Adaptive time misalignment compensation in envelope tracking amplifiers

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-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 languageEnglish
Title of host publication2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications
PublisherInstitute of Electrical and Electronic Engineers IEEE
Pages761-765
ISBN (Print)978-1-4244-2204-3
DOIs
Publication statusPublished - 2008
MoE publication typeA4 Article in a conference publication
Event2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA - Bologna, Italy
Duration: 25 Aug 200828 Aug 2008
Conference number: 10

Publication series

Name
ISSN (Print)1943-7439
ISSN (Electronic)1943-7447

Conference

Conference2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications, ISSSTA
Abbreviated titleISSSTA
CountryItaly
CityBologna
Period25/08/0828/08/08

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Degradation
Compensation and Redress

Cite this

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 (pp. 761-765). Institute of Electrical and Electronic Engineers IEEE. https://doi.org/10.1109/ISSSTA.2008.148
Hekkala, Atso ; Lasanen, Mika ; Kotelba, Adrian. / Adaptive time misalignment compensation in envelope tracking amplifiers. 2008 IEEE 10th International Symposium on Spread Spectrum Techniques and Applications. Institute of Electrical and Electronic Engineers IEEE, 2008. pp. 761-765
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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.",
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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. Institute of Electrical and Electronic Engineers IEEE, 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. Institute of Electrical and Electronic Engineers IEEE, 2008. p. 761-765.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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