Handling PA Nonlinearity in Massive MIMO : What are the Tradeoffs between System Capacity and Power Consumption
(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.
(Less)
- author
- Muneer, Sidra LU ; Liu, Liang LU ; Edfors, Ove LU ; Sjoland, Henrik LU and Der Petre, Liesbet Van
- organization
- publishing date
- 2020-11-01
- 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}}, }