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Iterative-detection–based time-domain adaptive decision feedback equalization for continuous phase modulation of underwater acoustic communication.

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Title: Iterative-detection–based time-domain adaptive decision feedback equalization for continuous phase modulation of underwater acoustic communication.
Authors: Han, Ruigang1,2,3 (AUTHOR), Jia, Ning1,2,3 (AUTHOR) jianing@mail.ioa.ac.cn, Li, Yunfei1,2,3 (AUTHOR), Xiao, Dong1,2,3 (AUTHOR), Guo, Shengming1,2,3 (AUTHOR), Ma, Li1,2,3 (AUTHOR)
Source: Journal of the Acoustical Society of America. Mar2025, Vol. 157 Issue 3, p1912-1925. 14p.
Subjects: Decision feedback equalizers, Continuous phase modulation, Telecommunication systems, Underwater acoustic communication, Satellite telemetry
Abstract: Continuous phase modulation (CPM), which is widely used in aviation telemetry and satellite communications, may help improve the performance of underwater acoustic (UWA) communication systems owing to its high spectral and power efficiency. However, applying conventional frequency-domain equalization (FDE) algorithms to CPM signals over time-varying UWA channels considerably degrades performance. Moreover, time-domain equalization algorithms often rely on excessive approximations for symbol detection, compromising overall reception. This study presents an iterative-detection–based time-domain adaptive decision feedback equalization (ID-TDADFE) algorithm that tracks channel variations through symbol-by-symbol detection. The symbol detection in ID-TDADFE fully considers the inherent coding gain of CPM signals can be cascaded with an adaptive equalizer, and enhances symbol detection performance by utilizing joint probability estimation. Numerical simulations with minimum-shift keying (MSK) and Gaussian MSK signals demonstrated that ID-TDADFE significantly improved communication performance over a time-varying UWA channel within one or two iterations. In a sea trial for experimental verification, ID-TDADFE reduced bit errors by 45.08% and 51.8% in the first and second iterations, respectively, compared to FDE. [ABSTRACT FROM AUTHOR]
Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 184139231
AccessLevel: 6
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PubTypeId: academicJournal
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  Label: Title
  Group: Ti
  Data: Iterative-detection–based time-domain adaptive decision feedback equalization for continuous phase modulation of underwater acoustic communication.
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  Data: <searchLink fieldCode="AR" term="%22Han%2C+Ruigang%22">Han, Ruigang</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jia%2C+Ning%22">Jia, Ning</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> jianing@mail.ioa.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Li%2C+Yunfei%22">Li, Yunfei</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xiao%2C+Dong%22">Xiao, Dong</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Guo%2C+Shengming%22">Guo, Shengming</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ma%2C+Li%22">Ma, Li</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+the+Acoustical+Society+of+America%22">Journal of the Acoustical Society of America</searchLink>. Mar2025, Vol. 157 Issue 3, p1912-1925. 14p.
– Name: Subject
  Label: Subjects
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  Data: <searchLink fieldCode="DE" term="%22Decision+feedback+equalizers%22">Decision feedback equalizers</searchLink><br /><searchLink fieldCode="DE" term="%22Continuous+phase+modulation%22">Continuous phase modulation</searchLink><br /><searchLink fieldCode="DE" term="%22Telecommunication+systems%22">Telecommunication systems</searchLink><br /><searchLink fieldCode="DE" term="%22Underwater+acoustic+communication%22">Underwater acoustic communication</searchLink><br /><searchLink fieldCode="DE" term="%22Satellite+telemetry%22">Satellite telemetry</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Continuous phase modulation (CPM), which is widely used in aviation telemetry and satellite communications, may help improve the performance of underwater acoustic (UWA) communication systems owing to its high spectral and power efficiency. However, applying conventional frequency-domain equalization (FDE) algorithms to CPM signals over time-varying UWA channels considerably degrades performance. Moreover, time-domain equalization algorithms often rely on excessive approximations for symbol detection, compromising overall reception. This study presents an iterative-detection–based time-domain adaptive decision feedback equalization (ID-TDADFE) algorithm that tracks channel variations through symbol-by-symbol detection. The symbol detection in ID-TDADFE fully considers the inherent coding gain of CPM signals can be cascaded with an adaptive equalizer, and enhances symbol detection performance by utilizing joint probability estimation. Numerical simulations with minimum-shift keying (MSK) and Gaussian MSK signals demonstrated that ID-TDADFE significantly improved communication performance over a time-varying UWA channel within one or two iterations. In a sea trial for experimental verification, ID-TDADFE reduced bit errors by 45.08% and 51.8% in the first and second iterations, respectively, compared to FDE. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of the Acoustical Society of America is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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        Value: 10.1121/10.0036145
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      – Code: eng
        Text: English
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      Pagination:
        PageCount: 14
        StartPage: 1912
    Subjects:
      – SubjectFull: Decision feedback equalizers
        Type: general
      – SubjectFull: Continuous phase modulation
        Type: general
      – SubjectFull: Telecommunication systems
        Type: general
      – SubjectFull: Underwater acoustic communication
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      – SubjectFull: Satellite telemetry
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      – TitleFull: Iterative-detection–based time-domain adaptive decision feedback equalization for continuous phase modulation of underwater acoustic communication.
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            NameFull: Han, Ruigang
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            NameFull: Jia, Ning
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            NameFull: Li, Yunfei
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            NameFull: Xiao, Dong
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            NameFull: Guo, Shengming
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            – D: 01
              M: 03
              Text: Mar2025
              Type: published
              Y: 2025
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