{"title":"Call Admission Control for QoS provisioning in Multimedia All-IP Wireless and Mobile Networks","authors":"K. Dias, S. F. L. Fernades, D. Sadok","doi":"10.14209/sbrt.2003.777","DOIUrl":"https://doi.org/10.14209/sbrt.2003.777","url":null,"abstract":"","PeriodicalId":325953,"journal":{"name":"Anais do XX Simpósio Brasileiro de Telecomunicações","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117123885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Análise de Filas M | M |n com Servidores Lentos e Usuários Não Informados","authors":"F. Cabral","doi":"10.14209/sbrt.2003.487","DOIUrl":"https://doi.org/10.14209/sbrt.2003.487","url":null,"abstract":"","PeriodicalId":325953,"journal":{"name":"Anais do XX Simpósio Brasileiro de Telecomunicações","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114319076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
—This work addresses the analysis of electromagnetically coupled microstrip antennas printed on uniaxial substrates from the perspective of computational implementation. It also describes the basic steps involved in the formulation of the method of moments and the numerical procedure for solving integrals in the impedance matrix
{"title":"Análise de Antenas de Microfita Excitadas por Acoplamento Eletromagnético: Implementação Computacional e Aspectos Numéricos","authors":"V. D. Costa, L. Cividanes, J. Lacava","doi":"10.14209/sbrt.2003.158","DOIUrl":"https://doi.org/10.14209/sbrt.2003.158","url":null,"abstract":"—This work addresses the analysis of electromagnetically coupled microstrip antennas printed on uniaxial substrates from the perspective of computational implementation. It also describes the basic steps involved in the formulation of the method of moments and the numerical procedure for solving integrals in the impedance matrix","PeriodicalId":325953,"journal":{"name":"Anais do XX Simpósio Brasileiro de Telecomunicações","volume":"1509 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120876098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. Jeszensky, T. Abrão, E. Stancanelli, V. A. D. Silva, A. Kuramoto, B. Angélico
Resumo — Neste trabalho foi proposto um Cancelador de Interferência Sucessivo de Grupo (MC-GSIC) para sistemas CDMA adaptado a canais com desvanecimento multipercurso. Particularmente, foi analisado o desempenho do receptor sujeito a canais COST259DCM através de simulação Monte Carlo (MCS). Abstract — In this paper we have proposed a multi-code Group-Wise Successive Interference Cancellation (MC-GSIC) CDMA topology, adapted for multipath fading channels; particularly, we have analysed the performance under COST259DCM channels via Monte Carlo simulation (MCS).
{"title":"Multi-rate Group-Wise Successive Interference Cancellation Structure in COST 259 DCM Channels","authors":"P. Jeszensky, T. Abrão, E. Stancanelli, V. A. D. Silva, A. Kuramoto, B. Angélico","doi":"10.14209/sbrt.2003.443","DOIUrl":"https://doi.org/10.14209/sbrt.2003.443","url":null,"abstract":"Resumo — Neste trabalho foi proposto um Cancelador de Interferência Sucessivo de Grupo (MC-GSIC) para sistemas CDMA adaptado a canais com desvanecimento multipercurso. Particularmente, foi analisado o desempenho do receptor sujeito a canais COST259DCM através de simulação Monte Carlo (MCS). Abstract — In this paper we have proposed a multi-code Group-Wise Successive Interference Cancellation (MC-GSIC) CDMA topology, adapted for multipath fading channels; particularly, we have analysed the performance under COST259DCM channels via Monte Carlo simulation (MCS).","PeriodicalId":325953,"journal":{"name":"Anais do XX Simpósio Brasileiro de Telecomunicações","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114159645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In this note we introduce a new family of wavelets, named Chebyshev wavelets, which are derived from conventional Chebyshev polynomials. Properties of Chebyshev filter banks are investigated, including orthogonality and perfect reconstruction conditions. Chebyshev wavelets of 2nd kind have compact support, their filters possess good selectivity, but they are not orthogonal. The convergence into 2nd kind Chebyshev wavelets via the cascade algorithm is proved by the use of Markov chains theorems. Computational implementation of these wavelets and some clear-cut applications are presented. These wavelets are offered as a choice in wavelet analysis. Keywords— Wavelets, Filter banks, Chebyshev polynomials, Wavelet design.
