The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 04, 2006
Filed:
Jun. 10, 1998
Sven-rune Olofsson, Lulea, SE;
Joachim Johansson, Lulea, SE;
Mikael Isaksson, Lulea, SE;
Hans Ohman, Lulea, SE;
Daniel Bengtsson, Lulea, SE;
Lennart Olsson, Lulea, SE;
Anders Isaksson, Lulea, SE;
Goran Okvist, Lulea, SE;
Lis-mari Ljunggren, Lulea, SE;
Hans Lungberg, Lulea, SE;
Tomas Stefansson, Boden, SE;
Gunnar Bahlenberg, Lulea, SE;
Siwert Hakansson, Jarfalla, SE;
Magnus Johansson, Lulea, SE;
Sven-Rune Olofsson, Lulea, SE;
Joachim Johansson, Lulea, SE;
Mikael Isaksson, Lulea, SE;
Hans Ohman, Lulea, SE;
Daniel Bengtsson, Lulea, SE;
Lennart Olsson, Lulea, SE;
Anders Isaksson, Lulea, SE;
Goran Okvist, Lulea, SE;
Lis-Mari Ljunggren, Lulea, SE;
Hans Lungberg, Lulea, SE;
Tomas Stefansson, Boden, SE;
Gunnar Bahlenberg, Lulea, SE;
Siwert Hakansson, Jarfalla, SE;
Magnus Johansson, Lulea, SE;
STMicroelectronics N.V., Amsterdam, NL;
Abstract
A VDSL-modem which is divided into an analog part which is placed in an optical node and a digital part which is placed in a local station. The analog part of the VDSL-modem includes an A/D-converter and D/A-converter, a filter, an amplifier, a hybrid/balun, an adaptive noise attenuator, an optical interface, and possibly an echo canceller. The digital part of the modem includes an FFT/IFFT-processor, a synchronizer, an equalizer, an interleaving unit, an error correction unit, a protocol manager, and an optical interface. The VDSL-modem simplifies synchronization of the modem and reduces power consumption in the optical node. A multiplexor function in the optical node in addition is simpler because it need not manage a protocol.