Unequal power amplifier dimensioning for adaptive massive MIMO base stations

Olli Apilo; Mika Lasanen; Aarne Mämmelä

doi:10.1109/VTCSpring.2016.7504517

Unequal power amplifier dimensioning for adaptive massive MIMO base stations

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

4 Citations (Scopus)

70 Downloads (Pure)

Abstract

In this paper, we propose a novel power amplifier (PA) dimensioning method for massive multiple-input multiple-output (MIMO) systems whose number of transmitting antennas is adapted according to the number of user equipments (UEs) in the cell. The dimensioning method sets the maximum output powers of PAs unequally according to the pre-calculated average per-antenna transmission powers for different number of UEs. This allows PAs to operate at higher efficiency when the average per-antenna transmission powers vary due to the adaptive number of transmitting antennas. The performance of the method is evaluated in the symmetric multi-cellular scenario using a comprehensive power consumption model that considers both base station and UEs. When simple class-B PAs are used at the base station, unequal PA dimensioning reduces the PA power consumption up to 42 % when compared to the conventional equal PA dimensioning. This improves the total system energy efficiency. The benefits of the proposed unequal PA dimensioning are that no prior knowledge of the UE distribution is needed and good performance is achieved for all UE densities.

Original language	English
Title of host publication	Proceedings
Subtitle of host publication	2016 IEEE 83rd Vehicular Technology Conference (VTC Spring)
Publisher	IEEE Institute of Electrical and Electronic Engineers
Number of pages	6
ISBN (Electronic)	978-1-5090-1698-3
ISBN (Print)	978-1-5090-1699-0
DOIs	https://doi.org/10.1109/VTCSpring.2016.7504517
Publication status	Published - 7 Jul 2016
MoE publication type	A4 Article in a conference publication
Event	IEEE Vehicular Technology Conference - Nanjing, China Duration: 15 May 2016 → 18 May 2016 Conference number: 83

Conference

Conference	IEEE Vehicular Technology Conference
Abbreviated title	VTC Spring
Country	China
City	Nanjing
Period	15/05/16 → 18/05/16

Keywords

antennas
base stations
electric power utilization
energy efficiency
MIMO systems
telecommunication networks
higher efficiency
massive multiple-input- multiple-output system (MIMO)
maximum output
per antennas
power consumption model
prior knowledge
transmitting antenna
user equipments

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10.1109/VTCSpring.2016.7504517

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Cite this

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title = "Unequal power amplifier dimensioning for adaptive massive MIMO base stations",

abstract = "In this paper, we propose a novel power amplifier (PA) dimensioning method for massive multiple-input multiple-output (MIMO) systems whose number of transmitting antennas is adapted according to the number of user equipments (UEs) in the cell. The dimensioning method sets the maximum output powers of PAs unequally according to the pre-calculated average per-antenna transmission powers for different number of UEs. This allows PAs to operate at higher efficiency when the average per-antenna transmission powers vary due to the adaptive number of transmitting antennas. The performance of the method is evaluated in the symmetric multi-cellular scenario using a comprehensive power consumption model that considers both base station and UEs. When simple class-B PAs are used at the base station, unequal PA dimensioning reduces the PA power consumption up to 42 % when compared to the conventional equal PA dimensioning. This improves the total system energy efficiency. The benefits of the proposed unequal PA dimensioning are that no prior knowledge of the UE distribution is needed and good performance is achieved for all UE densities.",

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Unequal power amplifier dimensioning for adaptive massive MIMO base stations. / Apilo, Olli ; Lasanen, Mika ; Mämmelä, Aarne.

Proceedings : 2016 IEEE 83rd Vehicular Technology Conference (VTC Spring). IEEE Institute of Electrical and Electronic Engineers, 2016.

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

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N2 - In this paper, we propose a novel power amplifier (PA) dimensioning method for massive multiple-input multiple-output (MIMO) systems whose number of transmitting antennas is adapted according to the number of user equipments (UEs) in the cell. The dimensioning method sets the maximum output powers of PAs unequally according to the pre-calculated average per-antenna transmission powers for different number of UEs. This allows PAs to operate at higher efficiency when the average per-antenna transmission powers vary due to the adaptive number of transmitting antennas. The performance of the method is evaluated in the symmetric multi-cellular scenario using a comprehensive power consumption model that considers both base station and UEs. When simple class-B PAs are used at the base station, unequal PA dimensioning reduces the PA power consumption up to 42 % when compared to the conventional equal PA dimensioning. This improves the total system energy efficiency. The benefits of the proposed unequal PA dimensioning are that no prior knowledge of the UE distribution is needed and good performance is achieved for all UE densities.

AB - In this paper, we propose a novel power amplifier (PA) dimensioning method for massive multiple-input multiple-output (MIMO) systems whose number of transmitting antennas is adapted according to the number of user equipments (UEs) in the cell. The dimensioning method sets the maximum output powers of PAs unequally according to the pre-calculated average per-antenna transmission powers for different number of UEs. This allows PAs to operate at higher efficiency when the average per-antenna transmission powers vary due to the adaptive number of transmitting antennas. The performance of the method is evaluated in the symmetric multi-cellular scenario using a comprehensive power consumption model that considers both base station and UEs. When simple class-B PAs are used at the base station, unequal PA dimensioning reduces the PA power consumption up to 42 % when compared to the conventional equal PA dimensioning. This improves the total system energy efficiency. The benefits of the proposed unequal PA dimensioning are that no prior knowledge of the UE distribution is needed and good performance is achieved for all UE densities.

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KW - electric power utilization

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KW - MIMO systems

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KW - maximum output

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