发明申请
US20160134457A1 ROBUST SCALABLE AND ADAPTIVE FREQUENCY ESTIMATION AND FREQUENCY TRACKING FOR WIRELESS SYSTEMS 审中-公开
无线系统的鲁棒可扩展和自适应频率估计和频率跟踪

  • 专利标题: ROBUST SCALABLE AND ADAPTIVE FREQUENCY ESTIMATION AND FREQUENCY TRACKING FOR WIRELESS SYSTEMS
  • 专利标题(中): 无线系统的鲁棒可扩展和自适应频率估计和频率跟踪
  • 申请号: US14996007
    申请日: 2016-01-14
  • 公开(公告)号: US20160134457A1
    公开(公告)日: 2016-05-12
  • 发明人: Zhu JIJohnson O. SEBENIYu-Lin WANG
  • 申请人: Apple Inc.
  • 主分类号: H04L27/26
  • IPC分类号: H04L27/26 H04L25/02
ROBUST SCALABLE AND ADAPTIVE FREQUENCY ESTIMATION AND FREQUENCY TRACKING FOR WIRELESS SYSTEMS
摘要:
Methods and apparatuses to determine a frequency adjustment in a mobile wireless device are disclosed. A method includes determining a coarse frequency error estimate and multiple fine frequency error estimates; selecting at least one candidate fine frequency error estimate having a frequency value closest to a corresponding frequency value for the coarse frequency error estimate; and determining a frequency adjustment based on a combination of the coarse frequency error estimate and the selected at least one candidate fine frequency error estimate. In an embodiment, the method further includes calculating a confidence metric for the coarse frequency error estimate; when the confidence metric exceeds a threshold value, determining the frequency adjustment based on the candidate fine frequency error estimate; otherwise, determining the frequency adjustment based on a fine frequency error estimate in the plurality of fine frequency error estimates closest to a most recent previous fine frequency error estimate.
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