Adaptive time misalignment compensation in envelope tracking amplifiers

Atso Hekkala; Mika Lasanen; Adrian Kotelba

doi:10.1109/ISSSTA.2008.148

Adaptive time misalignment compensation in envelope tracking amplifiers

Atso Hekkala, Mika Lasanen, Adrian Kotelba

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

3 Citations (Scopus)

Abstract

This paper considers the compensation of time misalignment between RF and envelope signals of envelope tracking (ET) amplifier. In particular, we propose methods to compensate the time misalignment and compare them to a previously presented method. Our simulation results indicate that the proposed methods give very accurate timing estimates. In the presence of optimal predistorter, we achieve with 90 percent probability adjacent channel power (ACP) level of -80 dB. With adaptive predistorters, we cannot see any degradation of ACP comparing to case of ideal timing. On the other hand, the proposed methods give roughly 10 dB better ACP than the previously presented method.

Original language	English
Title of host publication	2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications
Publisher	IEEE Institute of Electrical and Electronic Engineers
Pages	761-765
ISBN (Print)	978-1-4244-2204-3
DOIs	https://doi.org/10.1109/ISSSTA.2008.148
Publication status	Published - 2008
MoE publication type	A4 Article in a conference publication
Event	2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA - Bologna, Italy Duration: 25 Aug 2008 → 28 Aug 2008 Conference number: 10

Conference

Conference	2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA
Abbreviated title	ISSSTA
Country/Territory	Italy
City	Bologna
Period	25/08/08 → 28/08/08

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10.1109/ISSSTA.2008.148

Cite this

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title = "Adaptive time misalignment compensation in envelope tracking amplifiers",

abstract = "This paper considers the compensation of time misalignment between RF and envelope signals of envelope tracking (ET) amplifier. In particular, we propose methods to compensate the time misalignment and compare them to a previously presented method. Our simulation results indicate that the proposed methods give very accurate timing estimates. In the presence of optimal predistorter, we achieve with 90 percent probability adjacent channel power (ACP) level of -80 dB. With adaptive predistorters, we cannot see any degradation of ACP comparing to case of ideal timing. On the other hand, the proposed methods give roughly 10 dB better ACP than the previously presented method.",

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

year = "2008",

doi = "10.1109/ISSSTA.2008.148",

language = "English",

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booktitle = "2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications",

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address = "United States",

note = "2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA, ISSSTA ; Conference date: 25-08-2008 Through 28-08-2008",

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Hekkala, A, Lasanen, M & Kotelba, A 2008, Adaptive time misalignment compensation in envelope tracking amplifiers. in 2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications. IEEE Institute of Electrical and Electronic Engineers, pp. 761-765, 2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA, Bologna, Italy, 25/08/08. https://doi.org/10.1109/ISSSTA.2008.148

Adaptive time misalignment compensation in envelope tracking amplifiers. / Hekkala, Atso; Lasanen, Mika; Kotelba, Adrian.
2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications. IEEE Institute of Electrical and Electronic Engineers, 2008. p. 761-765.

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

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AU - Hekkala, Atso

AU - Lasanen, Mika

AU - Kotelba, Adrian

N1 - Conference code: 10

PY - 2008

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N2 - This paper considers the compensation of time misalignment between RF and envelope signals of envelope tracking (ET) amplifier. In particular, we propose methods to compensate the time misalignment and compare them to a previously presented method. Our simulation results indicate that the proposed methods give very accurate timing estimates. In the presence of optimal predistorter, we achieve with 90 percent probability adjacent channel power (ACP) level of -80 dB. With adaptive predistorters, we cannot see any degradation of ACP comparing to case of ideal timing. On the other hand, the proposed methods give roughly 10 dB better ACP than the previously presented method.

AB - This paper considers the compensation of time misalignment between RF and envelope signals of envelope tracking (ET) amplifier. In particular, we propose methods to compensate the time misalignment and compare them to a previously presented method. Our simulation results indicate that the proposed methods give very accurate timing estimates. In the presence of optimal predistorter, we achieve with 90 percent probability adjacent channel power (ACP) level of -80 dB. With adaptive predistorters, we cannot see any degradation of ACP comparing to case of ideal timing. On the other hand, the proposed methods give roughly 10 dB better ACP than the previously presented method.

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DO - 10.1109/ISSSTA.2008.148

M3 - Conference article in proceedings

SN - 978-1-4244-2204-3

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EP - 765

BT - 2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications

PB - IEEE Institute of Electrical and Electronic Engineers

T2 - 2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA

Y2 - 25 August 2008 through 28 August 2008

ER -

Adaptive time misalignment compensation in envelope tracking amplifiers

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