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:
Feb. 18, 2003
Filed:
Jul. 09, 2001
Applicant:
Inventors:
Kim Byron Roberts, Welwyn Garden, GB;
Maurice M O'Sullivan, Ottawa, CA;
Alan Robinson, Harlow, GB;
Richard Edward Epworth, Sawbridgeworth, GB;
Assignee:
Nortel Networks Limited, St. Laurent, CA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 1/402 ; H04B 1/004 ; G01R 3/128 ; H04L 1/18 ; H03M 1/300 ;
U.S. Cl.
CPC ...
H04J 1/402 ; H04B 1/004 ; G01R 3/128 ; H04L 1/18 ; H03M 1/300 ;
Abstract
In an optical communication system, a train of optical pulses is transmitted such that each pulse carries a set of multiplexed channels. In a receiver, the error rate for each channel is monitored and a subset of channels having the most favorable rate is selected to carry a first data stream. The remaining channels carry a second data stream. Error rate performance is determined on the basis of error detecting codes carried by the channels in the first and second data streams.