Detectores adaptativos robustos projetados via otimiza??o convexa para sensoriamento espectral em r?dios cognitivos sob ru?do impulsivo
Autor(a) principal: | |
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Data de Publicação: | 2013 |
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/38 |
Resumo: | This master thesis proposes a new approach for the design of optimal adaptive detectors for centralized cooperative spectrum sensing based on the eigenvalues of the received signal covariance matrix. The project is treated as a convex optimization problem from which detectors are developed under the minimax criterion, adapted to the presence and absence of impulsive noise. Non-robust and robust detectors are analyzed. In the first case we know a priori the distribution of the test statistic, whereas the second assumes only the knowledge of some moments of this statistic. Four detection techniques are discussed: the energy detection, the detection by the ratio between the maximum eigenvalue and noise variance, the detection by the ratio between the maximum and minimum eigenvalues and the test of generalized likelihood ratio test. The design and performance evaluation of the detectors are made under the influence of impulsive noise. It appears that the performances of non-adaptive and adaptive detectors are similar in the absence of impulsive noise for all the techniques evaluated. However, it is observed that the adaptive detector offers superior performance under impulsive noise, with emphasis on the detection technique based on the generalized likelihood ratio test. The robust adaptive detectors, regardless of the detection technique, shows superior performance compared to non-robust ones under impulsive noise, with the additional advantage of not requiring a priori information about the distribution of the test statistic. |
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Guimar?es, Dayan Adionel739.337.836-15http://lattes.cnpq.br/2503439503631682Guimar?es, Dayan Adionel739.337.836-15http://lattes.cnpq.br/2503439503631682Souza, Rausley Adriano Amaral de996.751.536-87http://lattes.cnpq.br/6238219709706103Dias, Ugo Silvahttp://lattes.cnpq.br/8701122785988842918.815.876-49http://lattes.cnpq.br/9652575283012236Ribeiro, Carlos Francisco de Almeida Cavalcanti2016-07-08T14:55:08Z2013-04-02Ribeiro, Carlos Francisco de Almeida Cavalcanti. Detectores adaptativos robustos projetados via otimiza??o convexa para sensoriamento espectral em r?dios cognitivos sob ru?do impulsivo. 2013. [80]. Disserta????o( Programa 1) - Instituto Nacional de Telecomunicacoes, [Santa Rita do Sapuca?] .http://tede.inatel.br:8080/tede/handle/tede/38This master thesis proposes a new approach for the design of optimal adaptive detectors for centralized cooperative spectrum sensing based on the eigenvalues of the received signal covariance matrix. The project is treated as a convex optimization problem from which detectors are developed under the minimax criterion, adapted to the presence and absence of impulsive noise. Non-robust and robust detectors are analyzed. In the first case we know a priori the distribution of the test statistic, whereas the second assumes only the knowledge of some moments of this statistic. Four detection techniques are discussed: the energy detection, the detection by the ratio between the maximum eigenvalue and noise variance, the detection by the ratio between the maximum and minimum eigenvalues and the test of generalized likelihood ratio test. The design and performance evaluation of the detectors are made under the influence of impulsive noise. It appears that the performances of non-adaptive and adaptive detectors are similar in the absence of impulsive noise for all the techniques evaluated. However, it is observed that the adaptive detector offers superior performance under impulsive noise, with emphasis on the detection technique based on the generalized likelihood ratio test. The robust adaptive detectors, regardless of the detection technique, shows superior performance compared to non-robust ones under impulsive noise, with the additional advantage of not requiring a priori information about the distribution of the test statistic.Nesta disserta??o prop?e-se uma nova abordagem para o projeto de detectores ?timos adaptativos para sensoriamento espectral cooperativo com decis?o centralizada e baseado nos autovalores da matriz de covari?ncia do sinal recebido. O projeto ? tratado como um problema de otimiza??o convexa a partir do qual s?o desenvolvidos detectores sob o crit?rio minimax, adaptados ? presen?a e aus?ncia de ru?do impulsivo. Detectores n?o robustos e robustos s?o analisados. No primeiro caso se conhece a priori a distribui??o da estat?stica de teste de hip?teses, enquanto no segundo admite-se apenas o conhecimento de alguns momentos desta estat?stica. Quatro t?cnicas de