Invention Grant
US07649962B2 Phase error correction circuit 有权
相位误差校正电路

  • Patent Title: Phase error correction circuit
  • Patent Title (中): 相位误差校正电路
  • Application No.: US10578005
    Application Date: 2005-08-04
  • Publication No.: US07649962B2
    Publication Date: 2010-01-19
  • Inventor: Tatsuji Ishii
  • Applicant: Tatsuji Ishii
  • Applicant Address: JP Osaka
  • Assignee: Panasonic Corporation
  • Current Assignee: Panasonic Corporation
  • Current Assignee Address: JP Osaka
  • Agency: McDermott Will & Emery LLP
  • Priority: JP2004-262202 20040909
  • International Application: PCT/JP2005/014295 WO 20050804
  • International Announcement: WO2006/027916 WO 20060316
  • Main IPC: H04L27/14
  • IPC: H04L27/14
Phase error correction circuit
Abstract:
A phase error correction circuit includes a complex phase rotator for multiplying an input VSB (vestigial-sideband) signal by a phase correction signal and outputting a resultant signal, a specific frequency component elimination filter for eliminating a specific frequency component from the signal output from the complex phase rotator and outputting a resultant signal, a waveform equalizer for performing waveform distortion correction to the signal output from the specific frequency component elimination filter and outputting a resultant signal and a phase correction signal generator for detecting a phase error based on the signal output from the waveform equalizer and outputting a complex signal corresponding to the detected phase error as the phase correction signal.
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