---
_id: '9828'
abstract:
- lang: eng
  text: Amplitude demodulation is a classical operation used in signal processing.
    For a long time, its effective applications in practice have been limited to narrowband
    signals. In this work, we generalize amplitude demodulation to wideband signals.
    We pose demodulation as a recovery problem of an oversampled corrupted signal
    and introduce special iterative schemes belonging to the family of alternating
    projection algorithms to solve it. Sensibly chosen structural assumptions on the
    demodulation outputs allow us to reveal the high inferential accuracy of the method
    over a rich set of relevant signals. This new approach surpasses current state-of-the-art
    demodulation techniques apt to wideband signals in computational efficiency by
    up to many orders of magnitude with no sacrifice in quality. Such performance
    opens the door for applications of the amplitude demodulation procedure in new
    contexts. In particular, the new method makes online and large-scale offline data
    processing feasible, including the calculation of modulator-carrier pairs in higher
    dimensions and poor sampling conditions, independent of the signal bandwidth.
    We illustrate the utility and specifics of applications of the new method in practice
    by using natural speech and synthetic signals.
acknowledgement: The author thanks his colleagues K. Huszár and G. Tkačik for valuable
  discussions and comments on the manuscript.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Mantas
  full_name: Gabrielaitis, Mantas
  id: 4D5B0CBC-F248-11E8-B48F-1D18A9856A87
  last_name: Gabrielaitis
  orcid: 0000-0002-7758-2016
citation:
  ama: Gabrielaitis M. Fast and accurate amplitude demodulation of wideband signals.
    <i>IEEE Transactions on Signal Processing</i>. 2021;69:4039-4054. doi:<a href="https://doi.org/10.1109/TSP.2021.3087899">10.1109/TSP.2021.3087899</a>
  apa: Gabrielaitis, M. (2021). Fast and accurate amplitude demodulation of wideband
    signals. <i>IEEE Transactions on Signal Processing</i>. Institute of Electrical
    and Electronics Engineers. <a href="https://doi.org/10.1109/TSP.2021.3087899">https://doi.org/10.1109/TSP.2021.3087899</a>
  chicago: Gabrielaitis, Mantas. “Fast and Accurate Amplitude Demodulation of Wideband
    Signals.” <i>IEEE Transactions on Signal Processing</i>. Institute of Electrical
    and Electronics Engineers, 2021. <a href="https://doi.org/10.1109/TSP.2021.3087899">https://doi.org/10.1109/TSP.2021.3087899</a>.
  ieee: M. Gabrielaitis, “Fast and accurate amplitude demodulation of wideband signals,”
    <i>IEEE Transactions on Signal Processing</i>, vol. 69. Institute of Electrical
    and Electronics Engineers, pp. 4039–4054, 2021.
  ista: Gabrielaitis M. 2021. Fast and accurate amplitude demodulation of wideband
    signals. IEEE Transactions on Signal Processing. 69, 4039–4054.
  mla: Gabrielaitis, Mantas. “Fast and Accurate Amplitude Demodulation of Wideband
    Signals.” <i>IEEE Transactions on Signal Processing</i>, vol. 69, Institute of
    Electrical and Electronics Engineers, 2021, pp. 4039–54, doi:<a href="https://doi.org/10.1109/TSP.2021.3087899">10.1109/TSP.2021.3087899</a>.
  short: M. Gabrielaitis, IEEE Transactions on Signal Processing 69 (2021) 4039–4054.
corr_author: '1'
date_created: 2021-08-08T22:01:31Z
date_published: 2021-06-09T00:00:00Z
date_updated: 2024-10-09T21:00:43Z
day: '09'
department:
- _id: GaTk
doi: 10.1109/TSP.2021.3087899
external_id:
  arxiv:
  - '2102.04832'
  isi:
  - '000682123900002'
intvolume: '        69'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://arxiv.org/abs/2102.04832
month: '06'
oa: 1
oa_version: Preprint
page: 4039 - 4054
publication: IEEE Transactions on Signal Processing
publication_identifier:
  eissn:
  - 1941-0476
  issn:
  - 1053-587X
publication_status: published
publisher: Institute of Electrical and Electronics Engineers
quality_controlled: '1'
scopus_import: '1'
status: public
title: Fast and accurate amplitude demodulation of wideband signals
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 69
year: '2021'
...