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On-off keying transmitter design for navigation by visible light communication

2018Conference object Restricted access
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dc.contributor.authorLouro, Paula
dc.contributor.authorVieira, Manuela
dc.contributor.authorCosta, João
dc.contributor.authorVieira, Manuel
dc.date.accessioned2019-04-29T09:57:59Z
dc.date.available2019-04-29T09:57:59Z
dc.date.issued2018
dc.description.abstractWhite LEDS revolutionized the field of illumination technology mainly due to the energy saving effects. Besides lighting purposes LEDs can also be used in wireless communication systems when integrated in Visible Light Communication (VLC) systems. Indoor positioning for navigation in large buildings is currently under research to overcome the difficulties associated with the use of GPS in such environments. The motivation for this application is also supported by the possibility of taking advantage of an existing lighting and WiFi infrastructure. In this work it is proposed an indoor navigation system based on the use of VLC technology. The proposed system includes trichromatic white LEDs with the red and blue chips modulated at different frequencies and a pinpin photodetector with selective spectral sensitivity. Optoelectronic features of both optical sources and photodetector device are analyzed. The photodetector device consists two pin structures based on a-SiC:H and a-Si:H with geometrical configuration optimized for the detection of short and large wavelengths in the visible range. Its sensitivity is externally tuned by steady state optical bias. The localization algorithm makes use of the Fourier transform to identify the frequencies present in the photocurrent signal and the wavelength filtering properties of the sensor under front and back optical bias to detect the existing red and blue signals. The viability of the system was demonstrated through the implementation of an automatic algorithm to infer the photodetector cardinal direction. A capacitive optoelectronic model supports the experimental results and explains the device operation.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationLOURO, Paula; [et al] – On-off keying transmitter design for navigation by visible light communication. In Proceedings of SPIE – Optical Interconnects XVIII. San Francisco, California, EUA: SPIE, 2018. ISSN 0277-786X. Vol. 10538, pp. 1053809-1- 1053809-9pt_PT
dc.identifier.doi10.1117/12.2290251pt_PT
dc.identifier.issn0277-786X
dc.identifier.issn1996-756X
dc.identifier.urihttp://hdl.handle.net/10400.21/9897
dc.language.isoengpt_PT
dc.publisherSociety of Photo-optical Instrumentation Engineerspt_PT
dc.relationProjeto financiado no âmbito do Concurso de Projetos de Investigação, Desenvolvimento, Inovação & Criação Artística (IDI&CA) financiados pelo Instituto Politécnico de Lisboa. IPL/2016/VLC_MIMO_ISELpt_PT
dc.relationProjeto financiado no âmbito do Concurso de Projetos de Investigação, Desenvolvimento, Inovação & Criação Artística (IDI&CA) financiados pelo Instituto Politécnico de Lisboa. IPL/2017/SMART_VeDa/ISELpt_PT
dc.subjectAmorphous SiCpt_PT
dc.subjectOptoelectronicspt_PT
dc.subjectSpectral sensitivitypt_PT
dc.subjectWhite LEDspt_PT
dc.subjectVisible light communicationpt_PT
dc.subjectIndoor positioningpt_PT
dc.subjectOn-off modulationpt_PT
dc.titleOn-off keying transmitter design for navigation by visible light communicationpt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FEEA%2F00066%2F2013/PT
oaire.citation.conferencePlaceJan 29-31, 2018 - San Francisco, California, EUApt_PT
oaire.citation.endPage1053809-9pt_PT
oaire.citation.startPage1053809-1pt_PT
oaire.citation.titleConference on Optical Interconnects XVIIIpt_PT
oaire.citation.volume10538pt_PT
oaire.fundingStream5876
person.familyNameLouro
person.familyNameVieira
person.familyNameCosta
person.familyNameVieira
person.givenNamePaula
person.givenNameManuela
person.givenNameJoão
person.givenNameManuel
person.identifier499161
person.identifier10792
person.identifier.ciencia-idE511-8C08-E606
person.identifier.ciencia-id9516-E25E-BB8E
person.identifier.ciencia-id2314-A300-7C09
person.identifier.orcid0000-0002-4167-2052
person.identifier.orcid0000-0002-1150-9895
person.identifier.orcid0000-0002-8058-3685
person.identifier.orcid0000-0002-6662-6220
person.identifier.ridU-8346-2017
person.identifier.ridV-7860-2017
person.identifier.scopus-author-id8845716400
person.identifier.scopus-author-id7202140173
person.identifier.scopus-author-id35810047500
person.identifier.scopus-author-id36722787500
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typeconferenceObjectpt_PT
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