AnÃlise de Sistemas OFDM Cooperativos AF com Amplificadores de PotÃncia NÃo Linearesâ

Detalhes bibliográficos
Autor(a) principal: Eder Jacques Porfirio Farias
Data de Publicação: 2013
Tipo de documento: Dissertação
Idioma: por
Título da fonte: Biblioteca Digital de Teses e Dissertações da UFC
Texto Completo: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=10366
Resumo: Cooperation diversity and orthogonal frequency division multiplexing (OFDM) are two key technologies for the modern wireless communication systems. The cooperative communication systems considered through this work use the OFDM technology and they are composed of: one transmitter with a nonlinear power amplifier (PA), one or more amplify-and-forward (AF) relays, also having a nonlinear PAs, and one destination node. In this dissertaion, it is initially proposed an optimal receiver, in the signal to noise ratio (SNR) sense, for a nonlinear cooperative AF system. The proposed receiver uses the maximum ratio combining (MRC) diversity technique to combine the received signas, assuming that both the source-destination and source-relay-destination links are available. In the sequel, closed-form expressions for the instantaneous SNR and outage probability of the considered system are developed. The outage analysis is then extended to the case of a multi-hop system, that is, with multiple serial relays. Finally, an outage analysis is also proposed for a nonlinear AF OFDM system using a Selection Combining receiver, considering two cases: one relay and multiple parallel relays. Numerical simulation results are presented through the work, evaluating the performance of the proposed receiver and theoretical expressions.
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spelling info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisAnÃlise de Sistemas OFDM Cooperativos AF com Amplificadores de PotÃncia NÃo LinearesâAnalysis of Cooperative Systems OFDM AF with Nonlinear Power Amplifiers2013-07-26Andrà Lima FÃrrer de Almeida77024494387http://lattes.cnpq.br/118383051485731466213878300http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4426514E8Eder Jacques Porfirio FariasUniversidade Federal do CearÃPrograma de PÃs-GraduaÃÃo em Engenharia de TeleinformÃticaUFCBRTeleinformÃtica Sistemas de comunicaÃÃo sem fio Selection Combining MÃltiplos Relays Cooperative Communications Nonlinear Power AmplifierOptimum Receiver Outage ProbabilityENGENHARIASCooperation diversity and orthogonal frequency division multiplexing (OFDM) are two key technologies for the modern wireless communication systems. The cooperative communication systems considered through this work use the OFDM technology and they are composed of: one transmitter with a nonlinear power amplifier (PA), one or more amplify-and-forward (AF) relays, also having a nonlinear PAs, and one destination node. In this dissertaion, it is initially proposed an optimal receiver, in the signal to noise ratio (SNR) sense, for a nonlinear cooperative AF system. The proposed receiver uses the maximum ratio combining (MRC) diversity technique to combine the received signas, assuming that both the source-destination and source-relay-destination links are available. In the sequel, closed-form expressions for the instantaneous SNR and outage probability of the considered system are developed. The outage analysis is then extended to the case of a multi-hop system, that is, with multiple serial relays. Finally, an outage analysis is also proposed for a nonlinear AF OFDM system using a Selection Combining receiver, considering two cases: one relay and multiple parallel relays. Numerical simulation results are presented through the work, evaluating the performance of the proposed receiver and theoretical expressions.A diversidade cooperativa e a multiplexaÃÃo por divisÃo de frequÃncias ortogonais (Orthogonal Frequency Division Multiplexing - OFDM) sÃo duas das principais tecnologias para os sistemas de comunicaÃÃo sem fio modernos. Os sistemas de comunicaÃÃo cooperativos considerados neste trabalho de dissertaÃÃo utilizam a tecnologia OFDM e possuem: uma fonte com amplificador de potÃncia nÃo linear, um ou mais repetidores (relays) do tipo amplifica-e-encaminha (Amplify-and-Forward - AF), tambÃm com amplificadores de potÃncia (Power Amplifier - PA) nÃo lineares, e um nà destino. PropÃe-se inicialmente um receptor Ãtimo, no sentido da razÃo sinal ruÃdo (Signal-to-Noise Ratio - SNR) para um sistema OFDM cooperativo nÃo linear. Usando a tÃcnica de diversidade por combinaÃÃo de razÃo mÃxima (Maximal Ratio Combining - MRC) para tratar os