Symeon Chatzinotas; John M. Senior

doi:10.1109/PIMRC48278.2020.9217353

Optimal energy efficiency in cell-free massive MIMO systems: A stochastic geometry approach

Anastasios Papazafeiropoulos, Hien Quoc Ngo, Pandelis Kourtessis, Symeon Chatzinotas, John M. Senior

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

3 Citations (Scopus)

44 Downloads (Pure)

Abstract

The increasing demand for green wireless communications and the benefits of the promising cell-free (CF) massive multiple-input-multiple-output (mMIMO) systems towards their optimal energy efficiency (EE) are the focal points of this work. Specifically, despite previous works assuming a uniform placement for the access points (APs), we consider that their locations follow a Poisson point process (PPP) which approaches their opportunistic spatial randomness. Based on stochastic geometry, we derive a lower bound on the average spectral efficiency, and under a realistic power consumption model for CF mMIMO systems, we formulate an EE maximization problem achieving to obtain in closed form the optimal EE per unit area in terms of the pilot reuse factor and the AP density. Note that we have defined the EE per unit area and not just the EE to characterize the energy in systems with multi-point transmission. Thus, we provide important design insights for energy-efficient CF mMIMO systems.

Original language	English
Title of host publication	2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications
Subtitle of host publication	Proceedings
Publisher	Institute of Electrical and Electronics Engineers (IEEE)
Number of pages	7
ISBN (Electronic)	9781728144900
ISBN (Print)	9781728144917
DOIs	https://doi.org/10.1109/PIMRC48278.2020.9217353
Publication status	Published - 8 Oct 2020
Event	31st IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2020 - Virtual, London, United Kingdom Duration: 31 Aug 2020 → 3 Sept 2020 https://pimrc2020.ieee-pimrc.org/

Publication series

Name	IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Volume	2020-August

Conference

Conference	31st IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2020
Country/Territory	United Kingdom
City	Virtual, London
Period	31/08/20 → 3/09/20
Internet address	https://pimrc2020.ieee-pimrc.org/

Keywords

5G and beyond MIMO systems
Cell-free massive MIMO systems
Energy efficiency
Small cell networks
Stochastic geometry

Access to Document

10.1109/PIMRC48278.2020.9217353Licence: Unspecified

EE_CellFree Massive MIMO HetNets
© 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Accepted author manuscript, 866 KBLicence: Unspecified

Cite this

Papazafeiropoulos, A., Ngo, H. Q., Kourtessis, P., Chatzinotas, S., & Senior, J. M. (2020). Optimal energy efficiency in cell-free massive MIMO systems: A stochastic geometry approach. In 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications: Proceedings Article 9217353 (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC; Vol. 2020-August). Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/PIMRC48278.2020.9217353

Papazafeiropoulos, Anastasios ; Ngo, Hien Quoc ; Kourtessis, Pandelis et al. / Optimal energy efficiency in cell-free massive MIMO systems: A stochastic geometry approach. 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications: Proceedings. Institute of Electrical and Electronics Engineers (IEEE), 2020. (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC).

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Papazafeiropoulos, A, Ngo, HQ, Kourtessis, P, Chatzinotas, S & Senior, JM 2020, Optimal energy efficiency in cell-free massive MIMO systems: A stochastic geometry approach. in 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications: Proceedings., 9217353, IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, vol. 2020-August, Institute of Electrical and Electronics Engineers (IEEE), 31st IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2020, Virtual, London, United Kingdom, 31/08/20. https://doi.org/10.1109/PIMRC48278.2020.9217353

Optimal energy efficiency in cell-free massive MIMO systems: A stochastic geometry approach. / Papazafeiropoulos, Anastasios; Ngo, Hien Quoc; Kourtessis, Pandelis et al.
2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications: Proceedings. Institute of Electrical and Electronics Engineers (IEEE), 2020. 9217353 (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC; Vol. 2020-August).

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

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AU - Senior, John M.

N1 - © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

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Papazafeiropoulos A, Ngo HQ, Kourtessis P, Chatzinotas S, Senior JM. Optimal energy efficiency in cell-free massive MIMO systems: A stochastic geometry approach. In 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications: Proceedings. Institute of Electrical and Electronics Engineers (IEEE). 2020. 9217353. (IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC). doi: 10.1109/PIMRC48278.2020.9217353

Optimal energy efficiency in cell-free massive MIMO systems: A stochastic geometry approach

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