Loading…

The effect of diffused arrivals on the performance of phase coherent underwater acoustic communications

The delayed multipath arrivals cause intersymbol interference (ISI) in underwater acoustic communications, which can sometimes extend over tens to hundreds of symbols. The performance of the decision feedback equalizer (DFE) requires a reasonably accurate estimate of the number of tap coefficients a...

Full description

Saved in:
Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2001-05, Vol.109 (5_Supplement), p.2451-2451
Main Authors: Yang, T. C., Yoo, Kwang, Al-Kurd, Azmi
Format: Article
Language:English
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
cited_by
cites
container_end_page 2451
container_issue 5_Supplement
container_start_page 2451
container_title The Journal of the Acoustical Society of America
container_volume 109
creator Yang, T. C.
Yoo, Kwang
Al-Kurd, Azmi
description The delayed multipath arrivals cause intersymbol interference (ISI) in underwater acoustic communications, which can sometimes extend over tens to hundreds of symbols. The performance of the decision feedback equalizer (DFE) requires a reasonably accurate estimate of the number of tap coefficients as too few taps fail to remove the ISI and too many taps increases the mean square error (the processor noise). An initial estimate of the channel impulse response is often used to determine the number and positions of the taps. This decision is clear-cut for well-defined (usually high-amplitude) arrivals but ambiguous for diffused arrivals that are weak and undistinguished. It should be noted that diffused arrivals can be a significant component of the signal, resulting usually from sound scattering from fluctuating surface/bottom and random media. Its amplitude and complexity are compounded and enhanced by platform motion. This work illustrates the effect of diffused arrivals on the performance of the equalizer by introducing diffused arrivals in a simple model and proceeds to show the effect of wind speed on the bit error rate in realistic ocean channels. [Work supported by ONR.]
doi_str_mv 10.1121/1.4744689
format article
fullrecord <record><control><sourceid>crossref</sourceid><recordid>TN_cdi_crossref_primary_10_1121_1_4744689</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>10_1121_1_4744689</sourcerecordid><originalsourceid>FETCH-crossref_primary_10_1121_1_47446893</originalsourceid><addsrcrecordid>eNqVj81KxDAUhYM4YP1Z-AZ366Jjbiet7VoUH2D2IaQ3NoNNyr2p4tvbgXkBV4fD-TjwKfWIeo_Y4DPuzYsxXT9cqQrbRtd925hrVWmtsTZD192oW5HTVtv-MFTq8zgRUAjkC-QAYwxhFRrBMcdv9yWQE5QNWYhD5tklT2dumZwQ-DwRUyqwppH4xxVicD6vUqLfxnleU_SuxJzkXu3CdkcPl7xTT-9vx9eP2nMWYQp24Tg7_rWo7dnEor2YHP7D_gFXrk_X</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>The effect of diffused arrivals on the performance of phase coherent underwater acoustic communications</title><source>American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list)</source><creator>Yang, T. C. ; Yoo, Kwang ; Al-Kurd, Azmi</creator><creatorcontrib>Yang, T. C. ; Yoo, Kwang ; Al-Kurd, Azmi</creatorcontrib><description>The delayed multipath arrivals cause intersymbol interference (ISI) in underwater acoustic communications, which can sometimes extend over tens to hundreds of symbols. The performance of the decision feedback equalizer (DFE) requires a reasonably accurate estimate of the number of tap coefficients as too few taps fail to remove the ISI and too many taps increases the mean square error (the processor noise). An initial estimate of the channel impulse response is often used to determine the number and positions of the taps. This decision is clear-cut for well-defined (usually high-amplitude) arrivals but ambiguous for diffused arrivals that are weak and undistinguished. It should be noted that diffused arrivals can be a significant component of the signal, resulting usually from sound scattering from fluctuating surface/bottom and random media. Its amplitude and complexity are compounded and enhanced by platform motion. This work illustrates the effect of diffused arrivals on the performance of the equalizer by introducing diffused arrivals in a simple model and proceeds to show the effect of wind speed on the bit error rate in realistic ocean channels. [Work supported by ONR.]</description><identifier>ISSN: 0001-4966</identifier><identifier>EISSN: 1520-8524</identifier><identifier>DOI: 10.1121/1.4744689</identifier><language>eng</language><ispartof>The Journal of the Acoustical Society of America, 2001-05, Vol.109 (5_Supplement), p.2451-2451</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Yang, T. C.