Invention Grant
- Patent Title: Phase noise compensation apparatus, demodulation apparatus, communication apparatus, communication system, and phase noise compensation method
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Application No.: US16325762Application Date: 2017-05-16
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Publication No.: US10763973B2Publication Date: 2020-09-01
- Inventor: Norifumi Kamiya , Eisaku Sasaki
- Applicant: NEC Corporation
- Applicant Address: JP Tokyo
- Assignee: NEC CORPORATION
- Current Assignee: NEC CORPORATION
- Current Assignee Address: JP Tokyo
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@5ae58e4b
- International Application: PCT/JP2017/018310 WO 20170516
- International Announcement: WO2018/034030 WO 20180222
- Main IPC: H04B10/61
- IPC: H04B10/61 ; H04L27/38 ; G01R29/26 ; H04B10/294 ; H04L25/02 ; H04L27/26 ; H04B10/516

Abstract:
A phase noise compensation apparatus is used for a demodulation apparatus for demodulating a transmission signal modulated by a modulation scheme that uses phase information for data identification. A phase detector detects a phase error of a reception pilot symbol sequence included in a reception symbol sequence. A first filter refers to the phase error detected in a time series manner and sequentially estimates first phase noise components. A second filter refers to the phase error detected in a reverse time series manner and sequentially estimates second phase noise components. The synthesis processing unit estimates a phase noise component of a reception symbol based on an estimated value of the first phase noise component, an estimated value of the second phase noise component, and the phase error. The phase rotator rotates a phase of the reception symbol based on the estimated phase noise component of the reception symbol.
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