Average efficiency of power amplifiers in power-controlled systems with multi-antenna diversity

Olli Apilo; Mika Lasanen; Aarne Mämmelä; Friedrich K. Jondral

doi:10.1109/WTS.2011.5960854

Average efficiency of power amplifiers in power-controlled systems with multi-antenna diversity

Olli Apilo, Mika Lasanen, Aarne Mämmelä, Friedrich K. Jondral

Karlsruhe Institute of Technology (KIT)

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

1 Citation (Scopus)

Abstract

We present a study of average efficiency of power amplifiers (PAs) in power-controlled systems with multi-antenna diversity. The efficiencies are analytically calculated using the transmitted power distributions. Several well-known multiple-input multiple-output (MIMO) diversity techniques, power control rules, PA classes, and channel models are considered. The considered diversity techniques are maximum ratio combining, selection combining, transmitting antenna selection, and maximum ratio transmission. Also the probability of an OFDM symbol clipping caused by PA saturation is calculated for the system under study. The analytical results are verified using Monte Carlo simulations. The study shows that the input signal distribution, diversity techniques, and the power control cut-off value have a significant effect on the average PA efficiency. The highest average PA efficiency is achieved when input signal has constant amplitude and selection combining is used. The presented results can be applied for an arbitrary PA e.g. when comparing the efficiency of different PAs

Original language	English
Title of host publication	2011 Wireless Telecommunications Symposium (WTS)
Publisher	IEEE Institute of Electrical and Electronic Engineers
Pages	1-6
ISBN (Electronic)	978-1-4577-0161-0, 978-1-4577-0160-3
ISBN (Print)	978-1-4577-0162-7
DOIs	https://doi.org/10.1109/WTS.2011.5960854
Publication status	Published - 2011
MoE publication type	A4 Article in a conference publication
Event	Wireless Telecommunications Symposium, WTS - New York, United States Duration: 13 Apr 2011 → 15 Apr 2011

Conference

Conference	Wireless Telecommunications Symposium, WTS
Abbreviated title	WTS
Country/Territory	United States
City	New York
Period	13/04/11 → 15/04/11

Keywords

power amplifier
average efficiency
power control
diversity
MIMO

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10.1109/WTS.2011.5960854

Cite this

@inproceedings{b55695c654424cd4bfba8a6bb19b72fc,

title = "Average efficiency of power amplifiers in power-controlled systems with multi-antenna diversity",

abstract = "We present a study of average efficiency of power amplifiers (PAs) in power-controlled systems with multi-antenna diversity. The efficiencies are analytically calculated using the transmitted power distributions. Several well-known multiple-input multiple-output (MIMO) diversity techniques, power control rules, PA classes, and channel models are considered. The considered diversity techniques are maximum ratio combining, selection combining, transmitting antenna selection, and maximum ratio transmission. Also the probability of an OFDM symbol clipping caused by PA saturation is calculated for the system under study. The analytical results are verified using Monte Carlo simulations. The study shows that the input signal distribution, diversity techniques, and the power control cut-off value have a significant effect on the average PA efficiency. The highest average PA efficiency is achieved when input signal has constant amplitude and selection combining is used. The presented results can be applied for an arbitrary PA e.g. when comparing the efficiency of different PAs",

keywords = "power amplifier, average efficiency, power control, diversity, MIMO",

author = "Olli Apilo and Mika Lasanen and Aarne M{\"a}mmel{\"a} and Jondral, {Friedrich K.}",

note = "Project code: 71080; Wireless Telecommunications Symposium, WTS, WTS ; Conference date: 13-04-2011 Through 15-04-2011",

year = "2011",

doi = "10.1109/WTS.2011.5960854",

language = "English",

isbn = "978-1-4577-0162-7",

pages = "1--6",

booktitle = "2011 Wireless Telecommunications Symposium (WTS)",

publisher = "IEEE Institute of Electrical and Electronic Engineers",

address = "United States",

}

Apilo, O , Lasanen, M, Mämmelä, A & Jondral, FK 2011, Average efficiency of power amplifiers in power-controlled systems with multi-antenna diversity. in 2011 Wireless Telecommunications Symposium (WTS). IEEE Institute of Electrical and Electronic Engineers, pp. 1-6, Wireless Telecommunications Symposium, WTS, New York, New York, United States, 13/04/11. https://doi.org/10.1109/WTS.2011.5960854

Average efficiency of power amplifiers in power-controlled systems with multi-antenna diversity. / Apilo, Olli ; Lasanen, Mika; Mämmelä, Aarne et al.
2011 Wireless Telecommunications Symposium (WTS). IEEE Institute of Electrical and Electronic Engineers, 2011. p. 1-6.

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

TY - GEN

T1 - Average efficiency of power amplifiers in power-controlled systems with multi-antenna diversity

AU - Apilo, Olli

AU - Lasanen, Mika

AU - Mämmelä, Aarne

AU - Jondral, Friedrich K.

N1 - Project code: 71080

PY - 2011

Y1 - 2011

N2 - We present a study of average efficiency of power amplifiers (PAs) in power-controlled systems with multi-antenna diversity. The efficiencies are analytically calculated using the transmitted power distributions. Several well-known multiple-input multiple-output (MIMO) diversity techniques, power control rules, PA classes, and channel models are considered. The considered diversity techniques are maximum ratio combining, selection combining, transmitting antenna selection, and maximum ratio transmission. Also the probability of an OFDM symbol clipping caused by PA saturation is calculated for the system under study. The analytical results are verified using Monte Carlo simulations. The study shows that the input signal distribution, diversity techniques, and the power control cut-off value have a significant effect on the average PA efficiency. The highest average PA efficiency is achieved when input signal has constant amplitude and selection combining is used. The presented results can be applied for an arbitrary PA e.g. when comparing the efficiency of different PAs

AB - We present a study of average efficiency of power amplifiers (PAs) in power-controlled systems with multi-antenna diversity. The efficiencies are analytically calculated using the transmitted power distributions. Several well-known multiple-input multiple-output (MIMO) diversity techniques, power control rules, PA classes, and channel models are considered. The considered diversity techniques are maximum ratio combining, selection combining, transmitting antenna selection, and maximum ratio transmission. Also the probability of an OFDM symbol clipping caused by PA saturation is calculated for the system under study. The analytical results are verified using Monte Carlo simulations. The study shows that the input signal distribution, diversity techniques, and the power control cut-off value have a significant effect on the average PA efficiency. The highest average PA efficiency is achieved when input signal has constant amplitude and selection combining is used. The presented results can be applied for an arbitrary PA e.g. when comparing the efficiency of different PAs

KW - power amplifier

KW - average efficiency

KW - power control

KW - diversity

KW - MIMO

U2 - 10.1109/WTS.2011.5960854

DO - 10.1109/WTS.2011.5960854

M3 - Conference article in proceedings

SN - 978-1-4577-0162-7

SP - 1

EP - 6

BT - 2011 Wireless Telecommunications Symposium (WTS)

PB - IEEE Institute of Electrical and Electronic Engineers

T2 - Wireless Telecommunications Symposium, WTS

Y2 - 13 April 2011 through 15 April 2011

ER -

Average efficiency of power amplifiers in power-controlled systems with multi-antenna diversity

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Conference

Keywords

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