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Anais do XXVI Simpósio Brasileiro de Telecomunicações最新文献

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Impacto do Tráfego Handoff no Sistema 3G UMTS/HSDPA Sob Vários Critérios de Aceitação e Escalonadores 在不同的接受标准和调度下，流量切换对3G UMTS/HSDPA系统的影响
Anais do XXVI Simpósio Brasileiro de Telecomunicações Pub Date : 1900-01-01 DOI: 10.14209/sbrt.2008.42368
L. Marques, Shusaburo Motoyama
{"title":"Impacto do Tráfego Handoff no Sistema 3G UMTS/HSDPA Sob Vários Critérios de Aceitação e Escalonadores","authors":"L. Marques, Shusaburo Motoyama","doi":"10.14209/sbrt.2008.42368","DOIUrl":"https://doi.org/10.14209/sbrt.2008.42368","url":null,"abstract":"—In this paper is presented a study of HTTP handoff traffic impact in the forward link of UMTS/HSDPA system. This study is based on the introduction of new criteria for HTTP hand-off traffic acceptance. These criteria are proposed considering the radio signal strength (RSS) and percentage of buffer occupation. Moreover, this study is carried out with acceptance criteria combined with data schedulers Max C/I (Maximum Carrier Interference), PF (Proportional Fair) and new proposal Pr/PF (Priority Proportional Fair). Different criteria and schedulers are evaluated through metrics of QoS in function of handoff traffic load. The results showed that depending on the chosen criterion and scheduler, it is possible to assure the QoS of HSDPA system and still to accept a good amount of handoff traffic.","PeriodicalId":340055,"journal":{"name":"Anais do XXVI Simpósio Brasileiro de Telecomunicações","volume":"237 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":"123082404","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}
引用次数: 0
Simulação de um canal rádio UWB através do modelo auto-regressivo 利用自回归模型模拟超音速无线电信道
Anais do XXVI Simpósio Brasileiro de Telecomunicações Pub Date : 1900-01-01 DOI: 10.14209/sbrt.2008.42703
Fábio da Silva, Leni J. Matos, Edson Cataldo
{"title":"Simulação de um canal rádio UWB através do modelo auto-regressivo","authors":"Fábio da Silva, Leni J. Matos, Edson Cataldo","doi":"10.14209/sbrt.2008.42703","DOIUrl":"https://doi.org/10.14209/sbrt.2008.42703","url":null,"abstract":"","PeriodicalId":340055,"journal":{"name":"Anais do XXVI Simpósio Brasileiro de Telecomunicações","volume":"56 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":"127724713","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}
引用次数: 0
Controle de Admissão para Redes em Malha de Última Milha 最后一英里网状网络的入口控制
Anais do XXVI Simpósio Brasileiro de Telecomunicações Pub Date : 1900-01-01 DOI: 10.14209/sbrt.2008.43165
Edgar Piacentini, Anelise Munaretto, Mauro Fonseca
{"title":"Controle de Admissão para Redes em Malha de Última Milha","authors":"Edgar Piacentini, Anelise Munaretto, Mauro Fonseca","doi":"10.14209/sbrt.2008.43165","DOIUrl":"https://doi.org/10.14209/sbrt.2008.43165","url":null,"abstract":"","PeriodicalId":340055,"journal":{"name":"Anais do XXVI Simpósio Brasileiro de Telecomunicações","volume":"79 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":"124835288","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}
引用次数: 0
Performance Analysis of IEEE 802.11n MAC Enhancements over Block Fading Channels 分组衰落信道下IEEE 802.11n MAC增强的性能分析
Anais do XXVI Simpósio Brasileiro de Telecomunicações Pub Date : 1900-01-01 DOI: 10.14209/sbrt.2008.40134
Roger Pierre, Fabris Hoefel
{"title":"Performance Analysis of IEEE 802.11n MAC Enhancements over Block Fading Channels","authors":"Roger Pierre, Fabris Hoefel","doi":"10.14209/sbrt.2008.40134","DOIUrl":"https://doi.org/10.14209/sbrt.2008.40134","url":null,"abstract":"Assuming a Nakagami-m block fading channel, we derive a theoretical medium access control (MAC) and physical (PHY) cross-layer model to estimate the saturation net throughput of IEEE 802.11 wireless local area networks (WLANs) with MAC enhancements. It is analytically shown that these MAC improvements, that consist of modifications of the plain IEEE 802.11 distribution coordination function (DCF) MAC protocol in order to support concatenation and multiframe transmission techniques, allow a substantial improvement of the net throughput.","PeriodicalId":340055,"journal":{"name":"Anais do XXVI Simpósio Brasileiro de Telecomunicações","volume":"50 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":"133729597","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}
引用次数: 0
Sistema de Semáforos Inteligentes (SSI) para Controle de Fluxo de Veículos Automotivos 用于车辆流量控制的智能交通灯系统(SSI)
Anais do XXVI Simpósio Brasileiro de Telecomunicações Pub Date : 1900-01-01 DOI: 10.14209/sbrt.2008.42232
G. Ferreira, T. Pereira
