Invention Grant
- Patent Title: Compensation apparatus for offset drift, received signal recovery apparatus and receiver
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Application No.: US15720576Application Date: 2017-09-29
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Publication No.: US10404380B2Publication Date: 2019-09-03
- Inventor: Yangyang Fan , Zhenning Tao
- Applicant: Fujitsu Limited
- Applicant Address: JP Kawasaki
- Assignee: FUJITSU LIMITED
- Current Assignee: FUJITSU LIMITED
- Current Assignee Address: JP Kawasaki
- Agency: Staas & Halsey LLP
- Priority: CN201610990780 20161110
- Main IPC: H04B10/516
- IPC: H04B10/516 ; H04B10/61 ; H04J14/06 ; H04B10/69 ; H04B10/2575

Abstract:
Embodiments of this disclosure provide a compensation apparatus for an offset drift, a received signal recovery apparatus and a receiver, in which estimation and compensation of an offset drift are directly performed at a receiver end, with no need of extra provision of an offset control circuit at a transmitter end, so that the system is simple in structure, applicable to various modulation formats, wide in applicability, and is able to meet demands for high-order modulation formats. And furthermore, by equalizing a received signal and performing phase recovery on a frequency difference and phase noises, information on offset points of a modulator of the transmitter end may be accurately separated, thereby accurately compensating for the offset drift of the modulator of the transmitter end.
Public/Granted literature
- US20180131446A1 COMPENSATION APPARATUS FOR OFFSET DRIFT, RECEIVED SIGNAL RECOVERY APPARATUS AND RECEIVER Public/Granted day:2018-05-10
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