Invention Grant
- Patent Title: Optical transmitter, optical receiver, method of compensating non-linear distortion, and communication apparatus
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Application No.: US14446508Application Date: 2014-07-30
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Publication No.: US09667347B2Publication Date: 2017-05-30
- Inventor: Tomofumi Oyama , Takeshi Hoshida , Hisao Nakashima
- Applicant: FUJITSU LIMITED
- Applicant Address: JP Kawasaki
- Assignee: FUJITSU LIMITED
- Current Assignee: FUJITSU LIMITED
- Current Assignee Address: JP Kawasaki
- Agency: Fujitsu Patent Center
- Priority: JP2013-188670 20130911
- Main IPC: H04B10/00
- IPC: H04B10/00 ; H04B10/58 ; H04B10/2543 ; H04B10/61
Abstract:
A non-linear distortion compensator includes: a first signal generator configured to generate a signal with a second multivalued level lower than a first multivalued level from an input signal; a non-linear distortion calculator configured to calculate non-linear distortion of the signal with the first multivalued level based on the signal with the second multivalued level generated by the first signal generator; and a non-linear compensator configured to compensate the non-linear distortion of the signal with the first multivalued level based on the non-linear distortion calculated by the non-linear distortion calculator.
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