</creatorcontrib><creatorcontrib>Yoo, Kwang</creatorcontrib><creatorcontrib>Al-Kurd, Azmi</creatorcontrib><title>The effect of diffused arrivals on the performance of phase coherent underwater acoustic communications</title><title>The Journal of the Acoustical Society of America</title><description>The delayed multipath arrivals cause intersymbol interference (ISI) in underwater acoustic communications, which can sometimes extend over tens to hundreds of symbols. The performance of the decision feedback equalizer (DFE) requires a reasonably accurate estimate of the number of tap coefficients as too few taps fail to remove the ISI and too many taps increases the mean square error (the processor noise). An initial estimate of the channel impulse response is often used to determine the number and positions of the taps. This decision is clear-cut for well-defined (usually high-amplitude) arrivals but ambiguous for diffused arrivals that are weak and undistinguished. It should be noted that diffused arrivals can be a significant component of the signal, resulting usually from sound scattering from fluctuating surface/bottom and random media. Its amplitude and complexity are compounded and enhanced by platform motion. This work illustrates the effect of diffused arrivals on the performance of the equalizer by introducing diffused arrivals in a simple model and proceeds to show the effect of wind speed on the bit error rate in realistic ocean channels. [Work supported by ONR.]</description><issn>0001-4966</issn><issn>1520-8524</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2001</creationdate><recordtype>article</recordtype><recordid>eNqVj81KxDAUhYM4YP1Z-AZ366Jjbiet7VoUH2D2IaQ3NoNNyr2p4tvbgXkBV4fD-TjwKfWIeo_Y4DPuzYsxXT9cqQrbRtd925hrVWmtsTZD192oW5HTVtv-MFTq8zgRUAjkC-QAYwxhFRrBMcdv9yWQE5QNWYhD5tklT2dumZwQ-DwRUyqwppH4xxVicD6vUqLfxnleU_SuxJzkXu3CdkcPl7xTT-9vx9eP2nMWYQp24Tg7_rWo7dnEor2YHP7D_gFXrk_X</recordid><startdate>20010501</startdate><enddate>20010501</enddate><creator>Yang, T. C.</creator><creator>Yoo, Kwang</creator><creator>Al-Kurd, Azmi</creator><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>20010501</creationdate><title>The effect of diffused arrivals on the performance of phase coherent underwater acoustic communications</title><author>Yang, T. C. ; Yoo, Kwang ; Al-Kurd, Azmi</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-crossref_primary_10_1121_1_47446893</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2001</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yang, T. C.</creatorcontrib><creatorcontrib>Yoo, Kwang</creatorcontrib><creatorcontrib>Al-Kurd, Azmi</creatorcontrib><collection>CrossRef</collection><jtitle>The Journal of the Acoustical Society of America</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yang, T. C.</au><au>Yoo, Kwang</au><au>Al-Kurd, Azmi</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The effect of diffused arrivals on the performance of phase coherent underwater acoustic communications</atitle><jtitle>The Journal of the Acoustical Society of America</jtitle><date>2001-05-01</date><risdate>2001</risdate><volume>109</volume><issue>5_Supplement</issue><spage>2451</spage><epage>2451</epage><pages>2451-2451</pages><issn>0001-4966</issn><eissn>1520-8524</eissn><abstract>The delayed multipath arrivals cause intersymbol interference (ISI) in underwater acoustic communications, which can sometimes extend over tens to hundreds of symbols. The performance of the decision feedback equalizer (DFE) requires a reasonably accurate estimate of the number of tap coefficients as too few taps fail to remove the ISI and too many taps increases the mean square error (the processor noise). An initial estimate of the channel impulse response is often used to determine the number and positions of the taps. This decision is clear-cut for well-defined (usually high-amplitude) arrivals but ambiguous for diffused arrivals that are weak and undistinguished. It should be noted that diffused arrivals can be a significant component of the signal, resulting usually from sound scattering from fluctuating surface/bottom and random media. Its amplitude and complexity are compounded and enhanced by platform motion. This work illustrates the effect of diffused arrivals on the performance of the equalizer by introducing diffused arrivals in a simple model and proceeds to show the effect of wind speed on the bit error rate in realistic ocean channels. [Work supported by ONR.]</abstract><doi>10.1121/1.4744689</doi></addata></record>
fulltext fulltext
identifier ISSN: 0001-4966
ispartof The Journal of the Acoustical Society of America, 2001-05, Vol.109 (5_Supplement), p.2451-2451
issn 0001-4966
1520-8524
language eng
recordid cdi_crossref_primary_10_1121_1_4744689
source American Institute of Physics:Jisc Collections:Transitional Journals Agreement 2021-23 (Reading list)
title The effect of diffused arrivals on the performance of phase coherent underwater acoustic communications
url http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-06T22%3A28%3A36IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-crossref&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=The%20effect%20of%20diffused%20arrivals%20on%20the%20performance%20of%20phase%20coherent%20underwater%20acoustic%20communications&rft.jtitle=The%20Journal%20of%20the%20Acoustical%20Society%20of%20America&rft.au=Yang,%20T.%20C.&rft.date=2001-05-01&rft.volume=109&rft.issue=5_Supplement&rft.spage=2451&rft.epage=2451&rft.pages=2451-2451&rft.issn=0001-4966&rft.eissn=1520-8524&rft_id=info:doi/10.1121/1.4744689&rft_dat=%3Ccrossref%3E10_1121_1_4744689%3C/crossref%3E%3Cgrp_id%3Ecdi_FETCH-crossref_primary_10_1121_1_47446893%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true