Invention Grant
US08718206B2 Frequency correction circuit, frequency correction method and wireless communication equipment using them 有权
频率校正电路,频率校正方法和使用它们的无线通信设备

  • Patent Title: Frequency correction circuit, frequency correction method and wireless communication equipment using them
  • Patent Title (中): 频率校正电路,频率校正方法和使用它们的无线通信设备
  • Application No.: US13148840
    Application Date: 2010-02-16
  • Publication No.: US08718206B2
    Publication Date: 2014-05-06
  • Inventor: Yasushi Maruta
  • Applicant: Yasushi Maruta
  • Applicant Address: JP Tokyo
  • Assignee: NEC Corporation
  • Current Assignee: NEC Corporation
  • Current Assignee Address: JP Tokyo
  • Agency: Sughrue Mion, PLLC
  • Priority: JP2009-034696 20090218
  • International Application: PCT/JP2010/052588 WO 20100216
  • International Announcement: WO2010/095732 WO 20100826
  • Main IPC: H04L27/06
  • IPC: H04L27/06
Frequency correction circuit, frequency correction method and wireless communication equipment using them
Abstract:
There is obtained a frequency correction circuit capable of correcting the frequency errors of received signals with high accuracy and preventing the degradation of demodulated signals, while further suppressing an increase in the circuit scale.A frequency correction circuit according to the present invention includes a demodulation means that gives respective preset frequency offsets corresponding to a plurality of frequency errors to received radio signals and demodulates said received radio signals by utilizing respective ones of a plurality of preset in-phase summation periods, and a selection means that selects one demodulated signal from among a plurality of demodulated signals demodulated by said demodulation means.
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