Invention Grant
- Patent Title: Method and wireless communication device for estimating frequency offset of received signal
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Application No.: US15508984Application Date: 2014-09-24
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Publication No.: US09882760B2Publication Date: 2018-01-30
- Inventor: Zhiheng Guo , Hai Wang
- Applicant: Telefonaktiebolaget LM Ericsson (publ)
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee: Telefonaktiebolaget LM Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Withrow & Terranova, PLLC
- International Application: PCT/CN2014/087297 WO 20140924
- International Announcement: WO2016/045012 WO 20160331
- Main IPC: H04L27/00
- IPC: H04L27/00 ; H04L27/26 ; H04L27/38 ; H04L27/14

Abstract:
The present disclosure provides a method implemented in a wireless communication device for estimating a frequency offset between a carrier frequency of a received signal and a frequency of a local oscillator as well as the wireless communication device. The method comprises determining a plurality of phase change candidates for a phase change between a data symbol and a first reference symbol in the signal. The method further comprises generating a collection of constellation symbols from the data symbol and rotating the collection of constellation symbols by the plurality of phase change candidates. Then, one of the phase change candidates corresponding to one of the rotated collections of constellation symbols is selected in such a manner that said one of the rotated collections of constellation symbols matches a set of constellation points best. Next, the frequency offset is determined based on the selected phase change candidate.
Public/Granted literature
- US20170279652A1 METHOD AND WIRELESS COMMUNICATION DEVICE FOR ESTIMATING FREQUENCY OFFSET OF RECEIVED SIGNAL Public/Granted day:2017-09-28
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