Far-end crosstalk (FEXT) canceller

Pulse or digital communications – Receivers – Interference or noise reduction

Reexamination Certificate

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Details

C370S201000

Reexamination Certificate

active

07826568

ABSTRACT:
A novel and useful mechanism for the detection, estimation and correction of far-end cross talk (FEXT) caused by transmissions over adjacent wire pairs or cables. The detection, estimation and correction technique of the invention can be used to identify and compensate for FEXT impairments in Ethernet and DSL systems. The detection, estimation and correction is performed utilizing one of several techniques including linear forward filtering, backward decision feedback based filtering and a combination thereof. Results of simulations are presented illustrating the performance improvements provided by the present invention.

REFERENCES:
patent: 5181198 (1993-01-01), Lechleider
patent: 6553085 (2003-04-01), Trans
patent: 7042934 (2006-05-01), Zamir
patent: 7583724 (2009-09-01), Shirani
patent: 2003/0086362 (2003-05-01), Hasegawa et al.
patent: 2004/0170230 (2004-09-01), Zimmerman et al.
patent: 2006/0114977 (2006-06-01), Ginis et al.

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