{"title":"Sistema de Semáforos Inteligentes (SSI) para Controle de Fluxo de Veículos Automotivos","authors":"G. Ferreira, T. Pereira","doi":"10.14209/sbrt.2008.42232","DOIUrl":"https://doi.org/10.14209/sbrt.2008.42232","url":null,"abstract":"– In order to minimize some problems related to car traffic chaos, mainly those concerned to vehicles flux, this paper presents an Intelligent Semaphore System, used to generate better time sequences. The system is based on three main aspects: detection of vehicles, communication between semaphores","PeriodicalId":340055,"journal":{"name":"Anais do XXVI Simpósio Brasileiro de Telecomunicações","volume":"19 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":"121466416","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}
引用次数: 0
Lambda-Conversion using remote fully automated WebLab 使用远程全自动WebLab进行lambda转换
Anais do XXVI Simpósio Brasileiro de Telecomunicações Pub Date : 1900-01-01 DOI: 10.14209/sbrt.2008.42882
H. Bierwagen, N. Ribeiro, E. Barrientos, Matheus Massagardi, C. Gallep, E. Conforti
{"title":"Lambda-Conversion using remote fully automated WebLab","authors":"H. Bierwagen, N. Ribeiro, E. Barrientos, Matheus Massagardi, C. Gallep, E. Conforti","doi":"10.14209/sbrt.2008.42882","DOIUrl":"https://doi.org/10.14209/sbrt.2008.42882","url":null,"abstract":"— A web-lab wavelength converter setup is presented, offering optical services to other laboratories in the Fapesp-KyaTera Optical Network. In addition, optical generation, amplification and filtering, at several gigabits per second, is also available. An Optical Spectrum Analyzer controlled through the Internet provides accurate analyses of filtering, amplification and wavelength conversion.","PeriodicalId":340055,"journal":{"name":"Anais do XXVI Simpósio Brasileiro de Telecomunicações","volume":"234 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":"116864793","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}
引用次数: 0
Análise de Estabilidade do LMS segundo a Teoria de Lyapunov
Anais do XXVI Simpósio Brasileiro de Telecomunicações Pub Date : 1900-01-01 DOI: 10.14209/sbrt.2008.42833
C. Junior, Romis Attux, Ricardo Suyama, J. Romano
{"title":"Análise de Estabilidade do LMS segundo a Teoria de Lyapunov","authors":"C. Junior, Romis Attux, Ricardo Suyama, J. Romano","doi":"10.14209/sbrt.2008.42833","DOIUrl":"https://doi.org/10.14209/sbrt.2008.42833","url":null,"abstract":"— This work presents a stability analysis of the LMS algorithm based on deterministic and stochastic Lyapunov approaches. In both cases it is shown to be possible to obtain expressions for the maximum value of the adaptation step-size without necessarily resorting to simplifying hypotheses such as the independence theory. This reveals interesting perspectives of studies concerning aspects like convergence rate and misadjustment.","PeriodicalId":340055,"journal":{"name":"Anais do XXVI Simpósio Brasileiro de Telecomunicações","volume":"18 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":"117110928","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}
引用次数: 0
Códigos Simplex Descrevem Estados Quânticos com Máximo Emaranhamento Global 单纯形码描述具有最大全局纠缠的量子态
Anais do XXVI Simpósio Brasileiro de Telecomunicações Pub Date : 1900-01-01 DOI: 10.14209/sbrt.2008.42801
W. Gazzoni, Reginaldo Palazzo
{"title":"Códigos Simplex Descrevem Estados Quânticos com Máximo Emaranhamento Global","authors":"W. Gazzoni, Reginaldo Palazzo","doi":"10.14209/sbrt.2008.42801","DOIUrl":"https://doi.org/10.14209/sbrt.2008.42801","url":null,"abstract":"","PeriodicalId":340055,"journal":{"name":"Anais do XXVI Simpósio Brasileiro de Telecomunicações","volume":"88 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":"116024267","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}
引用次数: 0
Roteamento Baseado em Localização em Redes Ad-Hoc Ad-Hoc网络中基于位置的路由
Anais do XXVI Simpósio Brasileiro de Telecomunicações Pub Date : 1900-01-01 DOI: 10.14209/sbrt.2008.42423
José Antonio Casemiro Neto, Marco Maia
{"title":"Roteamento Baseado em Localização em Redes Ad-Hoc","authors":"José Antonio Casemiro Neto, Marco Maia","doi":"10.14209/sbrt.2008.42423","DOIUrl":"https://doi.org/10.14209/sbrt.2008.42423","url":null,"abstract":"","PeriodicalId":340055,"journal":{"name":"Anais do XXVI Simpósio Brasileiro de Telecomunicações","volume":"31 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":"121830558","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}
引用次数: 0
Um Algoritmo Adaptativo para Predição da Regularidade Local de Tráfego de Redes 一种预测本地网络流量规律性的自适应算法
Anais do XXVI Simpósio Brasileiro de Telecomunicações Pub Date : 1900-01-01 DOI: 10.14209/sbrt.2008.42864
F. Vieira, L. Ling, C. Jorge, Jeferson Stênico
{"title":"Um Algoritmo Adaptativo para Predição da Regularidade Local de Tráfego de Redes","authors":"F. Vieira, L. Ling, C. Jorge, Jeferson Stênico","doi":"10.14209/sbrt.2008.42864","DOIUrl":"https://doi.org/10.14209/sbrt.2008.42864","url":null,"abstract":"","PeriodicalId":340055,"journal":{"name":"Anais do XXVI Simpósio Brasileiro de Telecomunicações","volume":"285 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":"114177988","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}
引用次数: 0
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