Exponential companding and active constellation extension comparisons for PAPR reduction

Atso Hekkala; Sandrine Boumard; Mika Lasanen

doi:10.1109/ITC.2014.6932969

Exponential companding and active constellation extension comparisons for PAPR reduction

Atso Hekkala, Sandrine Boumard, Mika Lasanen

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

2 Citations (Scopus)

Abstract

One of the major drawbacks of the orthogonal frequency division multiplexing (OFDM) type of communication is the high peak-to-average power ratio (PAPR) of the transmitted signal. Unless carefully tackled, this may cause either reduced energy efficiency or increased nonlinear distortion when the signal is amplified for transmission. For improving energy efficiency, this paper considers PAPR reduction in OFDM based systems. In particular, we study and compare some PAPR reduction approaches including three exponential companding and active constellation extension (ACE) methods. We discuss the trade-offs of the methods. In addition, for the ACE method defined in the ETSI standard, we propose some modifications that give about 1 dB more PAPR reduction without any additional power increase of the transmitted signal. Moreover, if some spectral regrowth due to the PAPR reduction is acceptable, exponential companding approaches can also be used.

Original language	English
Title of host publication	Proceedings
Subtitle of host publication	26th International Teletraffic Congress, ITC 26, 2014
Publisher	IEEE Institute of Electrical and Electronic Engineers
Number of pages	5
ISBN (Electronic)	978-0-9883045-0-5
DOIs	https://doi.org/10.1109/ITC.2014.6932969
Publication status	Published - 2014
MoE publication type	A4 Article in a conference publication
Event	26th International Teletraffic Congress, ITC 26 - Karlskrona, Sweden Duration: 9 Sep 2014 → 11 Sep 2014 Conference number: 26th

Conference

Conference	26th International Teletraffic Congress, ITC 26
Abbreviated title	ITC 26
Country	Sweden
City	Karlskrona
Period	9/09/14 → 11/09/14

Keywords

ACE
active constellation extension
exponential companding
OFDM
peak-to-average power ratio

UN SDGs

This output contributes to the following Sustainable Development Goal(s)

Access to Document

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title = "Exponential companding and active constellation extension comparisons for PAPR reduction",

abstract = "One of the major drawbacks of the orthogonal frequency division multiplexing (OFDM) type of communication is the high peak-to-average power ratio (PAPR) of the transmitted signal. Unless carefully tackled, this may cause either reduced energy efficiency or increased nonlinear distortion when the signal is amplified for transmission. For improving energy efficiency, this paper considers PAPR reduction in OFDM based systems. In particular, we study and compare some PAPR reduction approaches including three exponential companding and active constellation extension (ACE) methods. We discuss the trade-offs of the methods. In addition, for the ACE method defined in the ETSI standard, we propose some modifications that give about 1 dB more PAPR reduction without any additional power increase of the transmitted signal. Moreover, if some spectral regrowth due to the PAPR reduction is acceptable, exponential companding approaches can also be used.",

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language = "English",

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Hekkala, A, Boumard, S & Lasanen, M 2014, Exponential companding and active constellation extension comparisons for PAPR reduction. in Proceedings: 26th International Teletraffic Congress, ITC 26, 2014. IEEE Institute of Electrical and Electronic Engineers, 26th International Teletraffic Congress, ITC 26, Karlskrona, Sweden, 9/09/14. https://doi.org/10.1109/ITC.2014.6932969

Exponential companding and active constellation extension comparisons for PAPR reduction. / Hekkala, Atso; Boumard, Sandrine ; Lasanen, Mika.

Proceedings: 26th International Teletraffic Congress, ITC 26, 2014. IEEE Institute of Electrical and Electronic Engineers, 2014.

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

TY - GEN

T1 - Exponential companding and active constellation extension comparisons for PAPR reduction

AU - Hekkala, Atso

AU - Boumard, Sandrine

AU - Lasanen, Mika

N1 - Conference code: 26th

PY - 2014

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N2 - One of the major drawbacks of the orthogonal frequency division multiplexing (OFDM) type of communication is the high peak-to-average power ratio (PAPR) of the transmitted signal. Unless carefully tackled, this may cause either reduced energy efficiency or increased nonlinear distortion when the signal is amplified for transmission. For improving energy efficiency, this paper considers PAPR reduction in OFDM based systems. In particular, we study and compare some PAPR reduction approaches including three exponential companding and active constellation extension (ACE) methods. We discuss the trade-offs of the methods. In addition, for the ACE method defined in the ETSI standard, we propose some modifications that give about 1 dB more PAPR reduction without any additional power increase of the transmitted signal. Moreover, if some spectral regrowth due to the PAPR reduction is acceptable, exponential companding approaches can also be used.

AB - One of the major drawbacks of the orthogonal frequency division multiplexing (OFDM) type of communication is the high peak-to-average power ratio (PAPR) of the transmitted signal. Unless carefully tackled, this may cause either reduced energy efficiency or increased nonlinear distortion when the signal is amplified for transmission. For improving energy efficiency, this paper considers PAPR reduction in OFDM based systems. In particular, we study and compare some PAPR reduction approaches including three exponential companding and active constellation extension (ACE) methods. We discuss the trade-offs of the methods. In addition, for the ACE method defined in the ETSI standard, we propose some modifications that give about 1 dB more PAPR reduction without any additional power increase of the transmitted signal. Moreover, if some spectral regrowth due to the PAPR reduction is acceptable, exponential companding approaches can also be used.

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KW - exponential companding

KW - OFDM

KW - peak-to-average power ratio

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DO - 10.1109/ITC.2014.6932969

M3 - Conference article in proceedings

BT - Proceedings

PB - IEEE Institute of Electrical and Electronic Engineers

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Y2 - 9 September 2014 through 11 September 2014

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