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:
May. 11, 2010
Filed:
Nov. 30, 2005
Applicant:
Andrew G. Deczky, Ottawa, CA;
Inventor:
Andrew G. Deczky, Ottawa, CA;
Assignee:
Ciena Corporation, Linthicum, MD (US);
Primary Examiner:
Int. Cl.
CPC ...
H03M 13/03 (2006.01); G06F 11/00 (2006.01); G11C 29/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a method and apparatus for the efficient implementation of a totally general convolutional interleaver in a discrete multi-tone (DMT)-based digital subscriber line (xDSL) system, such as a modem or the like, that uses forward error correction (FEC) and convolutional interleaving to combat the effects of impulse noise and the like. More specifically, the present invention provides a method and apparatus for implementing a general convolutional interleaver, with no constraints, in an efficient manner, using (D−1)*(I−1)/2 memory locations for the interleaved data in all cases.