An?lise de desempenho do GFDM e WHT-GFDM em canais seletivos em frequ?ncia
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da INATEL |
Texto Completo: | http://tede.inatel.br:8080/tede/handle/tede/25 |
Resumo: | Cognitive Radio (CR) networks are able to establish communication using vacant channels reserved for primary users without interfering in the communication of the incumbents. In order to achieve this goal, CR must reduce out-of-band transmissions to avoid interference in adjacent channels. Usually, broadband digital communication standards that employ Cognitive engines for opportunistic spectrum allocation use Orthogonal Frequency Division Multiplexing (OFDM) as aerial interface. However, a technique called General Frequency Division Multiplexing (GFDM) has spectral characteristics that are more suitable for CR networks. The aim of this paper is to evaluate the performance of this technique under frequency-selective channels, compare it with OFDM and to evaluate the performance of this technique combined with the Walsh-Hadammard Transformation (WHT). This comparison is made considering that GFDM and OFDM symbols has the same subcarrier separation. The simulation results shows that OFDM and GFDM achieves equivalent performance under selective channels and the equations used to evaluate the performance of OFDM system can also be used to analyze the GFDM performance over frequency-selective channel. In the case associated to WHT, the advantages of WHT-OFDM can also be observed in WHT-GFDM. |
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Mendes, Luciano Leonel269.670.448-18http://lattes.cnpq.br/9119890339398363Mendes, Luciano Leonel269.670.448-18http://lattes.cnpq.br/9119890339398363Rocha, Carlos Aur?lio Faria dahttp://lattes.cnpq.br/7282182907514277Guimar?es, Dayan Adionel739.337.836-15http://lattes.cnpq.br/2503439503631682223.264.978-48http://lattes.cnpq.br/0799165636414809Alves, Bruno Moreira2016-06-27T19:31:47Z2014-07-24Alves, Bruno Moreira. An?lise de desempenho do GFDM e WHT-GFDM em canais seletivos em frequ?ncia. 2014. [51]. Disserta????o( Programa 1) - Instituto Nacional de Telecomunicacoes, [Santa Rita do Sapuca?] .http://tede.inatel.br:8080/tede/handle/tede/25Cognitive Radio (CR) networks are able to establish communication using vacant channels reserved for primary users without interfering in the communication of the incumbents. In order to achieve this goal, CR must reduce out-of-band transmissions to avoid interference in adjacent channels. Usually, broadband digital communication standards that employ Cognitive engines for opportunistic spectrum allocation use Orthogonal Frequency Division Multiplexing (OFDM) as aerial interface. However, a technique called General Frequency Division Multiplexing (GFDM) has spectral characteristics that are more suitable for CR networks. The aim of this paper is to evaluate the performance of this technique under frequency-selective channels, compare it with OFDM and to evaluate the performance of this technique combined with the Walsh-Hadammard Transformation (WHT). This comparison is made considering that GFDM and OFDM symbols has the same subcarrier separation. The simulation results shows that OFDM and GFDM achieves equivalent performance under selective channels and the equations used to evaluate the performance of OFDM system can also be used to analyze the GFDM performance over frequency-selective channel. In the case associated to WHT, the advantages of WHT-OFDM can also be observed in WHT-GFDM.Redes de R?dio Cognitivo (RC) s~ao capazes de estabelecer uma comunica??o utilizando espa?os vagos do espectro, reservados para outros servi?os, sem interferir na comunica??o dos servi?os prim?rios. Para atingir este objetivo, o RC deve reduzir as emiss?es fora-da-faixa para evitar interfer?ncia nos canais adjacentes. Normalmente, os padr?es de comunica??o digital de banda larga que empregam aloca??o oportunista de espectro, utilizam Orthogonal Frequency Division Multiplexing (OFDM) como interface a?rea. No entanto, uma t?cnica chamada Generalized Frequency Division Multiplexing (GFDM) tem caracter?sticas espectrais mais adequadas para redes de RC. O objetivo desta disserta??o ? avaliar o desempenho desta t?cnica em canais seletivos em frequ?ncia invariantes no tempo, compar?