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:
Jan. 25, 2022
Filed:
Nov. 05, 2020
Shahab Oveis Gharan, Ottawa, CA;
Ramin Babaee, Ottawa, CA;
Martin Bouchard, Cantley, CA;
Kim B. Roberts, Ottawa, CA;
Shahab Oveis Gharan, Ottawa, CA;
Ramin Babaee, Ottawa, CA;
Martin Bouchard, Cantley, CA;
Kim B. Roberts, Ottawa, CA;
Ciena Corporation, Hanover, MD (US);
Abstract
A receiver is configured to detect, at a communication interface, a received signal that suffers from degradations incurred over a communication channel. The receiver applies an adaptive filter to a series of received blocks of a digital representation of the received signal, thereby generating respective filtered blocks. The receiver calculates coefficients for use by the adaptive filter on an jreceived block as a function of (i) error estimates associated with an (j−D−1)filtered block, where D is a positive integer representing a number of blocks, and where j is a positive integer greater than (D−1); and (ii) delay compensation terms dependent on an estimate of a difference between coefficients used by the adaptive filter on an (j−D−1)received block and coefficients used by the adaptive filter on an (j−1)received block