Compensation of linear and nonlinear distortions in envelope tracking amplifier

Adrian Kotelba; Atso Hekkala; Mika Lasanen

doi:10.1109/PIMRC.2008.4699408

Compensation of linear and nonlinear distortions in envelope tracking amplifier

Adrian Kotelba
, Atso Hekkala
, Mika Lasanen

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

5 Citations (Scopus)

Abstract

This paper considers a problem of time-misalignment between envelope and RF signals in envelope-tracking amplifiers. We propose two novel time-misalignment compensation methods which are based on the concepts of self-tuning control and model reference control from adaptive control theory. The performance of proposed methods, which we measure by the achievable adjacent-channel power ratio, is compared to the performance of the state-of-the-art method. Simulation results suggest that the time-misalignment compensation which is based on self-tuning structure offers a comparable performance as the state-of-the-art method. On the other hand, the time-misalignment compensation which is based on model reference structure outperforms the state-of-the-art method by 20 dB on the average. Furthermore, compensation with model reference structure appears to be very robust to changes in system parameters. (10 refs.)

Original language	English
Title of host publication	19th International Symposium on Personal, Indoor and Mobile Radio Communications
Place of Publication	Piscataway, NJ, USA
Publisher	IEEE Institute of Electrical and Electronic Engineers
Pages	5
ISBN (Print)	978-1-4244-2643-0
DOIs	https://doi.org/10.1109/PIMRC.2008.4699408
Publication status	Published - 2008
MoE publication type	A4 Article in a conference publication
Event	19th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008 - Cannes, France Duration: 15 Sept 2008 → 18 Sept 2008

Conference

Conference	19th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008
Country/Territory	France
City	Cannes
Period	15/09/08 → 18/09/08

Keywords

adaptive predistortion
nonlinear effects
Wiener systems

Access to Document

10.1109/PIMRC.2008.4699408

Cite this

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title = "Compensation of linear and nonlinear distortions in envelope tracking amplifier",

abstract = "This paper considers a problem of time-misalignment between envelope and RF signals in envelope-tracking amplifiers. We propose two novel time-misalignment compensation methods which are based on the concepts of self-tuning control and model reference control from adaptive control theory. The performance of proposed methods, which we measure by the achievable adjacent-channel power ratio, is compared to the performance of the state-of-the-art method. Simulation results suggest that the time-misalignment compensation which is based on self-tuning structure offers a comparable performance as the state-of-the-art method. On the other hand, the time-misalignment compensation which is based on model reference structure outperforms the state-of-the-art method by 20 dB on the average. Furthermore, compensation with model reference structure appears to be very robust to changes in system parameters. (10 refs.)",

keywords = "adaptive predistortion, nonlinear effects, Wiener systems",

author = "Adrian Kotelba and Atso Hekkala and Mika Lasanen",

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booktitle = "19th International Symposium on Personal, Indoor and Mobile Radio Communications",

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

address = "United States",

note = "19th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008 ; Conference date: 15-09-2008 Through 18-09-2008",

}

Kotelba, A, Hekkala, A & Lasanen, M 2008, Compensation of linear and nonlinear distortions in envelope tracking amplifier. in 19th International Symposium on Personal, Indoor and Mobile Radio Communications. IEEE Institute of Electrical and Electronic Engineers, Piscataway, NJ, USA, pp. 5, 19th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008, Cannes, France, 15/09/08. https://doi.org/10.1109/PIMRC.2008.4699408

Compensation of linear and nonlinear distortions in envelope tracking amplifier. / Kotelba, Adrian; Hekkala, Atso; Lasanen, Mika.
19th International Symposium on Personal, Indoor and Mobile Radio Communications. Piscataway, NJ, USA: IEEE Institute of Electrical and Electronic Engineers, 2008. p. 5.

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

TY - GEN

T1 - Compensation of linear and nonlinear distortions in envelope tracking amplifier

AU - Kotelba, Adrian

AU - Hekkala, Atso

AU - Lasanen, Mika

PY - 2008

Y1 - 2008

N2 - This paper considers a problem of time-misalignment between envelope and RF signals in envelope-tracking amplifiers. We propose two novel time-misalignment compensation methods which are based on the concepts of self-tuning control and model reference control from adaptive control theory. The performance of proposed methods, which we measure by the achievable adjacent-channel power ratio, is compared to the performance of the state-of-the-art method. Simulation results suggest that the time-misalignment compensation which is based on self-tuning structure offers a comparable performance as the state-of-the-art method. On the other hand, the time-misalignment compensation which is based on model reference structure outperforms the state-of-the-art method by 20 dB on the average. Furthermore, compensation with model reference structure appears to be very robust to changes in system parameters. (10 refs.)

AB - This paper considers a problem of time-misalignment between envelope and RF signals in envelope-tracking amplifiers. We propose two novel time-misalignment compensation methods which are based on the concepts of self-tuning control and model reference control from adaptive control theory. The performance of proposed methods, which we measure by the achievable adjacent-channel power ratio, is compared to the performance of the state-of-the-art method. Simulation results suggest that the time-misalignment compensation which is based on self-tuning structure offers a comparable performance as the state-of-the-art method. On the other hand, the time-misalignment compensation which is based on model reference structure outperforms the state-of-the-art method by 20 dB on the average. Furthermore, compensation with model reference structure appears to be very robust to changes in system parameters. (10 refs.)

KW - adaptive predistortion

KW - nonlinear effects

KW - Wiener systems

U2 - 10.1109/PIMRC.2008.4699408

DO - 10.1109/PIMRC.2008.4699408

M3 - Conference article in proceedings

SN - 978-1-4244-2643-0

SP - 5

BT - 19th International Symposium on Personal, Indoor and Mobile Radio Communications

PB - IEEE Institute of Electrical and Electronic Engineers

CY - Piscataway, NJ, USA

T2 - 19th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2008

Y2 - 15 September 2008 through 18 September 2008

ER -

Compensation of linear and nonlinear distortions in envelope tracking amplifier

Abstract

Conference

Keywords

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Cite this