Outage analysis of cooperative OFDM systems with nonlinear amplifiers and relay selection
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Institucional da Universidade Federal do Ceará (UFC) |
Texto Completo: | http://www.repositorio.ufc.br/handle/riufc/3953 |
Resumo: | Cooperative communications have emerged as a promising solution for wireless networks. In particular, currently there is a growing interest in amplify-and-forward (AF) cooperative systems with relay selection. On the other hand, orthogonal frequency division multiplexing (OFDM) has shown to be a key technology for future wireless communication systems. One of the main problems of OFDM systems is the high peak-to-average power ratio (PAPR) of the transmitted signals, which may cause the introduction of nonlinear distortions due to the presence of nonlinear power amplifiers (PAs). In this paper, a theoretical analysis of the outage probability of an AF OFDM system with relay selection is developed. Our analysis takes into consideration the nonlinear distortions introduced by a nonlinear PA and shows how its parameters affects the outage probability for different SNR levels. Numerical results are provided to validate the analytical results. |
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Repositório Institucional da Universidade Federal do Ceará (UFC) |
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Outage analysis of cooperative OFDM systems with nonlinear amplifiers and relay selectionTeleinformáticaTelecomunicaçõesSistemas de comunicação sem fioCooperative communications have emerged as a promising solution for wireless networks. In particular, currently there is a growing interest in amplify-and-forward (AF) cooperative systems with relay selection. On the other hand, orthogonal frequency division multiplexing (OFDM) has shown to be a key technology for future wireless communication systems. One of the main problems of OFDM systems is the high peak-to-average power ratio (PAPR) of the transmitted signals, which may cause the introduction of nonlinear distortions due to the presence of nonlinear power amplifiers (PAs). In this paper, a theoretical analysis of the outage probability of an AF OFDM system with relay selection is developed. Our analysis takes into consideration the nonlinear distortions introduced by a nonlinear PA and shows how its parameters affects the outage probability for different SNR levels. Numerical results are provided to validate the analytical results.Comunicações cooperativas surgiram como uma promissora solução para redes sem fio. Em particular, recentemente tem-se presenciado um interesse crescente em sistemas cooperativos do tipo amplifica-e-encaminha com selec¸ ão de relay. Por outro lado, a técnica de multiplexação por divisão em frequências ortogonais (OFDM) tem se mostrado ser uma tecnologia chave para os futuros sistemas de comunicação sem fio. Um dos principais problemas de sistemas OFDM é a grande variação da amplitude dos sinais transmitidos, o que pode leva à introdução de distorções nâo-lineares devido à presença de amplificadores de potência não-lineares. Neste artigo, uma análise teórica da probabilidade de outage em um sistema OFDM do tipo AF com seleção de relay é desenvolvida, análise esta que leva em conta as distorções não-lineares introduzidas por um amplificador de potência não-linear. A análise mostra como os parâmetros do amplificador alteram a probabilidade de outage para diferentes niveis de SNR. Resultados numéricos são fornecidos para validar os resultados analíticos.Simpósio Brasileiro de Telecomunicações2012-10-18T16:40:44Z2012-10-18T16:40:44Z2012info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectapplication/pdfFERNANDES, C. A. R. ; COSTA, D. B. ; ALMEIDA, A. L. F. Outage analysis of cooperative OFDM systems with nonlinear amplifiers and relay selection. In: SIMPÓSIO BRASILEIRO DE TELECOMUNICAÇOES, 30., 2012, Brasília. Anais... Brasília: Simpósio Brasileiro de Telecomunicações, set. 2012.http://www.repositorio.ufc.br/handle/riufc/3953Fernandes, Carlos Alexandre RolimCosta, Daniel Benevides daAlmeida, André Lima Férrer deengreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFCinfo:eu-repo/semantics/openAccess2022-11-10T12:41:00Zoai:repositorio.ufc.br:riufc/3953Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2022-11-10T12:41Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false |
