Contribui??es para o m?todo CPSC em redes de r?dios cognitivos

Detalhes bibliográficos
Autor(a) principal: Bomfin, Roberto C?sar Dias Vilela
Data de Publicação: 2016
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/147
Resumo: Recently,anewtechniqueforspectrumsensinginCognitiveRadio(CR)networkshas been proposed named Cooperative Power Spectral density split Cancellation (CPSC). Thistechniquehastheadvantagesofbeingrobustagainstnoiseuncertaintyandhaving low computational complexity. In this dissertation, a new sensing technique was proposed from a simple modi?cation on the CPSC method. Preliminary results showed that the new technique presents better performance than the original one. Also, two CumulativeDistributionFunctions(CDFs)oftwoimportantrandomvariablesforboth proposed and original methods were derived. For each random variable, two solutions with different approaches were presented. The results showed the level of accuracy of the developed CDFs, specially the one from the second approach, in which it is even moreaccuratethantheonepresentedinthepaperoftheoriginalCPSCmethod. Other contribution is the development of two approximate expressions for the Probability of False Alarm (PFA) for the new method. The results showed that one of the solutions happened to be accurate for high values of PFA, while the other for low levels of PFA. Theconclusionisthatthesecondone,whichisaccurateforlowvaluesofPFA,ismore appropriate to be used in practice as the spectrum sensing should work with low PFA. It is worth mentioning that the derived expressions are very useful in practice because theyallowonetoanalyzestatisticallythesystembehavioroftheoriginalandproposed methods.
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spelling Souza, Rausley Adriano Amaral de996.751.536-87http://lattes.cnpq.br/6238219709706103Guimar?es, Dayan Adionel739.337.836-15http://lattes.cnpq.br/2503439503631682Souza, Rausley Adriano Amaral de996.751.536-87http://lattes.cnpq.br/6238219709706103Brito, Jos? Marcos Camara495.450.866-53http://lattes.cnpq.br/0370383210890132Leonardo, Elvio Jo?ohttp://lattes.cnpq.br/3398239861605168086.421.816-80Bomfin, Roberto C?sar Dias Vilela2017-08-14T17:13:16Z2016-07-22Bomfin, Roberto C?sar Dias Vilela. Contribui??es para o m?todo CPSC em redes de r?dios cognitivos. 2016. [78]. disserta??o( Mestrado em Engenharia de Telecomunica??es) - Instituto Nacional de Telecomunica??es, [Santa Rita do Sapuca?] .http://tede.inatel.br:8080/tede/handle/tede/147Recently,anewtechniqueforspectrumsensinginCognitiveRadio(CR)networkshas been proposed named Cooperative Power Spectral density split Cancellation (CPSC). Thistechniquehastheadvantagesofbeingrobustagainstnoiseuncertaintyandhaving low computational complexity. In this dissertation, a new sensing technique was proposed from a simple modi?cation on the CPSC method. Preliminary results showed that the new technique presents better performance than the original one. Also, two CumulativeDistributionFunctions(CDFs)oftwoimportantrandomvariablesforboth proposed and original methods were derived. For each random variable, two solutions with different approaches were presented. The results showed the level of accuracy of the developed CDFs, specially the one from the second approach, in which it is even moreaccuratethantheonepresentedinthepaperoftheoriginalCPSCmethod. Other contribution is the development of two approximate expressions for the Probability of False Alarm (PFA) for the new method. The results showed that one of the solutions happened to be accurate for high values of PFA, while the other for low levels of PFA. Theconclusionisthatthesecondone,whichisaccurateforlowvaluesofPFA,ismore appropriate to be used in practice as the spectrum sensing should work with low PFA. It is worth mentioning that the derived expressions are very useful in practice because theyallowonetoanalyzestatisticallythesystembehavioroftheoriginalandproposed methods.Recentemente, uma nova t?cncia de sensoriamento espectral para redes de R?dios Cognitivos(RCs)foipropostacomonomeCPSC(Cooperative Power Spectrum Density Split Cancellation Method). Essa t?cncia tem as vantagens de ser robusta contra incerteza de ru?do e ter baixa complexidade computacional. Nesta disserta??o foi proposta uma nova t?cnica de sensoriamento a partir de uma simples altera??o no m?todo originalCPSC.Resultadospreliminaresmostraramqueat?cnicamodi?cadaapresenta um melhor desempenho do que a original. Tamb?m foram desenvolvidas Fun??es de Distribui??o Cumulativa (FDCs) para duas vari?veis aleat?rias importantes dos m?todosoriginaleproposto. Paracadavari?velaleat?riaforamapresentadasduassolu??es com abordagens distintas. Os resultados mostraram o grau de exatid?o das express?es desenvolvidas,sobretudodaFDCqueutilizaasegundaabordagem,quesemostrouinclusivesermaisprecisadoqueaquelaapresentadanoartigooriginaldom?todoCPSC. Outra contribui??o ? o desenvolvimento de duas express?es aproximadas para a Probabilidade de Falso Alarme (PFA) para o m?todo proposto. Os resultados revelaram queumadassolu??es ?precisaparaaltoPFA,enquantoaoutra?adequadaparabaixo PFA.Aconclus?o?queasegundaop??o,cujoajuste?bomparabaixosn?veisdePFA, ?maisinteressanteparaserutilizadanapr?ticavistoqueasredesdeRCsdevemoperar com PFA baixo. Vale a pena ressaltar que as express?es desenvolvidas nesta disserta??o s?o bastante ?teis na pr?tica pois possibilitam que se preveja o comportamento estat?stico dos m?todos original e proposto.Submitted by Tede Dspace (tede@inatel.br) on 2017-08-14T17:13:16Z No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Artigo ? 2016 ? Roberto C?sar Dias Vilela Bomfin.pdf: 1107293 bytes, checksum: 021b16a85bacabd2523c0253f96415c8 (MD5)Made available in DSpace on 2017-08-14T17:13:16Z (GMT). No. of bitstreams: 2 license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Artigo ? 2016 ? 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dc.title.por.fl_str_mv Contribui??es para o m?todo CPSC em redes de r?dios cognitivos
title Contribui??es para o m?todo CPSC em redes de r?dios cognitivos
spellingShingle Contribui??es para o m?todo CPSC em redes de r?dios cognitivos
Bomfin, Roberto C?sar Dias Vilela
Sensoriamento espectral; r?dio cognitivo; m?todo CPSC - Cooperative Power Spectral Density Split Cancellation; probabilidade de falso alarme.
