Ultra high speed crosstalk cancelling technique

Details Ultra high speed crosstalk cancelling technique Ultra high speed crosstalk cancelling technique

2007-01-16

2007-01-16

Pham, Brenda (Department: 2616)

Multiplex communications

Crosstalk suppression

C370S286000

Reexamination Certificate

active

10207441

ABSTRACT:
An ultra-fast crosstalk cancellation technique characterizes crosstalk with a sample set representing NEXT generated by a single transmitted bit. During operation, transmit bit values of transmitted bits are saved in a transmit bit shift register and used to weight crosstalk samples corresponding to a stored transmit value. The weighted transmit samples are summed to generate a crosstalk cancellation signal which is subtracted from a received signal to remove NEXT.

REFERENCES:
patent: 5887032 (1999-03-01), Cioffi
patent: 6236645 (2001-05-01), Agazzi
patent: 6829314 (2004-12-01), Zortea et al.
patent: 7046751 (2006-05-01), Kantschuk et al.
“The Real Truth About Crosstalk”, originally published inElectronic Design Magazine, Aug. 1997, retrieved from the Internet on Oct. 27, 2003: <URL:http://signalintegrity.com/Pubs/straight/crosstalk.htm>.

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