detec??o s?o analisadas: a detec??o de energia, a detec??o pela rela??o entre o m?ximo autovalor e a vari?ncia de ru?do, a detec??o pela rela??o entre o m?ximo e m?nimo autovalores e o teste de raz?o de verossimilhan?a generalizado. O projeto e a avalia??o de desempenho dos detectores s?o realizados sob influ?ncia de ru?do impulsivo. Verifica-se que os desempenhos dos detectores adaptativos e n?o adaptativos s?o similares na aus?ncia de ru?do impulsivo, para todas as t?cnicas avaliadas. Entretanto, observa-se que o detector adaptativo apresenta desempenho superior sob ru?do impulsivo, principalmente nas situa??es de alta rela??o sinal-ru?do e alta pot?ncia de ru?do impulsivo. Os detectores adaptativos robustos, independente da t?cnica de detec??o, revelam superioridade de desempenho em rela??o aos n?o robustos sob ru?do impulsivo, com a vantagem adicional de n?o requererem informa??o a priori sobre a distribui??o da estat?stica de teste.Submitted by Tede Dspace (tede@inatel.br) on 2016-07-08T14:55:08Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Disserta??o V.Final CARLOS FRANCISCO DE ALMEIDA.pdf: 2849981 bytes, checksum: 86ae6542cdbc34d24048672bc167e9b6 (MD5)Made available in DSpace on 2016-07-08T14:55:08Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Disserta??o V.Final CARLOS FRANCISCO DE ALMEIDA.pdf: 2849981 bytes, checksum: 86ae6542cdbc34d24048672bc167e9b6 (MD5) Previous issue date: 2013-04-02application/pdfhttp://tede.inatel.br:8080/jspui/retrieve/414/Disserta%c3%a7%c3%a3o%20V.Final%20CARLOS%20FRANCISCO%20DE%20ALMEIDA.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/openAccessCVX; detector adaptativo; detector minimax, detector minimax robusto; otimiza??o convexa; r?dio cognitivo; ru?do impulsivo; sensoriamento espectral por autovaloresEngenharia - Telecomunica??esDetectores adaptativos robustos projetados via otimiza??o convexa para sensoriamento espectral em r?dios cognitivos sob ru?do impulsivoinfo: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/38/1/license.txtc6279291b293f0db82678eaa73a27769MD51CC-LICENSElicense_urllicense_urltext/plain; charset=utf-846http://localhost:8080/tede/bitstream/tede/38/2/license_url587cd8ffae15c8598ed3c46d248a3f38MD52license_textlicense_texttext/html; charset=utf-80http://localhost:8080/tede/bitstream/tede/38/3/license_textd41d8cd98f00b204e9800998ecf8427eMD53license_rdflicense_rdfapplication/rdf+xml; charset=utf-80http://localhost:8080/tede/bitstream/tede/38/4/license_rdfd41d8cd98f00b204e9800998ecf8427eMD54ORIGINALDisserta??o V.Final CARLOS FRANCISCO DE ALMEIDA.pdfDisserta??o V.Final CARLOS FRANCISCO DE ALMEIDA.pdfapplication/pdf2849981http://localhost:8080/tede/bitstream/tede/38/5/Disserta%C3%A7%C3%A3o+V.Final+CARLOS+FRANCISCO+DE+ALMEIDA.pdf86ae6542cdbc34d24048672bc167e9b6MD55TEXTDisserta??o V.Final CARLOS FRANCISCO DE ALMEIDA.pdf.txtDisserta??o V.Final CARLOS FRANCISCO DE ALMEIDA.pdf.txttext/plain142519http://localhost:8080/tede/bitstream/tede/38/6/Disserta%C3%A7%C3%A3o+V.Final+CARLOS+FRANCISCO+DE+ALMEIDA.pdf.txt02238f508fc584d2c89d0f5d142d1e82MD56THUMBNAILDisserta??o V.Final CARLOS FRANCISCO DE ALMEIDA.pdf.jpgDisserta??o V.Final CARLOS FRANCISCO DE ALMEIDA.pdf.jpgimage/jpeg6201http://localhost:8080/tede/bitstream/tede/38/7/Disserta%C3%A7%C3%A3o+V.Final+CARLOS+FRANCISCO+DE+ALMEIDA.pdf.jpg7fdcaf3ed80e0d8a4d2d678dc51a34ffMD57tede/382018-04-17 12:06:12.188oai:localhost:tede/38QXV0b3Jpem8gYSBwdWJsaWNhPz9vIGRhIG1pbmhhIERpc3NlcnRhPz9vIGRlIE1lc3RyYWRvLCBlbSBmb3JtYXRvIFBERiwgY29tIGJsb3F1ZWlvIGRlIGVkaT8/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:2018-04-17T15:06:12Biblioteca Digital de Teses e Dissertações da INATEL - Instituto Nacional de Telecomunicações (INATEL)false |
dc.title.por.fl_str_mv |
Detectores adaptativos robustos projetados via otimiza??o convexa para sensoriamento espectral em r?dios cognitivos sob ru?do impulsivo |
title |
Detectores adaptativos robustos projetados via otimiza??o convexa para sensoriamento espectral em r?dios cognitivos sob ru?do impulsivo |
spellingShingle |
Detectores adaptativos robustos projetados via otimiza??o convexa para sensoriamento espectral em r?dios cognitivos sob ru?do impulsivo Ribeiro, Carlos Francisco de Almeida Cavalcanti CVX; detector adaptativo; detector minimax, detector minimax robusto; otimiza??o convexa; r?dio cognitivo; ru?do impulsivo; sensoriamento espectral por autovalores Engenharia - Telecomunica??es |
title_short |
Detectores adaptativos robustos projetados via otimiza??o convexa para sensoriamento espectral em r?dios cognitivos sob ru?do impulsivo |
title_full |
Detectores adaptativos robustos projetados via otimiza??o convexa para sensoriamento espectral em r?dios cognitivos sob ru?do impulsivo |
title_fullStr |
Detectores adaptativos robustos projetados via otimiza??o convexa para sensoriamento espectral em r?dios cognitivos sob ru?do impulsivo |
title_full_unstemmed |
