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. 19, 2015
Filed:
Mar. 19, 2013
Applicant:
Jds Uniphase Corporation, Milpitas, CA (US);
Inventors:
Jim Walsh, Westfield, IN (US);
Ching-Chang Liao, Fishers, IN (US);
Assignee:
JDS Uniphase Corporation, Milpitas, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 3/46 (2006.01); H04B 17/00 (2006.01); H04Q 1/20 (2006.01); H04N 17/00 (2006.01);
U.S. Cl.
CPC ...
H04N 17/00 (2013.01); H04N 17/004 (2013.01);
Abstract
The invention relates to a method and apparatus for evaluating a network and for predicting network performance for a higher order modulation by analyzing network signals modulated using a lower order modulation format. A margin index may be generated for the current or projected modulation formats based on displacement vectors for received symbols to indicate a margin remaining before a codeword error occurs to alert the network operator of potential performance issues before actual codeword errors occur.