Publication detail

Orthogonal Time Frequency Space Modulation: Pilot Power Allocation and Nonlinear Power Amplifiers

MARŠÁLEK, R. BLUMENSTEIN, J. PROKEŠ, A. GÖTTHANS, T.

Original Title

Orthogonal Time Frequency Space Modulation: Pilot Power Allocation and Nonlinear Power Amplifiers

English Title

Orthogonal Time Frequency Space Modulation: Pilot Power Allocation and Nonlinear Power Amplifiers

Type

conference paper

Language

en

Original Abstract

This paper deals with a pilot power allocation in the orthogonal time-frequency space (OTFS) modulation system. In our simulations, the pilot is used for a channel estimation. Subsequently, the channel effects are equalized via a deconvolution. It is shown that proper solution of the pilot power allocation problem has significant impact on the bit-error rates. We also show that the increase of the pilot power causes notable increase of the peak-to-average (PAPR) power ratio. In consequence, high PAPR is one of the limiting factors of the pilot power increase. Considering a non-linear power amplifier, high PAPR is demonstrated to limit the OTFS bit-error rate performance.

English abstract

This paper deals with a pilot power allocation in the orthogonal time-frequency space (OTFS) modulation system. In our simulations, the pilot is used for a channel estimation. Subsequently, the channel effects are equalized via a deconvolution. It is shown that proper solution of the pilot power allocation problem has significant impact on the bit-error rates. We also show that the increase of the pilot power causes notable increase of the peak-to-average (PAPR) power ratio. In consequence, high PAPR is one of the limiting factors of the pilot power increase. Considering a non-linear power amplifier, high PAPR is demonstrated to limit the OTFS bit-error rate performance.

Keywords

5G and beyond; OTFS; power amplifier nonlinearity; 2D spreading; power allocation

Released

10.12.2019

ISBN

978-1-7281-5341-4

Book

Proceedings of 19th IEEE Symposium on Signal Processing and Information Technology (ISSPIT) 2019

Pages from

1

Pages to

4

Pages count

4

BibTex


@inproceedings{BUT159858,
  author="Roman {Maršálek} and Jiří {Blumenstein} and Aleš {Prokeš} and Tomáš {Götthans}",
  title="Orthogonal Time Frequency Space Modulation: Pilot Power Allocation and Nonlinear Power Amplifiers",
  annote="This paper deals with a pilot power allocation in the orthogonal time-frequency space (OTFS) modulation system. In our simulations, the pilot is used for a channel estimation. Subsequently, the channel effects are equalized via a deconvolution. It is shown that proper solution of the pilot power allocation problem has significant impact on the bit-error rates. We also show that the increase of the pilot power causes notable increase of the peak-to-average (PAPR) power ratio. In consequence, high PAPR is one of the limiting factors of the pilot power increase. Considering a non-linear power amplifier, high PAPR is demonstrated to limit the OTFS bit-error rate performance.",
  booktitle="Proceedings of 19th IEEE Symposium on Signal Processing and Information Technology (ISSPIT) 2019",
  chapter="159858",
  howpublished="online",
  year="2019",
  month="december",
  pages="1--4",
  type="conference paper"
}