- 专利标题: Compensation apparatus for offset drift, received signal recovery apparatus and receiver
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申请号: US15720576申请日: 2017-09-29
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公开(公告)号: US10404380B2公开(公告)日: 2019-09-03
- 发明人: Yangyang Fan , Zhenning Tao
- 申请人: Fujitsu Limited
- 申请人地址: JP Kawasaki
- 专利权人: FUJITSU LIMITED
- 当前专利权人: FUJITSU LIMITED
- 当前专利权人地址: JP Kawasaki
- 代理机构: Staas & Halsey LLP
- 优先权: CN201610990780 20161110
- 主分类号: H04B10/516
- IPC分类号: H04B10/516 ; H04B10/61 ; H04J14/06 ; H04B10/69 ; H04B10/2575
摘要:
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.
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