Modelagem para o c?lculo da perda no percurso de propaga??o em ?reas residenciais nas faixas de VHF e UHF
Autor(a) principal: | |
---|---|
Data de Publicação: | 2004 |
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/81 |
Resumo: | The implementation of digital fixed wireless communication systems, such as digital FM, digital TV (HDTV), WLL (Wireless Local Loop) systems and wireless LANs, require high level of accuracy of propagation prediction in the VHF and UHF bands. This work presents a theoretical model that estimate the average path loss in the propagation between transmission and reception antennas at urban environments, for fixed communications systems. The method is a generalization of the model developed for UHF propagation at urban environments. The modeling presents the average path loss of electromagnetic waves, with good precision for frequencies from 30MHz to 3GHz. The obstacles, in this case the building, are replaced by screens with electromagnetic characteristics. The propagation must occur above and through these structures and the field that crosses each screen are obtained with physical optics approaches. The reflections on the ground are included in calculating the resulting field. Assuming that the signal propagates from a transmission antenna, installed in raised heights, to reception antenna, installed in the average buildings heights, to get the waves incidence angle at the reception point. The representation of the building height variation is gotten with the uniform probability distribution. From the random signal gotten in the simulations, the average strength field is acquired, that normalized give the path loss. Results are obtained for frequency variation, spacing between building and incidence angle of the analyzed signal. The simulations are carried out in MATLAB? platform and the results are in agreement with prediction models and field strength measurements data published in periodicals. |
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Ribeiro, Jos? Ant?nio Justino012.620.256-72http://lattes.cnpq.br/9987344139958522Ribeiro, Jos? Ant?nio Justino012.620.256-72http://lattes.cnpq.br/9987344139958522Corte, Jos? Antoniohttp://lattes.cnpq.br/3323557941512110Silveira, Mauriciohttp://lattes.cnpq.br/1509854946762583Escudero, Anderson2017-01-10T17:15:53Z2004-06-04Escudero, Anderson. Modelagem para o c?lculo da perda no percurso de propaga??o em ?reas residenciais nas faixas de VHF e UHF. 2004. [100]. 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/81The implementation of digital fixed wireless communication systems, such as digital FM, digital TV (HDTV), WLL (Wireless Local Loop) systems and wireless LANs, require high level of accuracy of propagation prediction in the VHF and UHF bands. This work presents a theoretical model that estimate the average path loss in the propagation between transmission and reception antennas at urban environments, for fixed communications systems. The method is a generalization of the model developed for UHF propagation at urban environments. The modeling presents the average path loss of electromagnetic waves, with good precision for frequencies from 30MHz to 3GHz. The obstacles, in this case the building, are replaced by screens with electromagnetic characteristics. The propagation must occur above and through these structures and the field that crosses each screen are obtained with physical optics approaches. The reflections on the ground are included in calculating the resulting field. Assuming that the signal propagates from a transmission antenna, installed in raised heights, to reception antenna, installed in the average buildings heights, to get the waves incidence angle at the reception point. The representation of the building height variation is gotten with the uniform probability distribution. From the random signal gotten in the simulations, the average strength field is acquired, that normalized give the path loss. Results are obtained for frequency variation, spacing between building and incidence angle of the analyzed signal. The simulations are carried out in MATLAB? platform and the results are in agreement with prediction models and field strength measurements data published in periodicals.A implementa??o de sistemas digitais fixos de comunica??o sem fio como FM digital, TV de alta defini??o (HDTV), redes de comunica??es sem fio (WLL e LANs), requerem exatid?o na predi??o da propaga??o nas faixas de VHF e UHF. Este trabalho apresenta um modelo te?rico para a estimativa da perda