Detectores adaptativos robustos projetados via otimiza??o convexa para sensoriamento espectral em r?dios cognitivos sob ru?do impulsivo |
title_sort |
Detectores adaptativos robustos projetados via otimiza??o convexa para sensoriamento espectral em r?dios cognitivos sob ru?do impulsivo |
author |
Ribeiro, Carlos Francisco de Almeida Cavalcanti |
author_facet |
Ribeiro, Carlos Francisco de Almeida Cavalcanti |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Guimar?es, Dayan Adionel |
dc.contributor.advisor1ID.fl_str_mv |
739.337.836-15 |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/2503439503631682 |
dc.contributor.referee1.fl_str_mv |
Guimar?es, Dayan Adionel |
dc.contributor.referee1ID.fl_str_mv |
739.337.836-15 |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/2503439503631682 |
dc.contributor.referee2.fl_str_mv |
Souza, Rausley Adriano Amaral de |
dc.contributor.referee2ID.fl_str_mv |
996.751.536-87 |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/6238219709706103 |
dc.contributor.referee3.fl_str_mv |
Dias, Ugo Silva |
dc.contributor.referee3Lattes.fl_str_mv |
http://lattes.cnpq.br/8701122785988842 |
dc.contributor.authorID.fl_str_mv |
918.815.876-49 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/9652575283012236 |
dc.contributor.author.fl_str_mv |
Ribeiro, Carlos Francisco de Almeida Cavalcanti |
contributor_str_mv |
Guimar?es, Dayan Adionel Guimar?es, Dayan Adionel Souza, Rausley Adriano Amaral de Dias, Ugo Silva |
dc.subject.por.fl_str_mv |
CVX; detector adaptativo; detector minimax, detector minimax robusto; otimiza??o convexa; r?dio cognitivo; ru?do impulsivo; sensoriamento espectral por autovalores |
topic |
CVX; detector adaptativo; detector minimax, detector minimax robusto; otimiza??o convexa; r?dio cognitivo; ru?do impulsivo; sensoriamento espectral por autovalores Engenharia - Telecomunica??es |
dc.subject.cnpq.fl_str_mv |
Engenharia - Telecomunica??es |
description |
This master thesis proposes a new approach for the design of optimal adaptive detectors for centralized cooperative spectrum sensing based on the eigenvalues of the received signal covariance matrix. The project is treated as a convex optimization problem from which detectors are developed under the minimax criterion, adapted to the presence and absence of impulsive noise. Non-robust and robust detectors are analyzed. In the first case we know a priori the distribution of the test statistic, whereas the second assumes only the knowledge of some moments of this statistic. Four detection techniques are discussed: the energy detection, the detection by the ratio between the maximum eigenvalue and noise variance, the detection by the ratio between the maximum and minimum eigenvalues and the test of generalized likelihood ratio test. The design and performance evaluation of the detectors are made under the influence of impulsive noise. It appears that the performances of non-adaptive and adaptive detectors are similar in the absence of impulsive noise for all the techniques evaluated. However, it is observed that the adaptive detector offers superior performance under impulsive noise, with emphasis on the detection technique based on the generalized likelihood ratio test. The robust adaptive detectors, regardless of the detection technique, shows superior performance compared to non-robust ones under impulsive noise, with the additional advantage of not requiring a priori information about the distribution of the test statistic. |
publishDate |
2013 |
dc.date.issued.fl_str_mv |
2013-04-02 |
dc.date.accessioned.fl_str_mv |
2016-07-08T14:55:08Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
Ribeiro, Carlos Francisco de Almeida Cavalcanti. Detectores adaptativos robustos projetados via otimiza??o convexa para sensoriamento espectral em r?dios cognitivos sob ru?do impulsivo. 2013. [80]. 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/38 |
identifier_str_mv |
Ribeiro, Carlos Francisco de Almeida Cavalcanti. Detectores adaptativos robustos projetados via otimiza??o convexa para sensoriamento espectral em r?dios cognitivos sob ru?do impulsivo. 2013. [80]. Disserta????o( Programa 1) - Instituto Nacional de Telecomunicacoes, [Santa Rita do Sapuca?] . |
url |
http://tede.inatel.br:8080/tede/handle/tede/38 |
dc.language.iso.fl_str_mv |
por |
language |
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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application/pdf |
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Instituto Nacional de Telecomunica??es |
dc.publisher.program.fl_str_mv |
Mestrado em Engenharia de Telecomunica??es |
dc.publisher.initials.fl_str_mv |
INATEL |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Instituto Nacional de Telecomunica??es |
publisher.none.fl_str_mv |
Instituto Nacional de Telecomunica??es |
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