1 Ocak 2006 Dergi makalesi Açık Erişim

Song, H. C.; Hodgkiss, W. S.; Kuperman, W. A.; Stevenson, M.; Akal, T.

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/93775</identifier>
  <creators>
    <creator>
      <creatorName>Song, H. C.</creatorName>
      <givenName>H. C.</givenName>
      <familyName>Song</familyName>
    </creator>
    <creator>
      <creatorName>Hodgkiss, W. S.</creatorName>
      <givenName>W. S.</givenName>
      <familyName>Hodgkiss</familyName>
    </creator>
    <creator>
      <creatorName>Kuperman, W. A.</creatorName>
      <givenName>W. A.</givenName>
      <familyName>Kuperman</familyName>
    </creator>
    <creator>
      <creatorName>Stevenson, M.</creatorName>
      <givenName>M.</givenName>
      <familyName>Stevenson</familyName>
    </creator>
    <creator>
      <creatorName>Akal, T.</creatorName>
      <givenName>T.</givenName>
      <familyName>Akal</familyName>
    </creator>
  </creators>
  <titles>
    <title>Improvement Of Time-Reversal Communications Using Adaptive Channel Equalizers</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2006</publicationYear>
  <dates>
    <date dateType="Issued">2006-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/93775</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1109/JOE.2006.876139</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">The spatial and temporal focusing properties of time-reversal methods can be exploited for undersea acoustic communications. Spatial focusing mitigates channel fading and produces a high signal-to-noise ratio (SNR) at the intended receivers along with a low probability of interception elsewhere. While temporal focusing (compression) reduces significantly intersymbol interference (ISI), there always is some residual ISI depending upon the number of transmitters, their spatial distribution (spatial diversity), and the complexity of the channel. Moreover, a slight change in the environment over the two-way propagation interval introduces additional ISI. Using multilevel quadrature amplitude modulation (M-QAM) in shallow water, we demonstrate that the performance of time-reversal communications can be improved significantly by cascading the received time series with an adaptive channel equalizer to remove the residual ISI.</description>
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