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:
Aug. 27, 2019
Filed:
Mar. 16, 2018
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Guoxiu Huang, Kawasaki, JP;
Setsuo Yoshida, Inagi, JP;
Takeshi Hoshida, Kawasaki, JP;
Hisao Nakashima, Kawasaki, JP;
Shoichiro Oda, Fuchu, JP;
FUJITSU LIMITED, Kawasaki, JP;
Abstract
A method of controlling a transmission signal, includes transmitting a training signal including four polarization states having a given relation; and performing rotation control and transmission power level control of a polarization component of a data signal, based on a rotation control matrix for a polarization state and an inverse-operation control matrix for a power level imbalance, which are estimated from Stokes parameters related to input power level present on a Poincare sphere acquired from the training signal and Stokes parameters related to output power level present on the Poincare sphere.