m?dia nessas faixas, no percurso entre as antenas de transmiss?o e recep??o em ?reas residenciais, para sistemas de comunica??o fixos. O m?todo ? uma generaliza??o do modelo desenvolvido originalmente para propaga??o na banda de UHF. A modelagem apresenta a perda m?dia na propaga??o de ondas eletromagn?ticas em ?reas urbanas, com grande precis?o para freq??ncias entre 30MHz e 3GHz. Os obst?culos, neste caso edifica??es, s?o substitu?dos por l?minas de espessura equivalente, com propriedades eletromagn?ticas adequadas. A propaga??o ocorre acima e atrav?s dessas estruturas e o campo que atravessa cada l?mina ? avaliado com o aux?lio das abordagens deduzidas da ?ptica f?sica. Consideram-se tamb?m as reflex?es no solo na composi??o campo final. Para se obter o ?ngulo de incid?ncia das ondas no ponto de recep??o, admite-se que o sinal propaga de uma antena de transmiss?o, instalada em alturas elevadas, para uma antena de recep??o, instalada na altura m?dia dos pr?dios. Na representa??o das varia??es aleat?rias de altura das constru??es ? empregada a distribui??o uniforme de probabilidade. A partir do sinal aleat?rio obtido nas simula??es ? retirado o valor m?dio do campo, que fornece a perda no percurso. T?m-se os resultados a partir da varia??o de freq??ncia, espa?amento entre pr?dio e ?ngulo de incid?ncia do sinal analisado. As simula??es s?o realizadas na plataforma MATLAB? e os resultados s?o confrontados com outros modelos e dados de medidas realizadas em campo divulgadas em publica??es especializadas.Submitted by Tede Dspace (tede@inatel.br) on 2017-01-10T17:15:53Z No. of bitstreams: 2 disserta??o_corr1.pdf: 1556677 bytes, checksum: 6bb0d33f75dcd3668d98dcfbb5cfc5b7 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)Made available in DSpace on 2017-01-10T17:15:53Z (GMT). No. of bitstreams: 2 disserta??o_corr1.pdf: 1556677 bytes, checksum: 6bb0d33f75dcd3668d98dcfbb5cfc5b7 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2004-06-04application/pdfhttp://tede.inatel.br:8080/jspui/retrieve/716/disserta%c3%a7%c3%a3o_corr1.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/openAccessDifra??o; dispers?o; modelagem da perda no percurso; perda em grande escala; propaga??o; reflex?oEngenharia - Telecomunica??esModelagem para o c?lculo da perda no percurso de propaga??o em ?reas residenciais nas faixas de VHF e UHFinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisreponame:Biblioteca Digital de Teses e Dissertações da INATELinstname:Instituto Nacional de Telecomunicações (INATEL)instacron:INATELORIGINALdisserta??o_corr1.pdfdisserta??o_corr1.pdfapplication/pdf1556677http://localhost:8080/tede/bitstream/tede/81/5/disserta%C3%A7%C3%A3o_corr1.pdf6bb0d33f75dcd3668d98dcfbb5cfc5b7MD55TEXTdisserta??o_corr1.pdf.txtdisserta??o_corr1.pdf.txttext/plain157947http://localhost:8080/tede/bitstream/tede/81/6/disserta%C3%A7%C3%A3o_corr1.pdf.txt7d97090eca1b7973428d78d9f9848384MD56THUMBNAILdisserta??o_corr1.pdf.jpgdisserta??o_corr1.pdf.jpgimage/jpeg1943http://localhost:8080/tede/bitstream/tede/81/7/disserta%C3%A7%C3%A3o_corr1.pdf.jpgcc73c4c239a4c332d642ba1e7c7a9fb2MD57LICENSElicense.txtlicense.txttext/plain; charset=utf-8112http://localhost:8080/tede/bitstream/tede/81/1/license.txtc6279291b293f0db82678eaa73a27769MD51CC-LICENSElicense_urllicense_urltext/plain; charset=utf-846http://localhost:8080/tede/bitstream/tede/81/2/license_url587cd8ffae15c8598ed3c46d248a3f38MD52license_textlicense_texttext/html; charset=utf-80http://localhost:8080/tede/bitstream/tede/81/3/license_textd41d8cd98f00b204e9800998ecf8427eMD53license_rdflicense_rdfapplication/rdf+xml; charset=utf-80http://localhost:8080/tede/bitstream/tede/81/4/license_rdfd41d8cd98f00b204e9800998ecf8427eMD54tede/812018-04-19 14:23:17.957oai:localhost:tede/81QXV0b3Jpem8gYSBwdWJsaWNhPz9vIGRhIG1pbmhhIERpc3NlcnRhPz9vIGRlIE1lc3RyYWRvLCBlbSBmb3JtYXRvIFBERiwgY29tIGJsb3F1ZWlvIGRlIGVkaT8/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:2018-04-19T17:23:17Biblioteca Digital de Teses e Dissertações da INATEL - Instituto Nacional de Telecomunicações (INATEL)false |
dc.title.por.fl_str_mv |
Modelagem para o c?lculo da perda no percurso de propaga??o em ?reas residenciais nas faixas de VHF e UHF |
title |
Modelagem para o c?lculo da perda no percurso de propaga??o em ?reas residenciais nas faixas de VHF e UHF |
spellingShingle |
Modelagem para o c?lculo da perda no percurso de propaga??o em ?reas residenciais nas faixas de VHF e UHF Escudero, Anderson Difra??o; dispers?o; modelagem da perda no percurso; perda em grande escala; propaga??o; reflex?o Engenharia - Telecomunica??es |