sinais recebidos, o receptor proposto considera tanto as informaÃÃes oriundas do caminho direto (fonte-destino) como as provenientes do repetidor. Posteriormente, sÃo apresentadas expressÃes para o cÃlculo da SNR instantÃnea e da probabilidade de outage do sistema proposto. Fez-se ainda, uma proposta de expressÃo para o cÃlculo da probabilidade de outage do sistema considerando mÃltiplos relays em sÃrie. Por fim, propÃe-se expressÃes para o cÃlculo da probabilidade de outage do sistema utilizando receptor Selection Combining para um e para mÃltiplos relays dispostos paralelamente. Resultados de simulaÃÃo sÃo apresentados durante todo o trabalho, evidenciando o desempenho do receptor e das expressÃes propostas.CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superiorhttp://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=10366application/pdfinfo:eu-repo/semantics/openAccessporreponame:Biblioteca Digital de Teses e Dissertações da UFCinstname:Universidade Federal do Cearáinstacron:UFC2019-01-21T11:23:29Zmail@mail.com -
dc.title.pt.fl_str_mv AnÃlise de Sistemas OFDM Cooperativos AF com Amplificadores de PotÃncia NÃo Linearesâ
dc.title.alternative..fl_str_mv Analysis of Cooperative Systems OFDM AF with Nonlinear Power Amplifiers
title AnÃlise de Sistemas OFDM Cooperativos AF com Amplificadores de PotÃncia NÃo Linearesâ
spellingShingle AnÃlise de Sistemas OFDM Cooperativos AF com Amplificadores de PotÃncia NÃo Linearesâ
Eder Jacques Porfirio Farias
TeleinformÃtica
Sistemas de comunicaÃÃo sem fio
Selection Combining
MÃltiplos Relays
Cooperative Communications
Nonlinear Power Amplifier
Optimum Receiver
Outage Probability
ENGENHARIAS
title_short AnÃlise de Sistemas OFDM Cooperativos AF com Amplificadores de PotÃncia NÃo Linearesâ
title_full AnÃlise de Sistemas OFDM Cooperativos AF com Amplificadores de PotÃncia NÃo Linearesâ
title_fullStr AnÃlise de Sistemas OFDM Cooperativos AF com Amplificadores de PotÃncia NÃo Linearesâ
title_full_unstemmed AnÃlise de Sistemas OFDM Cooperativos AF com Amplificadores de PotÃncia NÃo Linearesâ
title_sort AnÃlise de Sistemas OFDM Cooperativos AF com Amplificadores de PotÃncia NÃo Linearesâ
author Eder Jacques Porfirio Farias
author_facet Eder Jacques Porfirio Farias
author_role author
dc.contributor.advisor1.fl_str_mv Andrà Lima FÃrrer de Almeida
dc.contributor.advisor1ID.fl_str_mv 77024494387
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/1183830514857314
dc.contributor.authorID.fl_str_mv 66213878300
dc.contributor.authorLattes.fl_str_mv http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4426514E8
dc.contributor.author.fl_str_mv Eder Jacques Porfirio Farias
contributor_str_mv Andrà Lima FÃrrer de Almeida
dc.subject.por.fl_str_mv TeleinformÃtica
Sistemas de comunicaÃÃo sem fio
topic TeleinformÃtica
Sistemas de comunicaÃÃo sem fio
Selection Combining
MÃltiplos Relays
Cooperative Communications
Nonlinear Power Amplifier
Optimum Receiver
Outage Probability
ENGENHARIAS
dc.subject.eng.fl_str_mv Selection Combining
MÃltiplos Relays
Cooperative Communications
Nonlinear Power Amplifier
Optimum Receiver
Outage Probability
dc.subject.cnpq.fl_str_mv ENGENHARIAS
dc.description.sponsorship.fl_txt_mv CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior
dc.description.abstract..fl_txt_mv Cooperation diversity and orthogonal frequency division multiplexing (OFDM) are two key technologies for the modern wireless communication systems. The cooperative communication systems considered through this work use the OFDM technology and they are composed of: one transmitter with a nonlinear power amplifier (PA), one or more amplify-and-forward (AF) relays, also having a nonlinear PAs, and one destination node. In this dissertaion, it is initially proposed an optimal receiver, in the signal to noise ratio (SNR) sense, for a nonlinear cooperative AF system. The proposed receiver uses the maximum ratio combining (MRC) diversity technique to combine the received signas, assuming that both the source-destination and source-relay-destination links are available. In the sequel, closed-form expressions for the instantaneous SNR and outage probability of the considered system are developed. The outage analysis is then extended to the case of a multi-hop system, that is, with multiple serial relays. Finally, an outage analysis is also proposed for a nonlinear AF OFDM system using a Selection Combining receiver, considering two cases: one relay and multiple parallel relays. Numerical simulation results are presented through the work, evaluating the performance of the proposed receiver and theoretical expressions.
