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Turbo-coded frequency division multiplexing for underwater acoustic communications between 60 kHz and 90 kHz

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Date Issued:
2009
Summary:
The Intermediate Frequency Acoustic Modem (IFAM), developed by Dr. Beaujean, is designed to transmit the command-and-control messages from the top-side to the wet-side unit in ports and very shallow waters. This research presents the design of the turbo coding scheme and its implementation in the IFAM modem with the purpose of meeting a strict requirement for the IFAM error rate performance. To simulate the coded IFAM, a channel simulator is developed. It is basically a multi-tap filter whose parameters are set depending on the channel geometry and system specifics. The simulation results show that the turbo code is able to correct 89% of the messages received with errors in the hostile channel conditions. The Bose-Chadhuri-Hocquenghem (BCH) coding scheme corrects less that 15% of these messages. The other simulation results obtained for the system operation in different shallow water settings are presented.
Title: Turbo-coded frequency division multiplexing for underwater acoustic communications between 60 kHz and 90 kHz.
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Name(s): Pajovic, Milutin.
College of Engineering and Computer Science
Department of Ocean and Mechanical Engineering
Type of Resource: text
Genre: Electronic Thesis Or Dissertation
Issuance: monographic
Date Issued: 2009
Publisher: Florida Atlantic University
Physical Form: electronic
Extent: xv, 228 p. : ill. (some col.)
Language(s): English
Summary: The Intermediate Frequency Acoustic Modem (IFAM), developed by Dr. Beaujean, is designed to transmit the command-and-control messages from the top-side to the wet-side unit in ports and very shallow waters. This research presents the design of the turbo coding scheme and its implementation in the IFAM modem with the purpose of meeting a strict requirement for the IFAM error rate performance. To simulate the coded IFAM, a channel simulator is developed. It is basically a multi-tap filter whose parameters are set depending on the channel geometry and system specifics. The simulation results show that the turbo code is able to correct 89% of the messages received with errors in the hostile channel conditions. The Bose-Chadhuri-Hocquenghem (BCH) coding scheme corrects less that 15% of these messages. The other simulation results obtained for the system operation in different shallow water settings are presented.
Identifier: 428806460 (oclc), 215291 (digitool), FADT215291 (IID), fau:3425 (fedora)
Note(s): by Milutin Pajovic.
Thesis (M.S.C.S.)--Florida Atlantic University, 2009.
Includes bibliography.
Electronic reproduction. Boca Raton, Fla., 2009. Mode of access: World Wide Web.
Subject(s): Underwater acoustics -- Measurement
Coding theory
Signal processing -- Digital techniques
Held by: FBoU FAUER
Persistent Link to This Record: http://purl.flvc.org/FAU/215291
Use and Reproduction: http://rightsstatements.org/vocab/InC/1.0/
Host Institution: FAU