Towards a video-capable wireless underwater modem: Doppler tolerant broadband acoustic communication

Thomas Riedl, Andrew Singer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Current wireless underwater modems are advertised with data rates of only a few kbps and the oil and gas industry has found them incapable of handling video and real-time control. Today, such communication underwater is almost entirely done through wired links. Using broadband acoustic signals with a bandwidth of 200kHz and more, we demonstrate the feasibility of wireless underwater communication at data rates greater than 1Mbps. Such data rates are capable of streaming video in real-time. As broadband acoustic signals propagate through water, they suffer extreme Doppler effects. Different propagation paths experience different Doppler and the level of Doppler on each path is highly time-variant. In our work, time-varying Doppler is explicitly modeled, tracked and compensated. In this paper, we provide the results from our acoustic communication experiments conducted in a 50m long wave tank. Our resampling equalizer reliably achieved 1.2Mbps over a distance of 12m.

Original languageEnglish (US)
Title of host publication2014 Underwater Communications and Networking, UComms 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479975785
DOIs
StatePublished - Jan 20 2014
Event2014 Underwater Communications and Networking, UComms 2014 - Sestri Levante, Italy
Duration: Sep 3 2014Sep 5 2014

Publication series

Name2014 Underwater Communications and Networking, UComms 2014

Other

Other2014 Underwater Communications and Networking, UComms 2014
CountryItaly
CitySestri Levante
Period9/3/149/5/14

Keywords

  • Doppler compensation
  • Doppler effect
  • Underwater acoustic communication
  • Video

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Software

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