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:
Sep. 23, 2003
Filed:
Mar. 11, 1999
Lennart Olsson, Lulea, SE;
Gunnar Bahlenberg, Lulea, SE;
Daniel Bengtsson, Lulea, SE;
Siwert Hakansson, Jarfalla, SE;
Anders Isaksson, Lulea, SE;
Lars-Ake Isaksson, Lulea, SE;
Mikael Isaksson, Lulea, SE;
Magnus Johansson, Lulea, SE;
Mauritz Lahti, Lulea, SE;
Lis-Marie Ljunggren, Lulea, SE;
Hans Lundberg, Lulea, SE;
Tomas Nordstrom, Lulea, SE;
Sven-Rune Olofsson, Lulea, SE;
Tomas Stefansson, Boden, SE;
Hans Ohman, Lulea, SE;
Goran Okvist, Lulea, SE;
STMicroelectronics N.V., Amsterdam, NL;
Abstract
A mechanism for achieving frame synchronization in the frequency domain. In order to synchronize a receiver with a transmitter, on signal acquisition, the interval in which orthogonality exists is determined. Once this has been achieved, an argument function is calculated from the received frame. This argument function can then be used to improve the synchronization. This system is particularly suitable for use in ADSL and VDSL modems which can be used to give broad band access over copper networks. It is also relevant to broad band transmission in mobile and semi-mobile systems for transmission over radio channels.