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:
Jan. 30, 2001
Filed:
Jun. 01, 1999
Mikael Isaksson, Lulea, SE;
Magnus Johansson, Lulea, SE;
Harry Tonvall, Lulea, SE;
Lennart Olsson, Lulea, SE;
Thomas Stefansson, Lulea, SE;
Hans Ohman, Lulea, SE;
Gunnar Bahlenberg, Lulea, SE;
Anders Isaksson, Lulea, SE;
Goran Okvist, Lulea, SE;
Lis-Marie Ljunggren, Lulea, SE;
Tomas Nordstrom, Lulea, SE;
Lars-Ake Isaksson, Lulea, SE;
Daniel Bengtsson, Lulea, SE;
Siwert Hakansson, Lulea, SE;
Ye Wen, Lulea, SE;
Telia AB, Farsta, SE;
Abstract
A multi-carrier transmission system using DMT. It is known to recover a receiver sample and clock from a reserved carrier, a pilot carrier having a fixed phase. A sampling clock oscillator in a receiver is then phase locked to the pilot carrier. Multi-carrier receivers, such as DMT receivers, are normally equipped with an FFT processor. A complex number representing the pilot carrier is then available from the FFT processor output. If an FFT processor is not available, a one frequency DFT processor can be provided to produce a complex estimate of the pilot carrier. In a DMT system, frame synchronization is handled separately from sampling clock synchronization, although the two processes are intimately related and frame synchronization must be acquired before sampling clock synchronization.