dc.description.abstract.por.fl_txt_mv A diversidade cooperativa e a multiplexaÃÃo por divisÃo de frequÃncias ortogonais (Orthogonal Frequency Division Multiplexing - OFDM) sÃo duas das principais tecnologias para os sistemas de comunicaÃÃo sem fio modernos. Os sistemas de comunicaÃÃo cooperativos considerados neste trabalho de dissertaÃÃo utilizam a tecnologia OFDM e possuem: uma fonte com amplificador de potÃncia nÃo linear, um ou mais repetidores (relays) do tipo amplifica-e-encaminha (Amplify-and-Forward - AF), tambÃm com amplificadores de potÃncia (Power Amplifier - PA) nÃo lineares, e um nà destino. PropÃe-se inicialmente um receptor Ãtimo, no sentido da razÃo sinal ruÃdo (Signal-to-Noise Ratio - SNR) para um sistema OFDM cooperativo nÃo linear. Usando a tÃcnica de diversidade por combinaÃÃo de razÃo mÃxima (Maximal Ratio Combining - MRC) para tratar os sinais recebidos, o receptor proposto considera tanto as informaÃÃes oriundas do caminho direto (fonte-destino) como as provenientes do repetidor. Posteriormente, sÃo apresentadas expressÃes para o cÃlculo da SNR instantÃnea e da probabilidade de outage do sistema proposto. Fez-se ainda, uma proposta de expressÃo para o cÃlculo da probabilidade de outage do sistema considerando mÃltiplos relays em sÃrie. Por fim, propÃe-se expressÃes para o cÃlculo da probabilidade de outage do sistema utilizando receptor Selection Combining para um e para mÃltiplos relays dispostos paralelamente. Resultados de simulaÃÃo sÃo apresentados durante todo o trabalho, evidenciando o desempenho do receptor e das expressÃes propostas.
description Cooperation diversity and orthogonal frequency division multiplexing (OFDM) are two key technologies for the modern wireless communication systems. The cooperative communication systems considered through this work use the OFDM technology and they are composed of: one transmitter with a nonlinear power amplifier (PA), one or more amplify-and-forward (AF) relays, also having a nonlinear PAs, and one destination node. In this dissertaion, it is initially proposed an optimal receiver, in the signal to noise ratio (SNR) sense, for a nonlinear cooperative AF system. The proposed receiver uses the maximum ratio combining (MRC) diversity technique to combine the received signas, assuming that both the source-destination and source-relay-destination links are available. In the sequel, closed-form expressions for the instantaneous SNR and outage probability of the considered system are developed. The outage analysis is then extended to the case of a multi-hop system, that is, with multiple serial relays. Finally, an outage analysis is also proposed for a nonlinear AF OFDM system using a Selection Combining receiver, considering two cases: one relay and multiple parallel relays. Numerical simulation results are presented through the work, evaluating the performance of the proposed receiver and theoretical expressions.
publishDate 2013
dc.date.issued.fl_str_mv 2013-07-26
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/masterThesis
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dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal do CearÃ
dc.publisher.program.fl_str_mv Programa de PÃs-GraduaÃÃo em Engenharia de TeleinformÃtica
dc.publisher.initials.fl_str_mv UFC
dc.publisher.country.fl_str_mv BR
publisher.none.fl_str_mv Universidade Federal do CearÃ
dc.source.none.fl_str_mv reponame:Biblioteca Digital de Teses e Dissertações da UFC
instname:Universidade Federal do Ceará
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reponame_str Biblioteca Digital de Teses e Dissertações da UFC
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instname_str Universidade Federal do Ceará
instacron_str UFC
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