dc.title.none.fl_str_mv |
Outage analysis of cooperative OFDM systems with nonlinear amplifiers and relay selection |
title |
Outage analysis of cooperative OFDM systems with nonlinear amplifiers and relay selection |
spellingShingle |
Outage analysis of cooperative OFDM systems with nonlinear amplifiers and relay selection Fernandes, Carlos Alexandre Rolim Teleinformática Telecomunicações Sistemas de comunicação sem fio |
title_short |
Outage analysis of cooperative OFDM systems with nonlinear amplifiers and relay selection |
title_full |
Outage analysis of cooperative OFDM systems with nonlinear amplifiers and relay selection |
title_fullStr |
Outage analysis of cooperative OFDM systems with nonlinear amplifiers and relay selection |
title_full_unstemmed |
Outage analysis of cooperative OFDM systems with nonlinear amplifiers and relay selection |
title_sort |
Outage analysis of cooperative OFDM systems with nonlinear amplifiers and relay selection |
author |
Fernandes, Carlos Alexandre Rolim |
author_facet |
Fernandes, Carlos Alexandre Rolim Costa, Daniel Benevides da Almeida, André Lima Férrer de |
author_role |
author |
author2 |
Costa, Daniel Benevides da Almeida, André Lima Férrer de |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Fernandes, Carlos Alexandre Rolim Costa, Daniel Benevides da Almeida, André Lima Férrer de |
dc.subject.por.fl_str_mv |
Teleinformática Telecomunicações Sistemas de comunicação sem fio |
topic |
Teleinformática Telecomunicações Sistemas de comunicação sem fio |
description |
Cooperative communications have emerged as a promising solution for wireless networks. In particular, currently there is a growing interest in amplify-and-forward (AF) cooperative systems with relay selection. On the other hand, orthogonal frequency division multiplexing (OFDM) has shown to be a key technology for future wireless communication systems. One of the main problems of OFDM systems is the high peak-to-average power ratio (PAPR) of the transmitted signals, which may cause the introduction of nonlinear distortions due to the presence of nonlinear power amplifiers (PAs). In this paper, a theoretical analysis of the outage probability of an AF OFDM system with relay selection is developed. Our analysis takes into consideration the nonlinear distortions introduced by a nonlinear PA and shows how its parameters affects the outage probability for different SNR levels. Numerical results are provided to validate the analytical results. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-10-18T16:40:44Z 2012-10-18T16:40:44Z 2012 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
FERNANDES, C. A. R. ; COSTA, D. B. ; ALMEIDA, A. L. F. Outage analysis of cooperative OFDM systems with nonlinear amplifiers and relay selection. In: SIMPÓSIO BRASILEIRO DE TELECOMUNICAÇOES, 30., 2012, Brasília. Anais... Brasília: Simpósio Brasileiro de Telecomunicações, set. 2012. http://www.repositorio.ufc.br/handle/riufc/3953 |
identifier_str_mv |
FERNANDES, C. A. R. ; COSTA, D. B. ; ALMEIDA, A. L. F. Outage analysis of cooperative OFDM systems with nonlinear amplifiers and relay selection. In: SIMPÓSIO BRASILEIRO DE TELECOMUNICAÇOES, 30., 2012, Brasília. Anais... Brasília: Simpósio Brasileiro de Telecomunicações, set. 2012. |
url |
http://www.repositorio.ufc.br/handle/riufc/3953 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
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 |
Simpósio Brasileiro de Telecomunicações |
publisher.none.fl_str_mv |
Simpósio Brasileiro de Telecomunicações |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da Universidade Federal do Ceará (UFC) instname:Universidade Federal do Ceará (UFC) instacron:UFC |
instname_str |
Universidade Federal do Ceará (UFC) |
instacron_str |
UFC |
institution |
UFC |
reponame_str |
Repositório Institucional da Universidade Federal do Ceará (UFC) |
collection |
Repositório Institucional da Universidade Federal do Ceará (UFC) |
repository.name.fl_str_mv |
Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC) |
repository.mail.fl_str_mv |
bu@ufc.br || repositorio@ufc.br |
_version_ |
1809935814166052864 |