Pulse or digital communications – Equalizers – Automatic
Reexamination Certificate
2007-05-15
2007-05-15
Kim, Kevin (Department: 2611)
Pulse or digital communications
Equalizers
Automatic
Reexamination Certificate
active
09978991
ABSTRACT:
An apparatus and method is disclosed for reducing error propagation in a decision feedback equalizer by constraining the values of feedback filter tap coefficients in a feedback filter of the decision feedback equalizer. The feedback filter tap coefficients that are constrained are calculated using a constraint cost function and a related constraint function. The constraint condition of the present invention reduces error propagation in a decision feedback equalizer by preventing error from circulating in a feedback loop of a feedback filter within the decision feedback equalizer.
REFERENCES:
patent: 3646480 (1972-02-01), Spaulding
patent: 4422175 (1983-12-01), Bingham et al.
patent: 5572552 (1996-11-01), Dent et al.
patent: 6570919 (2003-05-01), Lee
patent: 6804695 (2004-10-01), Hsu
patent: 6850559 (2005-02-01), Driessen et al.
patent: 6865239 (2005-03-01), Gonikberg
patent: 3605325 (1987-08-01), None
patent: 0143214 (1985-06-01), None
patent: 0113516 (2001-02-01), None
Trellis-Coded Modulation With Redundant Signal Sets-Part I Introduction, By G. Ungerboeck, IEEE Communications, Feb. 1987, vol. 25, No. 2, pp. 5-21.
Kim Kevin
Koninklijke Philips Electronics , N.V.
Liberchuk Larry
LandOfFree
Apparatus and method for constraining the value of feedback... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for constraining the value of feedback..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for constraining the value of feedback... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3787530