Pulse or digital communications – Cable systems and components
Patent
1996-09-03
1999-03-23
Chin, Stephen
Pulse or digital communications
Cable systems and components
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.
Amati Communications Corp.
Chin Stephen
Deppe Betsy L.
LandOfFree
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.
Profile ID: LFUS-PAI-O-2133744