公开(公告)号：DE69807486D1

公开(公告)日：2002-10-02

申请号：DE69807486

申请日：1998-06-10

Applicant: ST MICROELECTRONICS NV

Inventor： OLOFSSON SVEN-RUNE ,  JOHANSSON JOACHIM ,  ISAKSSON MIKAEL ,  OEHMAN HANS ,  BENGTSSON DANIEL ,  OLSSON LENNART ,  ISAKSSON ANDERS ,  OEKVIST GOERAN ,  LJUNGGREN LIS-MARI ,  LUNDBERG HANS ,  STEFANSSON TOMAS ,  BAHLENBERG GUNNAR ,  HAKANSSON SIVERT ,  JOHANSSON MAGNUS

IPC: H04B10/00 ,  H04J3/06 ,  H04L7/00 ,  H04N1/00 ,  H04L7/08

Abstract: 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.