-la com OFDM e avaliar o desempenho desta t?cnica combinada com a transformada de Walsh-Hadammard (WHT). Esta compara??o ? feita considerando que s?mbolos GFDM e OFDM possuem o mesmo espa?amento entre subportadoras. Os resultados das simula??es mostram que o OFDM e o GFDM podem apresentar o mesmo desempenho em canais seletivos e as equa??es utilizadas para avaliar o desempenho do sistema OFDM tamb?m podem ser utilizadas para analisar o desempenho do GFDM em canais seletivos em frequ?ncia. No caso associado ? WHT, as vantagens do WHT-OFDM tamb?m podem ser observadas no WHT-GFDM.Submitted by Tede Dspace (tede@inatel.br) on 2016-06-27T19:31:47Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Disserta??o V.Final Bruno Moreira.pdf: 2373679 bytes, checksum: 6b5128ed930a2c333ce3c9403165940c (MD5)Made available in DSpace on 2016-06-27T19:31:47Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Disserta??o V.Final Bruno Moreira.pdf: 2373679 bytes, checksum: 6b5128ed930a2c333ce3c9403165940c (MD5) Previous issue date: 2014-07-24application/pdfhttp://tede.inatel.br:8080/jspui/retrieve/301/Disserta%c3%a7%c3%a3o%20V.Final%20Bruno%20Moreira.pdf.jpgporInstituto Nacional de Telecomunica??esMestrado em Engenharia de Telecomunica??esINATELBrasilInstituto Nacional de Telecomunica??eshttp://creativecommons.org/licenses/by-nd/4.0/info:eu-repo/semantics/openAccessModula??o digital; multiportadora; ceifamento; modelos de canal; desempenhoEngenharia - Telecomunica??esAn?lise de desempenho do GFDM e WHT-GFDM em canais seletivos em frequ?nciainfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisreponame:Biblioteca Digital de Teses e Dissertações da INATELinstname:Instituto Nacional de Telecomunicações (INATEL)instacron:INATELLICENSElicense.txtlicense.txttext/plain; charset=utf-8112http://localhost:8080/tede/bitstream/tede/25/1/license.txtc6279291b293f0db82678eaa73a27769MD51CC-LICENSElicense_urllicense_urltext/plain; charset=utf-846http://localhost:8080/tede/bitstream/tede/25/2/license_url587cd8ffae15c8598ed3c46d248a3f38MD52license_textlicense_texttext/html; charset=utf-80http://localhost:8080/tede/bitstream/tede/25/3/license_textd41d8cd98f00b204e9800998ecf8427eMD53license_rdflicense_rdfapplication/rdf+xml; charset=utf-80http://localhost:8080/tede/bitstream/tede/25/4/license_rdfd41d8cd98f00b204e9800998ecf8427eMD54ORIGINALDisserta??o V.Final Bruno Moreira.pdfDisserta??o V.Final Bruno Moreira.pdfapplication/pdf2373679http://localhost:8080/tede/bitstream/tede/25/5/Disserta%C3%A7%C3%A3o+V.Final+Bruno+Moreira.pdf6b5128ed930a2c333ce3c9403165940cMD55TEXTDisserta??o V.Final Bruno Moreira.pdf.txtDisserta??o V.Final Bruno Moreira.pdf.txttext/plain87113http://localhost:8080/tede/bitstream/tede/25/6/Disserta%C3%A7%C3%A3o+V.Final+Bruno+Moreira.pdf.txt7b01c3c4beb4a2d1c0125aae6237930aMD56THUMBNAILDisserta??o V.Final Bruno Moreira.pdf.jpgDisserta??o V.Final Bruno Moreira.pdf.jpgimage/jpeg4828http://localhost:8080/tede/bitstream/tede/25/7/Disserta%C3%A7%C3%A3o+V.Final+Bruno+Moreira.pdf.jpgf0b723f30129a72811986877c7b06b90MD57tede/252018-04-16 16:22:21.012oai:localhost:tede/25QXV0b3Jpem8gYSBwdWJsaWNhPz9vIGRhIG1pbmhhIERpc3NlcnRhPz9vIGRlIE1lc3RyYWRvLCBlbSBmb3JtYXRvIFBERiwgY29tIGJsb3F1ZWlvIGRlIGVkaT8/bywgY29sYWdlbSBlIGM/cGlhLg==Biblioteca Digital de Teses e Dissertaçõeshttp://tede.inatel.br:8080/jspui/PUBhttp://tede.inatel.br:8080/oai/requestbiblioteca@inatel.br || biblioteca.atendimento@inatel.bropendoar:2018-04-16T19:22:21Biblioteca Digital de Teses e Dissertações da INATEL - Instituto Nacional de Telecomunicações (INATEL)false |
dc.title.por.fl_str_mv |
An?lise de desempenho do GFDM e WHT-GFDM em canais seletivos em frequ?ncia |
title |
An?lise de desempenho do GFDM e WHT-GFDM em canais seletivos em frequ?ncia |
spellingShingle |
An?lise de desempenho do GFDM e WHT-GFDM em canais seletivos em frequ?ncia Alves, Bruno Moreira Modula??o digital; multiportadora; ceifamento; modelos de canal; desempenho Engenharia - Telecomunica??es |
title_short |
An?lise de desempenho do GFDM e WHT-GFDM em canais seletivos em frequ?ncia |
title_full |
An?lise de desempenho do GFDM e WHT-GFDM em canais seletivos em frequ?ncia |
title_fullStr |
An?lise de desempenho do GFDM e WHT-GFDM em canais seletivos em frequ?ncia |
title_full_unstemmed |
An?lise de desempenho do GFDM e WHT-GFDM em canais seletivos em frequ?ncia |
title_sort |
An?lise de desempenho do GFDM e WHT-GFDM em canais seletivos em frequ?ncia |
author |
Alves, Bruno Moreira |
