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:
Jul. 27, 2010
Filed:
Sep. 29, 2003
Ehud Langberg, Wayside, NJ (US);
Patrick Duvaut, Tinton Falls, NJ (US);
Peter Kleewein, Eatontown, NJ (US);
Wolfgang Kleewein, Legal Representative, Vienna, AT;
Laurent Pierrugues, Tinton Falls, NJ (US);
Ehud Langberg, Wayside, NJ (US);
Patrick Duvaut, Tinton Falls, NJ (US);
Peter Kleewein, Eatontown, NJ (US);
Wolfgang Kleewein, legal representative, Vienna, AT;
Laurent Pierrugues, Tinton Falls, NJ (US);
Ikanos Communications, Inc., Fremont, CA (US);
Abstract
A method and system of the present inventions reduces both near-end crosstalk (NEXT) and far-end crosstalk (FEXT) interferences due to handshake tones into upstream and downstream neighboring services, both at the customer premises equipment (CPE) and at the central office (CO), when handshake is experienced. An embodiment of the present inventions is directed to significantly reduce the NEXT and/or FEXT interferences due to handshake tones. For example, NEXT and/or FEXT interferences due to G.994.1 handshake tones, identified as, binsandfor the Upstream channel and binsandfor the Downstream channel may be reduced. An embodiment of the present inventions provides an algorithm that may be used for both NEXT and FEXT Handshake Interferences reduction at the CO and at the CPE. In addition, the algorithm may operate in the time domain and in the frequency domain. Frequency domain algorithm offers two options, both versions taking advantage of the high correlation time of the Handshake tone signals.