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:
Nov. 16, 2010
Filed:
May. 20, 2008
Patrick Duvaut, Tinton Falls, NJ (US);
Amitkumar Mahadevan, Eatontown, NJ (US);
Pravesh Biyani, Raipur, IN;
Shailendra Singh, Unnao, IN;
Satyavardhan Maheshwari, Noida, IN;
Patrick Duvaut, Tinton Falls, NJ (US);
Amitkumar Mahadevan, Eatontown, NJ (US);
Pravesh Biyani, Raipur, IN;
Shailendra Singh, Unnao, IN;
Satyavardhan Maheshwari, Noida, IN;
Ikanos Communications, Inc., Fremont, CA (US);
Abstract
A method is described for reducing self-induced far end crosstalk (self-FEXT) in a multiple input multiple output (MIMO) digital subscriber line (xDSL) system. An initial value for an off-diagonal multiple input multiple output canceller (ODMC) is derived while the ODMC is inactive and while in data mode. The method includes activating the initial ODMC and converging towards an steady-state value for the ODMC by performing an adaptive algorithm to maximize the Shannon's capacity of the system and to reduce upstream self-FEXT. Bit loading is performed and a frequency domain equalizer (FEQ) is updated.