Engenharia - Telecomunica??es
title_short Contribui??es para o m?todo CPSC em redes de r?dios cognitivos
title_full Contribui??es para o m?todo CPSC em redes de r?dios cognitivos
title_fullStr Contribui??es para o m?todo CPSC em redes de r?dios cognitivos
title_full_unstemmed Contribui??es para o m?todo CPSC em redes de r?dios cognitivos
title_sort Contribui??es para o m?todo CPSC em redes de r?dios cognitivos
author Bomfin, Roberto C?sar Dias Vilela
author_facet Bomfin, Roberto C?sar Dias Vilela
author_role author
dc.contributor.advisor2ID.por.fl_str_mv 739.337.836-15
dc.contributor.advisor1.fl_str_mv Souza, Rausley Adriano Amaral de
dc.contributor.advisor1ID.fl_str_mv 996.751.536-87
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/6238219709706103
dc.contributor.advisor2.fl_str_mv Guimar?es, Dayan Adionel
dc.contributor.advisor2Lattes.fl_str_mv http://lattes.cnpq.br/2503439503631682
dc.contributor.referee1.fl_str_mv Souza, Rausley Adriano Amaral de
dc.contributor.referee1ID.fl_str_mv 996.751.536-87
dc.contributor.referee1Lattes.fl_str_mv http://lattes.cnpq.br/6238219709706103
dc.contributor.referee2.fl_str_mv Brito, Jos? Marcos Camara
dc.contributor.referee2ID.fl_str_mv 495.450.866-53
dc.contributor.referee2Lattes.fl_str_mv http://lattes.cnpq.br/0370383210890132
dc.contributor.referee3.fl_str_mv Leonardo, Elvio Jo?o
dc.contributor.referee3Lattes.fl_str_mv http://lattes.cnpq.br/3398239861605168
dc.contributor.authorID.fl_str_mv 086.421.816-80
dc.contributor.author.fl_str_mv Bomfin, Roberto C?sar Dias Vilela
contributor_str_mv Souza, Rausley Adriano Amaral de
Guimar?es, Dayan Adionel
Souza, Rausley Adriano Amaral de
Brito, Jos? Marcos Camara
Leonardo, Elvio Jo?o
dc.subject.por.fl_str_mv Sensoriamento espectral; r?dio cognitivo; m?todo CPSC - Cooperative Power Spectral Density Split Cancellation; probabilidade de falso alarme.
topic Sensoriamento espectral; r?dio cognitivo; m?todo CPSC - Cooperative Power Spectral Density Split Cancellation; probabilidade de falso alarme.
Engenharia - Telecomunica??es
dc.subject.cnpq.fl_str_mv Engenharia - Telecomunica??es
description Recently,anewtechniqueforspectrumsensinginCognitiveRadio(CR)networkshas been proposed named Cooperative Power Spectral density split Cancellation (CPSC). Thistechniquehastheadvantagesofbeingrobustagainstnoiseuncertaintyandhaving low computational complexity. In this dissertation, a new sensing technique was proposed from a simple modi?cation on the CPSC method. Preliminary results showed that the new technique presents better performance than the original one. Also, two CumulativeDistributionFunctions(CDFs)oftwoimportantrandomvariablesforboth proposed and original methods were derived. For each random variable, two solutions with different approaches were presented. The results showed the level of accuracy of the developed CDFs, specially the one from the second approach, in which it is even moreaccuratethantheonepresentedinthepaperoftheoriginalCPSCmethod. Other contribution is the development of two approximate expressions for the Probability of False Alarm (PFA) for the new method. The results showed that one of the solutions happened to be accurate for high values of PFA, while the other for low levels of PFA. Theconclusionisthatthesecondone,whichisaccurateforlowvaluesofPFA,ismore appropriate to be used in practice as the spectrum sensing should work with low PFA. It is worth mentioning that the derived expressions are very useful in practice because theyallowonetoanalyzestatisticallythesystembehavioroftheoriginalandproposed methods.
publishDate 2016
dc.date.issued.fl_str_mv 2016-07-22
dc.date.accessioned.fl_str_mv 2017-08-14T17:13:16Z
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dc.identifier.citation.fl_str_mv Bomfin, Roberto C?sar Dias Vilela. Contribui??es para o m?todo CPSC em redes de r?dios cognitivos. 2016. [78]. disserta??o( Mestrado em Engenharia de Telecomunica??es) - Instituto Nacional de Telecomunica??es, [Santa Rita do Sapuca?] .
dc.identifier.uri.fl_str_mv http://tede.inatel.br:8080/tede/handle/tede/147
identifier_str_mv Bomfin, Roberto C?sar Dias Vilela. Contribui??es para o m?todo CPSC em redes de r?dios cognitivos. 2016. [78]. disserta??o( Mestrado em Engenharia de Telecomunica??es) - Instituto Nacional de Telecomunica??es, [Santa Rita do Sapuca?] .
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