Method and apparatus for crosstalk cancellation

Pulse or digital communications – Cable systems and components

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

375346, 375350, 370201, 379417, 455295, H04B 332, H04L 2508, H03K 501

Patent

active

058870326

ABSTRACT:
An apparatus or system for data communications that provides crosstalk cancellation is disclosed. The apparatus or system removes crosstalk interference (e.g., NEXT interference) from received signals on a given line by adaptively estimating the crosstalk interference induced by certain other of the lines having interfering transmissions and by canceling the crosstalk interference using the estimated crosstalk interference from the certain other of the lines. The invention is useful for high speed data transmissions where crosstalk interference can be a substantial impediment to proper reception of data. In particular, the invention is useful for VDSL and ADSL data transmissions using multicarrier modulation (e.g., DMT), wherein transmission frames for all lines are synchronized but the duration of the direction of transmission can vary due to differing frames.

REFERENCES:
patent: 4117277 (1978-09-01), Van Den Elzen et al.
patent: 4237463 (1980-12-01), Bjor et al.
patent: 4438530 (1984-03-01), Steinberger
patent: 4688245 (1987-08-01), Schenk
patent: 4995104 (1991-02-01), Gitlin
patent: 5181198 (1993-01-01), Lechleider
patent: 5271037 (1993-12-01), Szechenyi
patent: 5343496 (1994-08-01), Honig et al.
patent: 5483551 (1996-01-01), Huang et al.
Ho, et al., "Discrete Multitone Echo Cancelation", IEEE Transactions on Communications, vol. 44. No. 7, Jul. 1996.
Honig, Michael L., et al.; Suppression of Near-and Far-End Crosstalk by Linear Pre-and Post-Filtering; IEEE Journal on Selected Areas in Communications, vol. 10 , No. 3, Apr. 1992.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for crosstalk cancellation does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for crosstalk cancellation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for crosstalk cancellation will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2133744

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.