发明公开
EP0205378A2 Method and device for timing pull-in of receiving equipment 失效
方法和装置用于紧固的接收系统的同步。

  • 专利标题: Method and device for timing pull-in of receiving equipment
  • 专利标题(中): 方法和装置用于紧固的接收系统的同步。
  • 申请号: EP86401173.9
    申请日: 1986-06-03
  • 公开(公告)号: EP0205378A2
    公开(公告)日: 1986-12-17
  • 发明人: Kaku, TakashiArai, Yasuhiro
  • 申请人: FUJITSU LIMITED
  • 申请人地址: 1015, Kamikodanaka, Nakahara-ku Kawasaki-shi, Kanagawa 211 JP
  • 专利权人: FUJITSU LIMITED
  • 当前专利权人: FUJITSU LIMITED
  • 当前专利权人地址: 1015, Kamikodanaka, Nakahara-ku Kawasaki-shi, Kanagawa 211 JP
  • 代理机构: Descourtieux, Philippe
  • 优先权: JP120839/85 19850604; JP123772/85 19850607
  • 主分类号: H04L7/02
  • IPC分类号: H04L7/02
Method and device for timing pull-in of receiving equipment
摘要:
Receiving equipment comprising a demodulator (3), a timing extraction unit (4), a PLL unit (7), an impulse recovery unit (12), a fix-equalizer (13), and an automatic-equalizer (14). A timing pull-in operation is performed by recovering the impulse from a training signal containing an impulse compo- - nent and received at the time of initial training of the receiving equipment, setting a complex conjugate of the recovered impulse as the tap coefficient (CJ) for the fix-equalizer (13), calculating the ta coefficient for the automatic-equalizer (14) from the recovered impulse to set it initially to the automatic-equalizer (14), and setting the amount of phase rotation to phase rotating means (6) so thatthe phase of the timing signal from the timing extraction unit (4) coincides with the phase of an internal clock.
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