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

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

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-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 languageEnglish
Title of host publication2011 Wireless Telecommunications Symposium (WTS)
PublisherInstitute of Electrical and Electronic Engineers IEEE
Pages1-6
ISBN (Electronic)978-1-4577-0161-0, 978-1-4577-0160-3
ISBN (Print)978-1-4577-0162-7
DOIs
Publication statusPublished - 2011
MoE publication typeA4 Article in a conference publication
EventWireless Telecommunications Symposium, WTS - New York, United States
Duration: 13 Apr 201115 Apr 2011

Publication series

Name
ISSN (Print)1934-5070
ISSN (Electronic)1934-5070

Conference

ConferenceWireless Telecommunications Symposium, WTS
Abbreviated titleWTS
CountryUnited States
CityNew York
Period13/04/1115/04/11

Fingerprint

Power amplifiers
Antennas
Power control
Orthogonal frequency division multiplexing

Keywords

  • power amplifier
  • average efficiency
  • power control
  • diversity
  • MIMO

Cite this

Apilo, O., Lasanen, M., Mämmelä, A., & Jondral, F. K. (2011). Average efficiency of power amplifiers in power-controlled systems with multi-antenna diversity. In 2011 Wireless Telecommunications Symposium (WTS) (pp. 1-6). Institute of Electrical and Electronic Engineers IEEE. https://doi.org/10.1109/WTS.2011.5960854
Apilo, Olli ; Lasanen, Mika ; Mämmelä, Aarne ; Jondral, Friedrich K. / Average efficiency of power amplifiers in power-controlled systems with multi-antenna diversity. 2011 Wireless Telecommunications Symposium (WTS). Institute of Electrical and Electronic Engineers IEEE, 2011. pp. 1-6
@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",
year = "2011",
doi = "10.1109/WTS.2011.5960854",
language = "English",
isbn = "978-1-4577-0162-7",
publisher = "Institute of Electrical and Electronic Engineers IEEE",
pages = "1--6",
booktitle = "2011 Wireless Telecommunications Symposium (WTS)",
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). Institute of Electrical and Electronic Engineers IEEE, pp. 1-6, Wireless Telecommunications Symposium, WTS, 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; Jondral, Friedrich K.

2011 Wireless Telecommunications Symposium (WTS). Institute of Electrical and Electronic Engineers IEEE, 2011. p. 1-6.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-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 - Institute of Electrical and Electronic Engineers IEEE

ER -

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