author_facet |
Alves, Bruno Moreira |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Mendes, Luciano Leonel |
dc.contributor.advisor1ID.fl_str_mv |
269.670.448-18 |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/9119890339398363 |
dc.contributor.referee1.fl_str_mv |
Mendes, Luciano Leonel |
dc.contributor.referee1ID.fl_str_mv |
269.670.448-18 |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/9119890339398363 |
dc.contributor.referee2.fl_str_mv |
Rocha, Carlos Aur?lio Faria da |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/7282182907514277 |
dc.contributor.referee3.fl_str_mv |
Guimar?es, Dayan Adionel |
dc.contributor.referee3ID.fl_str_mv |
739.337.836-15 |
dc.contributor.referee3Lattes.fl_str_mv |
http://lattes.cnpq.br/2503439503631682 |
dc.contributor.authorID.fl_str_mv |
223.264.978-48 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/0799165636414809 |
dc.contributor.author.fl_str_mv |
Alves, Bruno Moreira |
contributor_str_mv |
Mendes, Luciano Leonel Mendes, Luciano Leonel Rocha, Carlos Aur?lio Faria da Guimar?es, Dayan Adionel |
dc.subject.por.fl_str_mv |
Modula??o digital; multiportadora; ceifamento; modelos de canal; desempenho |
topic |
Modula??o digital; multiportadora; ceifamento; modelos de canal; desempenho Engenharia - Telecomunica??es |
dc.subject.cnpq.fl_str_mv |
Engenharia - Telecomunica??es |
description |
Cognitive Radio (CR) networks are able to establish communication using vacant channels reserved for primary users without interfering in the communication of the incumbents. In order to achieve this goal, CR must reduce out-of-band transmissions to avoid interference in adjacent channels. Usually, broadband digital communication standards that employ Cognitive engines for opportunistic spectrum allocation use Orthogonal Frequency Division Multiplexing (OFDM) as aerial interface. However, a technique called General Frequency Division Multiplexing (GFDM) has spectral characteristics that are more suitable for CR networks. The aim of this paper is to evaluate the performance of this technique under frequency-selective channels, compare it with OFDM and to evaluate the performance of this technique combined with the Walsh-Hadammard Transformation (WHT). This comparison is made considering that GFDM and OFDM symbols has the same subcarrier separation. The simulation results shows that OFDM and GFDM achieves equivalent performance under selective channels and the equations used to evaluate the performance of OFDM system can also be used to analyze the GFDM performance over frequency-selective channel. In the case associated to WHT, the advantages of WHT-OFDM can also be observed in WHT-GFDM. |
publishDate |
2014 |
dc.date.issued.fl_str_mv |
2014-07-24 |
dc.date.accessioned.fl_str_mv |
2016-06-27T19:31:47Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
Alves, Bruno Moreira. An?lise de desempenho do GFDM e WHT-GFDM em canais seletivos em frequ?ncia. 2014. [51]. Disserta????o( Programa 1) - Instituto Nacional de Telecomunicacoes, [Santa Rita do Sapuca?] . |
dc.identifier.uri.fl_str_mv |
http://tede.inatel.br:8080/tede/handle/tede/25 |
identifier_str_mv |
Alves, Bruno Moreira. An?lise de desempenho do GFDM e WHT-GFDM em canais seletivos em frequ?ncia. 2014. [51]. Disserta????o( Programa 1) - Instituto Nacional de Telecomunicacoes, [Santa Rita do Sapuca?] . |
url |
http://tede.inatel.br:8080/tede/handle/tede/25 |
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por |
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por |
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http://creativecommons.org/licenses/by-nd/4.0/ info:eu-repo/semantics/openAccess |
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http://creativecommons.org/licenses/by-nd/4.0/ |
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openAccess |
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Instituto Nacional de Telecomunica??es |
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Mestrado em Engenharia de Telecomunica??es |
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INATEL |
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Brasil |
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Instituto Nacional de Telecomunica??es |
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Instituto Nacional de Telecomunica??es |
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