- 专利标题: System and method for frequency synchronization of Doppler-shifted subcarriers
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申请号: US16668218申请日: 2019-10-30
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公开(公告)号: US10944612B2公开(公告)日: 2021-03-09
- 发明人: Hanwu Hu , Nima Ahmadvand
- 申请人: Conversant Intellectual Property Management Inc.
- 申请人地址: CA Ottawa
- 专利权人: Conversant Intellectual Property Management Inc.
- 当前专利权人: Conversant Intellectual Property Management Inc.
- 当前专利权人地址: CA Ottawa
- 代理机构: Conversant IP Management Corp.
- 主分类号: H04L27/26
- IPC分类号: H04L27/26
摘要:
A method includes receiving an Orthogonal Frequency Division Multiplexing (OFDM) signal comprising a plurality of Doppler-shifted OFDM subcarriers and determining frequency-shift data corresponding to the plurality of Doppler-shifted OFDM subcarriers. The determining includes calculating frequency-shift data for each Doppler-shifted OFDM subcarrier of the plurality of Doppler-shifted OFDM subcarriers, thereby yielding a plurality of subcarrier-specific frequency-shift values and calculating an average of the plurality of subcarrier-specific frequency-shift values. The method further includes frequency shifting each subcarrier of the plurality of Doppler-shifted OFDM subcarriers by a value based on the determined frequency-shift data multiplied by a frequency index of each subcarrier.
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