- 专利标题: Method and wireless communication device for estimating frequency offset of received signal
-
申请号: US15508984申请日: 2014-09-24
-
公开(公告)号: US09882760B2公开(公告)日: 2018-01-30
- 发明人: Zhiheng Guo , Hai Wang
- 申请人: Telefonaktiebolaget LM Ericsson (publ)
- 申请人地址: SE Stockholm
- 专利权人: Telefonaktiebolaget LM Ericsson (publ)
- 当前专利权人: Telefonaktiebolaget LM Ericsson (publ)
- 当前专利权人地址: SE Stockholm
- 代理机构: Withrow & Terranova, PLLC
- 国际申请: PCT/CN2014/087297 WO 20140924
- 国际公布: WO2016/045012 WO 20160331
- 主分类号: H04L27/00
- IPC分类号: H04L27/00 ; H04L27/26 ; H04L27/38 ; H04L27/14
摘要:
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.
公开/授权文献
信息查询