Modelos paramétricos simples e causais para cabos de cobre apropriados para caracterização de enlaces em sistemas G.fast
The G.fast is a new standard from the International Telecommunication Union that targets 1 Gb/s over short copper loops, using frequencies up to 212 MHz. This new technology requires accurate parametric cable models for simulation, design and performance evaluation tests. Most existing copper cab...
| Autor principal: | NUNES, Diogo Lobato Acatauassú |
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| Grau: | Tese |
| Idioma: | por |
| Publicado em: |
Universidade Federal do Pará
2015
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.ufpa.br/jspui/handle/2011/6695 |
| Resumo: |
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The G.fast is a new standard from the International Telecommunication Union that
targets 1 Gb/s over short copper loops, using frequencies up to 212 MHz. This new technology
requires accurate parametric cable models for simulation, design and performance evaluation
tests. Most existing copper cable models were designed for the VDSL spectra - i.e., frequencies
up to 30 MHz - and adopt assumptions that are violated when the frequency range is extended
to G.fast frequencies. This thesis presents new simple and causal cable models that are able
to accurately characterize copper loops composed by single or multiple segments, in both
frequency and time domains. Results using G.fast topologies show that, besides being accurate,
the new models are attractive due to their low computational cost and closed-form expressions
for fitting their parameters to measurement data. |