发明申请
US20130287080A1 SYSTEM AND METHOD OF FREQUENCY OFFSET COMPENSATION FOR RADIO SYSTEM WITH FAST DOPPLER SHIFT 有权
具有快速多普勒频移的无线电系统频率偏移补偿系统及方法

  • 专利标题: SYSTEM AND METHOD OF FREQUENCY OFFSET COMPENSATION FOR RADIO SYSTEM WITH FAST DOPPLER SHIFT
  • 专利标题(中): 具有快速多普勒频移的无线电系统频率偏移补偿系统及方法
  • 申请号: US13885260
    申请日: 2011-10-28
  • 公开(公告)号: US20130287080A1
    公开(公告)日: 2013-10-31
  • 发明人: Jia-Ru LiMeng-Chang Doong
  • 申请人: Jia-Ru LiMeng-Chang Doong
  • 申请人地址: US CA Santa Clara
  • 专利权人: Lilee Systems, LTD
  • 当前专利权人: Lilee Systems, LTD
  • 当前专利权人地址: US CA Santa Clara
  • 国际申请: PCT/US2011/058399 WO 20111028
  • 主分类号: H04W24/02
  • IPC分类号: H04W24/02
SYSTEM AND METHOD OF FREQUENCY OFFSET COMPENSATION FOR RADIO SYSTEM WITH FAST DOPPLER SHIFT
摘要:
A system and method of frequency offset compensation are disclosed for a wireless system between a fast moving radio terminal associated with a locomotive and a stationary radio terminal associated with a base station. The present invention utilizes advanced frequency offset prediction to quickly track Doppler Shift caused by a fast moving locomotive. In one embodiment according to the present invention, the frequency offset prediction is based on a first plurality of coarse frequency offsets, first-order derivatives of the first plurality of coarse frequency offsets, and second-order derivatives of the first plurality of coarse frequency offsets. In another embodiment according to the present invention, the frequency offset prediction is based on a plurality of previous frequency offsets according to a Doppler shift model.
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