Estimação de sinais caóticos com aplicação em sistemas de comunicação

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dc.contributor.advisorLopes, Paulo Batistapt_BR
dc.contributor.authorAmaral, Marcos Almeida dopt_BR
dc.creator.Latteshttp://lattes.cnpq.br/6908955844398835por
dc.date.accessioned2016-03-15T19:37:36Z
dc.date.accessioned2020-05-28T18:08:30Z
dc.date.available2011-08-27pt_BR
dc.date.available2020-05-28T18:08:30Z
dc.date.issued2011-02-01pt_BR
dc.description.abstractCommunications have achieved great development on several fronts over the years. Among these, the communication using chaotic signals has been object of growing interest among researchers due to the characteristics of spread spectrum and hard detection. However these techniques still have inferior performance in comparison to conventional methods in non-ideal channels. To contribute do the solution of this problem, statistical estimation algorithms have been applied to the detection of the transmitted signal. The objective of this thesis is to study a communication system using chaotic carriers and reception with maximum likelihood (ML-CSK - Maximum Likelihood Chaos Shift Keying). For this, the application of Viterbi algorithm in chaotic modulation signals is investigated. As the previously proposed algorithms offer only good performance to signals generated by maps that present well-behaved probability density, a new technique was designed based on analysis of the map characteristics, obtained numerically through a training vector. The results of performed simulations assure the applicability and the good performance of the proposed innovations.eng
dc.formatapplication/pdfpor
dc.identifier.urihttp://dspace.mackenzie.br/handle/10899/24319
dc.languageporpor
dc.publisherUniversidade Presbiteriana Mackenziepor
dc.rightsAcesso Abertopor
dc.subjectmodulação caóticapor
dc.subjectestimaçãopor
dc.subjectmáxima verossimilhançapor
dc.subjectalgoritmo de Viterbipor
dc.subjectsistemas dinâmicospor
dc.subjectchaotic modulation, estimation, maximum likelihood, Viterbi algorithm, dynamic systemseng
dc.subject.cnpqCNPQ::ENGENHARIAS::ENGENHARIA ELETRICApor
dc.thumbnail.urlhttp://tede.mackenzie.br/jspui/retrieve/3826/Marcos%20Almeida%20do%20Amaral.pdf.jpg*
dc.titleEstimação de sinais caóticos com aplicação em sistemas de comunicaçãopor
dc.typeDissertaçãopor
local.contributor.board1Matos, Christiano José Santiago dept_BR
local.contributor.board1Latteshttp://lattes.cnpq.br/6843256597783676por
local.contributor.board2Romano, João Marcos Travassospt_BR
local.contributor.board2Latteshttp://lattes.cnpq.br/6161888127051479por
local.publisher.countryBRpor
local.publisher.departmentEngenharia Elétricapor
local.publisher.initialsUPMpor
local.publisher.programEngenharia Elétricapor
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Engenharia Elétrica e Computação - Dissertações - EE Higienópolis