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Free space optical communication systems exploring advanced modulation formats

2017Other Open access
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dc.contributor.authorCarmo, Rui
dc.date.accessioned2018-06-20T17:56:47Z
dc.date.available2018-06-20T17:56:47Z
dc.date.issued2017
dc.descriptionAspirante a Oficial-Aluno ENGEL 137737-L. Estabelecimentos de Ensino Superior: IST/AFApt_PT
dc.description.abstractIn the near future, one of the solutions for the exponential increase in bandwidth requirements and transmission capacity will be the transition of wireless communications to its fifth generation (5G), which will represent an important step in the fast-paced evolution of telecommunications. In this context, the use of free-space optical links will undoubtedly be a valuable asset for improving the coverage, capacity and overall quality of experience in the datacenters and in urban centers as it is a flexible and low-cost solution. It is possible to propose optical backhaul solutions with high capacity, spectral and energy efficiency, but also with low cost per bit. Thus, the present work proposes the study of advanced modulation formats, with potentiality of application in optical communication systems in free-space, favoring the possibility of using direct detection. In this sense, a project will be carried out, consisting on the implementation of a low-cost point-to-point optical communications module, operating in the visible spectral region and based on the direct modulation of the optical emitter. By modulating a subcarrier, the BPSK and QPSK formats are used, thus allowing increased spectral efficiency of the connection. From QPSK modulation, it was able to achieve an EVM(%) of 1.3%.pt_PT
dc.description.versionN/Apt_PT
dc.identifier.citationCARMO, Rui Miguel Coelho do - Free space optical communication systems exploring advanced modulation formats. 2017. 9 p. Artigo realizado pelo mestrando no Instituto Superior Técnico/Academia da Força Aérea, no âmbito do Curso de Mestrado na área Científica de Engenharia Electrotécnica e Computadores.pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.26/23154
dc.language.isoengpt_PT
dc.peerreviewednopt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectFree-space optical communicationspt_PT
dc.subjectAdvanced modulation formatspt_PT
dc.subjectPhase modulationpt_PT
dc.subjectSubcarrier modulationpt_PT
dc.subjectDirect detectionpt_PT
dc.subjectComunicações óticas em espaço livrept_PT
dc.subjectFormatos de modulação avançadospt_PT
dc.subjectModulação da subportadorapt_PT
dc.subjectModulação de fasept_PT
dc.subjectDeteção diretapt_PT
dc.titleFree space optical communication systems exploring advanced modulation formatspt_PT
dc.title.alternativeSistemas de Comunicações Óticas em Espaço Livre Explorando Formatos de Modulação Avançadospt_PT
dc.typeother
dspace.entity.typePublication
rcaap.rightsopenAccesspt_PT
rcaap.typeotherpt_PT

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