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Underwater communications using virtual time reversal in a variable geometry channel

2002Conference object Open access
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dc.contributor.authorSilva, A.
dc.contributor.authorJesus, S. M.
dc.date.accessioned2014-10-15T10:09:37Z
dc.date.available2014-10-15T10:09:37Z
dc.date.issued2002
dc.description.abstractField experiments using Time-Reversal Mirror( TRM) techniques have shown that the underwater acoustic channel presents a longer stability than it was previously anticipated. Applying such techniques to underwater communications requires that, either the emitted signals are previously ltered by time-reversed replicas of the channel impulse response or that a probe-signal should be transmitted ahead of the data-signal for post channel ltering. In the former case, the time-reversed ltered message is expected to be undone by the actual acoustic channel between the array and the receiver, while in the later, the undoing of the multipath is performed electronically inside the computer and is therefore termed as virtual Time Reversal Mirror(vTRM). The main issues being addressed in recent literature deal with channel stability, focus width and the required array aperture for obtaining reasonable temporal and/or spatial focusing. This paper focus essentially in two practical aspects, generally not addressed: one is to demonstrate the potential application of the vTRM approach to undo the severe intersymbol interference in a real variable geometry channel scenario and, the other, is the importance of optimization of the probe-signal time window length in a real application.por
dc.description.sponsorshipThis work was supported under projects INFANTE and INTIMATE of FCT, Lisboa, Portugal and project LOCAPASS(Ministry of Defense - FUP).por
dc.identifier.citationA.J. SILVA and S.M. JESUS, ``Underwater Communications Using Virtual Time Reversal in a Variable Geometry Channel'' in Proc. IEEE/MTS Oceans'2002, Biloxi, pp. 2416-2421, vol. 4.por
dc.identifier.doihttp://dx.doi.org/10.1109/OCEANS.2002.1192005
dc.identifier.isbn0-7803-7534-3
dc.identifier.otherAUT: SJE00662; ASI00912;
dc.identifier.urihttp://hdl.handle.net/10400.1/5316
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherIEEEpor
dc.subjectCoherent underwater acoustic communicationspor
dc.subjectShallow waterpor
dc.subjectTime-reversalpor
dc.titleUnderwater communications using virtual time reversal in a variable geometry channelpor
dc.typeconference object
dspace.entity.typePublication
oaire.citation.endPage2421por
oaire.citation.startPage2416por
oaire.citation.titleProceedings IEEE/MTS Oceans'2002por
oaire.citation.volume4por
person.familyNameSilva
person.familyNameJesus
person.givenNameAntónio
person.givenNameSergio
person.identifier.ciencia-idEB17-11D8-E7BD
person.identifier.orcid0000-0002-1724-7777
person.identifier.orcid0000-0002-6021-1761
person.identifier.ridN-6554-2013
person.identifier.scopus-author-id55846463600
person.identifier.scopus-author-id7003729485
rcaap.rightsopenAccesspor
rcaap.typeconferenceObjectpor
relation.isAuthorOfPublication564df7bf-2e6e-46bf-a80b-d37570d3b78d
relation.isAuthorOfPublicatione0226ece-3767-4beb-ab80-868e8897c14a
relation.isAuthorOfPublication.latestForDiscoverye0226ece-3767-4beb-ab80-868e8897c14a

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