Wdm Systems
Mostrando 25-27 de 27 artigos, teses e dissertações.
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25. Analise experimental das aplicações de codigos corretores de erro em sistemas de comunicações opticas
This work presents an experimental analysis on the use of error correcting codes in optical communication systems, specifically by means of the Forward Error Correction (FEC) technique. Two electronic modules were designed and assembled during the experimental stages of the work - a coding and decoding module, which uses the Reed-Solomon RS (255,241) code, a
Publicado em: 2003
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26. PROTECTION E RESTORATION, TOGETHER WITH NODE ADDRESSING AND TMN MANAGEMENT FOR IP OVER DWDM OPTICAL NETWORKS BY USING PHYSICAL LAYER / PROTEÇÃO, RESTAURAÇÃO, ENDEREÇAMENTO E GERENCIAMENTO TMN NA CAMADA FÍSICA PARA APLICAÇÕES IP SOBRE DWDM
The objective of this work is to explore the possibilities of built-in intelligence embedded in the physical layer of an Optical Telecommunications Network, aiming at its future applications. The use of RF subcarriers - introduce above the optical payload through Mach-Zehnder modulators -, associated with multiple acess technologies, allows for protection, r
Publicado em: 2000
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27. Codigos restritos para se reduzir o numero de fotons por bit em transmissão optica : Rony Mark da Silva
The present work aims at the study of line codes for Optical Transmission leading to an economy in the number of photons per bit required by this kind of communication. The codes chosen are those with (d,k) and RLL (Runlength-limited) constraints. A Photonic Efficiency Gain is generically defined, which takes place when a line coding is used. Next, the mathe
Publicado em: 1999