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Detalhes

Detalhes

  • Nome

    Artur Moura
  • Cargo

    Investigador Sénior
  • Desde

    01 novembro 1985
Publicações

1997

A flexible technique for source clock recovery of real-time services in ATM networks

Autores
Moura, AA; Leitao, MJ;

Publicação
IEEE ATM '97 WORKSHOP, PROCEEDINGS

Abstract
This paper addresses source clock recovery in ATM networks for real-time services which require a timing relation between source and destination. A detailed jitter analysis is performed for the synchronous methods, from which a simple design approach is suggested for the clock recovery system. A new timing information transport protocol is proposed for constant bit rate and variable bit rate real-time services, leading to a unified ATM Adaptation Layer for both types of services. The method presented is called Generic Synchronous Technique (GST) and exhibits the following properties: (a) good control on its parameters to satisfy jitter objectives;(b) decoupling between timing and service information; (c) efficient coding leading to reduced overhead; (d) good transmission error immunity and (e) simple implementation. As a case study, it is shown that GST provides adequate clock recovery for MPEG video signals, in the most stringent case when the reconstructed system clock is used to derive a chrominance sub-carrier for use in composite video.

Teses
supervisionadas

2019

Energy Harvesting para módulos IOT

Autor
Eduardo Clemente Sobrinho

Instituição
UP-FEUP

2018

Energy Harvesting para módulos IOT

Autor
Eduardo Clemente Sobrinho

Instituição
UP-FEUP

2016

Agrupamentos de antenas planares

Autor
Paulo Daniel Barbosa da Silva

Instituição
UP-FEUP