Adaptive time misalignment compensation in envelope tracking amplifiers

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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
PublisherIEEE Institute of Electrical and Electronic Engineers
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

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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  • 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). IEEE Institute of Electrical and Electronic Engineers. https://doi.org/10.1109/ISSSTA.2008.148