Experimental results with HF underwater acoustic modem for high bandwidth applications

James Younce, Andrew Singer, Thomas Riedl, Blake Landry, Andrew Bean, Toros Arikan

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

Abstract

We present a robust, video-capable modem designed for wireless underwater acoustic communication. The difficult nature of the underwater acoustic channel necessitates explicit Doppler compensation and mitigation of severe multipath. Due to the relatively low propagation speed of sound in water, platform mobility causes severe Doppler that cannot be treated as in RF wireless communicaiton, as a frequency shift or through a global rescaling. We model the underwater acoustic channel with explicit time-varying Doppler and multipath, and derive the turbo resampling equalizer (TRE) that tracks and mitigates these phenomena. Building on previous work, we demonstate experimental results achieving data rates in excess of 1 Mbps over 100 m in shallow water, and successfully transmit live video over a 5 m underwater acoustic channel from a rapidly moving transmitter with speeds in excess of 3 m/s and accelerations in excess of 7m/s2.

Original languageEnglish (US)
Title of host publicationConference Record of the 49th Asilomar Conference on Signals, Systems and Computers, ACSSC 2015
EditorsMichael B. Matthews
PublisherIEEE Computer Society
Pages248-252
Number of pages5
ISBN (Electronic)9781467385763
DOIs
StatePublished - Feb 26 2016
Event49th Asilomar Conference on Signals, Systems and Computers, ACSSC 2015 - Pacific Grove, United States
Duration: Nov 8 2015Nov 11 2015

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
Volume2016-February
ISSN (Print)1058-6393

Other

Other49th Asilomar Conference on Signals, Systems and Computers, ACSSC 2015
CountryUnited States
CityPacific Grove
Period11/8/1511/11/15

ASJC Scopus subject areas

  • Signal Processing
  • Computer Networks and Communications

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