Publication detail

On the Sensitivity of Digital Predistortion to Impairments of Time-Interleaved A/D Converters

MARŠÁLEK, R. GÖTTHANS, T. HARVÁNEK, M. POLÁK, L.

Original Title

On the Sensitivity of Digital Predistortion to Impairments of Time-Interleaved A/D Converters

English Title

On the Sensitivity of Digital Predistortion to Impairments of Time-Interleaved A/D Converters

Type

conference paper

Language

en

Original Abstract

The need for high sampling rates in the feedback path of the digital adaptive predistortion for power amplifier linearization usually limits its use to the cases with sufficiently narrow bandwidth, that is contradictory to the envisaged signal bandwidth widening in the future communication systems. One of the solutions to relax the requirements on A/D converters in the predistortion system is to use them in a time-interleaved manner, but the imprecise time alignment, unequal gain or signal offset in the individual A/D sections may reduce the linearization performance. The goal of this paper is to investigate the potential effect of such impairments, present in the time-interleaved A/D conversion concept, to the performance of digital predistortion linearizer applied to typical filter-based multicarrier modulation.

English abstract

The need for high sampling rates in the feedback path of the digital adaptive predistortion for power amplifier linearization usually limits its use to the cases with sufficiently narrow bandwidth, that is contradictory to the envisaged signal bandwidth widening in the future communication systems. One of the solutions to relax the requirements on A/D converters in the predistortion system is to use them in a time-interleaved manner, but the imprecise time alignment, unequal gain or signal offset in the individual A/D sections may reduce the linearization performance. The goal of this paper is to investigate the potential effect of such impairments, present in the time-interleaved A/D conversion concept, to the performance of digital predistortion linearizer applied to typical filter-based multicarrier modulation.

Keywords

Linearization, predistortion, impairments, Ham- merstein predistorter, communications

Released

26.06.2018

ISBN

978-1-5386-2485-2

Book

Proceedings of 28th International Conference Radioelektronika

Pages from

1

Pages to

4

Pages count

4

BibTex


@inproceedings{BUT149700,
  author="Roman {Maršálek} and Tomáš {Götthans} and Michal {Harvánek} and Ladislav {Polák}",
  title="On the Sensitivity of Digital Predistortion to Impairments of Time-Interleaved A/D Converters",
  annote="The need for high sampling rates in the feedback path of the digital adaptive predistortion for power amplifier linearization usually limits its use to the cases with sufficiently narrow bandwidth, that is contradictory to the envisaged signal bandwidth widening in the future communication systems. One of the solutions to relax the requirements on A/D converters in the predistortion system is to use them in a time-interleaved manner, but the imprecise time alignment, unequal gain or signal offset in the individual A/D sections may reduce the  linearization performance. The goal of this paper is to investigate the potential effect of such impairments, present in the time-interleaved A/D conversion concept, to the performance of digital predistortion linearizer applied to typical filter-based multicarrier modulation.",
  booktitle="Proceedings of 28th International Conference Radioelektronika",
  chapter="149700",
  doi="10.1109/RADIOELEK.2018.8376377",
  howpublished="electronic, physical medium",
  year="2018",
  month="june",
  pages="1--4",
  type="conference paper"
}