title_short |
Modelagem para o c?lculo da perda no percurso de propaga??o em ?reas residenciais nas faixas de VHF e UHF |
title_full |
Modelagem para o c?lculo da perda no percurso de propaga??o em ?reas residenciais nas faixas de VHF e UHF |
title_fullStr |
Modelagem para o c?lculo da perda no percurso de propaga??o em ?reas residenciais nas faixas de VHF e UHF |
title_full_unstemmed |
Modelagem para o c?lculo da perda no percurso de propaga??o em ?reas residenciais nas faixas de VHF e UHF |
title_sort |
Modelagem para o c?lculo da perda no percurso de propaga??o em ?reas residenciais nas faixas de VHF e UHF |
author |
Escudero, Anderson |
author_facet |
Escudero, Anderson |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Ribeiro, Jos? Ant?nio Justino |
dc.contributor.advisor1ID.fl_str_mv |
012.620.256-72 |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/9987344139958522 |
dc.contributor.referee1.fl_str_mv |
Ribeiro, Jos? Ant?nio Justino |
dc.contributor.referee1ID.fl_str_mv |
012.620.256-72 |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/9987344139958522 |
dc.contributor.referee2.fl_str_mv |
Corte, Jos? Antonio |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/3323557941512110 |
dc.contributor.referee3.fl_str_mv |
Silveira, Mauricio |
dc.contributor.referee3Lattes.fl_str_mv |
http://lattes.cnpq.br/1509854946762583 |
dc.contributor.author.fl_str_mv |
Escudero, Anderson |
contributor_str_mv |
Ribeiro, Jos? Ant?nio Justino Ribeiro, Jos? Ant?nio Justino Corte, Jos? Antonio Silveira, Mauricio |
dc.subject.por.fl_str_mv |
Difra??o; dispers?o; modelagem da perda no percurso; perda em grande escala; propaga??o; reflex?o |
topic |
Difra??o; dispers?o; modelagem da perda no percurso; perda em grande escala; propaga??o; reflex?o Engenharia - Telecomunica??es |
dc.subject.cnpq.fl_str_mv |
Engenharia - Telecomunica??es |
description |
The implementation of digital fixed wireless communication systems, such as digital FM, digital TV (HDTV), WLL (Wireless Local Loop) systems and wireless LANs, require high level of accuracy of propagation prediction in the VHF and UHF bands. This work presents a theoretical model that estimate the average path loss in the propagation between transmission and reception antennas at urban environments, for fixed communications systems. The method is a generalization of the model developed for UHF propagation at urban environments. The modeling presents the average path loss of electromagnetic waves, with good precision for frequencies from 30MHz to 3GHz. The obstacles, in this case the building, are replaced by screens with electromagnetic characteristics. The propagation must occur above and through these structures and the field that crosses each screen are obtained with physical optics approaches. The reflections on the ground are included in calculating the resulting field. Assuming that the signal propagates from a transmission antenna, installed in raised heights, to reception antenna, installed in the average buildings heights, to get the waves incidence angle at the reception point. The representation of the building height variation is gotten with the uniform probability distribution. From the random signal gotten in the simulations, the average strength field is acquired, that normalized give the path loss. Results are obtained for frequency variation, spacing between building and incidence angle of the analyzed signal. The simulations are carried out in MATLAB? platform and the results are in agreement with prediction models and field strength measurements data published in periodicals. |
publishDate |
2004 |
dc.date.issued.fl_str_mv |
2004-06-04 |
dc.date.accessioned.fl_str_mv |
2017-01-10T17:15:53Z |
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 |
Escudero, Anderson. Modelagem para o c?lculo da perda no percurso de propaga??o em ?reas residenciais nas faixas de VHF e UHF. 2004. [100]. 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/81 |
identifier_str_mv |
Escudero, Anderson. Modelagem para o c?lculo da perda no percurso de propaga??o em ?reas residenciais nas faixas de VHF e UHF. 2004. [100]. disserta??o( Mestrado em Engenharia de Telecomunica??es) - Instituto Nacional de Telecomunica??es, [Santa Rita do Sapuca?] . |
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http://tede.inatel.br:8080/tede/handle/tede/81 |
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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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