{"title":"Chebyshev Wavelets","authors":"R. Cintra, Hélio M. de Oliveira, L. R. Soares","doi":"10.14209/sbrt.2003.811","DOIUrl":"https://doi.org/10.14209/sbrt.2003.811","url":null,"abstract":"In this note we introduce a new family of wavelets, named Chebyshev wavelets, which are derived from conventional Chebyshev polynomials. Properties of Chebyshev filter banks are investigated, including orthogonality and perfect reconstruction conditions. Chebyshev wavelets of 2nd kind have compact support, their filters possess good selectivity, but they are not orthogonal. The convergence into 2nd kind Chebyshev wavelets via the cascade algorithm is proved by the use of Markov chains theorems. Computational implementation of these wavelets and some clear-cut applications are presented. These wavelets are offered as a choice in wavelet analysis. Keywords— Wavelets, Filter banks, Chebyshev polynomials, Wavelet design.","PeriodicalId":325953,"journal":{"name":"Anais do XX Simpósio Brasileiro de Telecomunicações","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133923197","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Avaliação de Desempenho de Redes Ad -Hocem um Cenário Típico da Região Amazônica","authors":"M. Margalho, C. Francês, J. W. A. Costa","doi":"10.14209/sbrt.2003.464","DOIUrl":"https://doi.org/10.14209/sbrt.2003.464","url":null,"abstract":"","PeriodicalId":325953,"journal":{"name":"Anais do XX Simpósio Brasileiro de Telecomunicações","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127840051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A New Method For Objective Assessment of Audio Quality","authors":"J. Barbedo, A. Lopes","doi":"10.14209/sbrt.2003.687","DOIUrl":"https://doi.org/10.14209/sbrt.2003.687","url":null,"abstract":"","PeriodicalId":325953,"journal":{"name":"Anais do XX Simpósio Brasileiro de Telecomunicações","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128478512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
— An analytical method for BER determination in DS-WCDMA cellular systems which support services with different requirements on bit rate and performance is proposed, assuming Gaussian approximations for multiple access interference and multipath interference, and modelling interference from neighbour cells as a function of path loss model, mobile user densities on cells and cellular architecture. Resumo — Um método analítico para determinação da taxa de erro de bit em sistemas celulares DS-WCDMA que suportam serviços com diferentes requisitos de taxa de bits e desempenho é proposto, assumindo aproximações gaussianas para interferência de múltiplo acesso e interferência multi-percurso, e modelando a interferência proveniente de células vizinhas como função da perda de percurso, densidade de usuários nas células e arquitetura celular.
{"title":"An Analytical Method for BER Determination in Multi -Rate DS-WCDMA Cellular Systems and Frequency-Selective Rayleigh Fading Channels","authors":"A. Rocha, P. Jeszensky","doi":"10.14209/sbrt.2003.448","DOIUrl":"https://doi.org/10.14209/sbrt.2003.448","url":null,"abstract":"— An analytical method for BER determination in DS-WCDMA cellular systems which support services with different requirements on bit rate and performance is proposed, assuming Gaussian approximations for multiple access interference and multipath interference, and modelling interference from neighbour cells as a function of path loss model, mobile user densities on cells and cellular architecture. Resumo — Um método analítico para determinação da taxa de erro de bit em sistemas celulares DS-WCDMA que suportam serviços com diferentes requisitos de taxa de bits e desempenho é proposto, assumindo aproximações gaussianas para interferência de múltiplo acesso e interferência multi-percurso, e modelando a interferência proveniente de células vizinhas como função da perda de percurso, densidade de usuários nas células e arquitetura celular.","PeriodicalId":325953,"journal":{"name":"Anais do XX Simpósio Brasileiro de Telecomunicações","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122922202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Estatísticas de Segunda Ordem da Combinação por Ganho Igual de Canais Arbitrários","authors":"J. C. S. Santos Filho, M. Yacoub","doi":"10.14209/sbrt.2003.170","DOIUrl":"https://doi.org/10.14209/sbrt.2003.170","url":null,"abstract":"","PeriodicalId":325953,"journal":{"name":"Anais do XX Simpósio Brasileiro de Telecomunicações","volume":"226 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123022447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Adaptive Minimum BER Interference Suppression for DS-CDMA using Averaging Methods in Multipath Fading Channels","authors":"R. D. Lamare, R. Sampaio Neto","doi":"10.14209/sbrt.2003.644","DOIUrl":"https://doi.org/10.14209/sbrt.2003.644","url":null,"abstract":"","PeriodicalId":325953,"journal":{"name":"Anais do XX Simpósio Brasileiro de Telecomunicações","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128429619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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