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:
Mar. 31, 2009
Filed:
Oct. 16, 2000
Applicants:
Heikki Laamanen, Espoo, FI;
Janne Väänänen, Espoo, FI;
Inventors:
Heikki Laamanen, Espoo, FI;
Janne Väänänen, Espoo, FI;
Assignee:
Tellabs Oy, Espoo, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 25/49 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention concerns adjustment of tap coefficients of a Tomlinson-Harashima precoder in a digital communications path during a data transmission state. According to the invention, the tap coefficients of the Tomlinson-Harashima precoder are adjusted based on content values of a delay line of the Tomlinson-Harashima precoder and on an error variable associated with a receive. Synchronization between the error value and the content values of the delay line is performed according to line frame synchronization information.