The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 2016
Filed:
Sep. 09, 2014
Qunbi Zhuge, Montreal, CA;
Shahab Oveis Gharan, Nepean, CA;
Michael Andrew Reimer, Stittsville, CA;
Maurice O'sullivan, Ottawa, CA;
Qunbi Zhuge, Montreal, CA;
Shahab Oveis Gharan, Nepean, CA;
Michael Andrew Reimer, Stittsville, CA;
Maurice O'Sullivan, Ottawa, CA;
CIENA CORPORATION, Hanover, MD (US);
Abstract
Aspects of the present invention provide techniques for compensating nonlinear impairments of a signal traversing an optical communications system. A parallel array of linear convolutional filters are configured to process a selected set of samples of the signal to generate an estimate of a nonlinear interference field. The predetermined set of samples comprises a first sample and a plurality of second samples. A processor applies the estimated nonlinear interference field to the first sample to least partially compensate the nonlinear impairment.