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. 16, 2019
Filed:
Oct. 12, 2016
Applicant:
Fujitsu Limited, Kawasaki, JP;
Inventors:
Liang Dou, Beijing, CN;
Zhenning Tao, Beijing, CN;
Assignee:
FUJITSU LIMITED, Kawasaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 14/08 (2006.01); H04L 5/00 (2006.01); H04B 10/54 (2013.01); H04J 14/06 (2006.01); H04B 10/077 (2013.01); H04B 10/079 (2013.01); H04B 10/516 (2013.01); H04B 10/564 (2013.01);
U.S. Cl.
CPC ...
H04B 10/07953 (2013.01); H04B 10/0775 (2013.01); H04B 10/07951 (2013.01); H04B 10/541 (2013.01); H04B 10/564 (2013.01); H04J 14/06 (2013.01); H04B 10/516 (2013.01); H04B 2210/075 (2013.01); H04J 14/08 (2013.01); H04L 5/0048 (2013.01);
Abstract
Embodiments of the present disclosure provide a monitoring apparatus for an optical signal to noise ratio, a signal transmission apparatus and a receiver. White noise power of received signals is calculated according to noise power and power of pilot signals of the received signals in different polarization states, and influence of a nonlinear noise is excluded, thereby accurately estimating an optical signal to noise ratio, for example, with a calculation process being simple and an application range being relatively wide.