发明公开
EP1638284A2 Frequency recovery apparatus and method for use in digital broadcast receiver 审中-公开
Einrichtung und Verfahren zurFrequenzrückgewinnungin einem digitalenRundfunkempfänger

  • 专利标题: Frequency recovery apparatus and method for use in digital broadcast receiver
  • 专利标题(中): Einrichtung und Verfahren zurFrequenzrückgewinnungin einem digitalenRundfunkempfänger
  • 申请号: EP05291912.3
    申请日: 2005-09-15
  • 公开(公告)号: EP1638284A2
    公开(公告)日: 2006-03-22
  • 发明人: Kim, Tae Ho
  • 申请人: LG Electronics, Inc.
  • 申请人地址: 20, Yoido-dong, Youngdungpo-gu Seoul 150-875 KR
  • 专利权人: LG Electronics, Inc.
  • 当前专利权人: LG Electronics, Inc.
  • 当前专利权人地址: 20, Yoido-dong, Youngdungpo-gu Seoul 150-875 KR
  • 代理机构: Loisel, Bertrand
  • 优先权: KR2004074475 20040917
  • 主分类号: H04L27/26
  • IPC分类号: H04L27/26
Frequency recovery apparatus and method for use in digital broadcast receiver
摘要:
A coarse frequency recovery apparatus and method for use in a digital broadcast receiver using OFDM scheme, but having very strong resistance to a sampling offset is disclosed. According to the present invention, a correlation interval of the 8k-mode for coarse frequency recovery is divided into four 2k-mode intervals. Frequency offset estimation process is performed using the four 2k-mode intervals, such that individual phase variations are reduced, resulting in reduction of a negative influence caused by a sampling clock offset.
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