Arrangemang för synkronisering av noder i VDSL-system

An arrangement for synchronization of nodes in VDSL-systems, or more exactly, synchronization of optical VDSL-nodes which share a common part of a cable in the access network between subscribers and a local station. A time synchronization is provided towards an external system, for instance GPS, whi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KARL JOACHIM JOHANSSON, MAGNUS JOHANSSON, TOMAS STEFANSSON, SVEN GOERAN OEKVIST, LENNART OLSSON, ANDERS IMANUEL ISAKSSON, DANIEL BENGTSSON, HANS LUNDBERG, SVEN-RUNE OLOFSSON, LIS-MARI LJUNGGREN, HANS OEHMAN, MIKAEL ISAKSSON, KJELL G BAHLENBERG, SIWERT HAAKANSSON
Format:	Patent
Sprache:	swe
Schlagworte:	ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY MULTIPLEX COMMUNICATION PICTORIAL COMMUNICATION, e.g. TELEVISION TRANSMISSION TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Beschreibung
Zusammenfassung:	An arrangement for synchronization of nodes in VDSL-systems, or more exactly, synchronization of optical VDSL-nodes which share a common part of a cable in the access network between subscribers and a local station. A time synchronization is provided towards an external system, for instance GPS, which gives a time reference by which the different nodes can be synchronized. The synchronization reduces the near end cross-talk between the VDSL-systems in the different nodes. Preferably, each respective node includes a receiver for a synchronization signal and an internal oscillator with high stability to deliver a stable clock signal.