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Handling PA Nonlinearity in Massive MIMO : What are the Tradeoffs between System Capacity and Power Consumption

Muneer, Sidra LU ; Liu, Liang LU orcid ; Edfors, Ove LU orcid ; Sjoland, Henrik LU orcid and Der Petre, Liesbet Van (2020) 54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020 In Conference Record - Asilomar Conference on Signals, Systems and Computers 2020-November. p.974-978
Abstract

Massive MIMO enables a very high spectral efficiency by spatial multiplexing and opens opportunities to reduce transmit power per antenna. On the other side, it also introduces new challenges in tackling the power amplifier nonlinearity due to the increased number of antennas. The behavior of Out-of-Band radiation from PAs in Massive MIMO is non-trivial depending upon the applied precoding scheme, propagation environment, and how the users are distributed spatially. In this paper, we analyze the in-band and Out-of-Band power distribution in space for a Massive MIMO base station with nonlinear power amplifiers. We also study the tradeoff between amplifier power consumption and system performance (in terms of error vector magnitude at... (More)

Massive MIMO enables a very high spectral efficiency by spatial multiplexing and opens opportunities to reduce transmit power per antenna. On the other side, it also introduces new challenges in tackling the power amplifier nonlinearity due to the increased number of antennas. The behavior of Out-of-Band radiation from PAs in Massive MIMO is non-trivial depending upon the applied precoding scheme, propagation environment, and how the users are distributed spatially. In this paper, we analyze the in-band and Out-of-Band power distribution in space for a Massive MIMO base station with nonlinear power amplifiers. We also study the tradeoff between amplifier power consumption and system performance (in terms of error vector magnitude at intended receivers) for PAs with different backoff operating levels. The spatial analysis of Out-of-Band under more realistic channel conditions is more reflective of the situation, to determine system emission requirements. The tradeoff between performance and power consumption will provide a basis for future investigations into the design of efficient Massive MIMO systems, taking nonlinearities into account.

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Please use this url to cite or link to this publication:
author
; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
Conference Record of the 54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020
series title
Conference Record - Asilomar Conference on Signals, Systems and Computers
editor
Matthews, Michael B.
volume
2020-November
article number
9443341
pages
5 pages
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
conference name
54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020
conference location
Pacific Grove, United States
conference dates
2020-11-01 - 2020-11-05
external identifiers
  • scopus:85107748567
ISSN
1058-6393
ISBN
9780738131269
DOI
10.1109/IEEECONF51394.2020.9443341
language
English
LU publication?
yes
id
2861ced8-88a0-4338-872c-20a2906e8f00
date added to LUP
2021-07-09 15:14:28
date last changed
2024-04-06 06:11:02
@inproceedings{2861ced8-88a0-4338-872c-20a2906e8f00,
  abstract     = {{<p>Massive MIMO enables a very high spectral efficiency by spatial multiplexing and opens opportunities to reduce transmit power per antenna. On the other side, it also introduces new challenges in tackling the power amplifier nonlinearity due to the increased number of antennas. The behavior of Out-of-Band radiation from PAs in Massive MIMO is non-trivial depending upon the applied precoding scheme, propagation environment, and how the users are distributed spatially. In this paper, we analyze the in-band and Out-of-Band power distribution in space for a Massive MIMO base station with nonlinear power amplifiers. We also study the tradeoff between amplifier power consumption and system performance (in terms of error vector magnitude at intended receivers) for PAs with different backoff operating levels. The spatial analysis of Out-of-Band under more realistic channel conditions is more reflective of the situation, to determine system emission requirements. The tradeoff between performance and power consumption will provide a basis for future investigations into the design of efficient Massive MIMO systems, taking nonlinearities into account.</p>}},
  author       = {{Muneer, Sidra and Liu, Liang and Edfors, Ove and Sjoland, Henrik and Der Petre, Liesbet Van}},
  booktitle    = {{Conference Record of the 54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020}},
  editor       = {{Matthews, Michael B.}},
  isbn         = {{9780738131269}},
  issn         = {{1058-6393}},
  language     = {{eng}},
  month        = {{11}},
  pages        = {{974--978}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{Conference Record - Asilomar Conference on Signals, Systems and Computers}},
  title        = {{Handling PA Nonlinearity in Massive MIMO : What are the Tradeoffs between System Capacity and Power Consumption}},
  url          = {{http://dx.doi.org/10.1109/IEEECONF51394.2020.9443341}},
  doi          = {{10.1109/IEEECONF51394.2020.9443341}},
  volume       = {{2020-November}},
  year         = {{2020}},
}