Invention Grant
US08340159B2 Method and apparatus for multiresolution / multipath searcher 有权
多分辨率/多径搜索器的方法和装置

  • Patent Title: Method and apparatus for multiresolution / multipath searcher
  • Patent Title (中): 多分辨率/多径搜索器的方法和装置
  • Application No.: US12087941
    Application Date: 2006-01-27
  • Publication No.: US08340159B2
    Publication Date: 2012-12-25
  • Inventor: Benyuan ZhangPaul Gothard Knutson
  • Applicant: Benyuan ZhangPaul Gothard Knutson
  • Applicant Address: FR Boulogne-Billancourt
  • Assignee: Thomson Licensing
  • Current Assignee: Thomson Licensing
  • Current Assignee Address: FR Boulogne-Billancourt
  • Agent Robert D. Shedd; Robert B. Levy; Jorge Tony Villabon
  • International Application: PCT/US2006/002934 WO 20060127
  • International Announcement: WO2007/086858 WO 20070802
  • Main IPC: H04B1/00
  • IPC: H04B1/00
Method and apparatus for multiresolution / multipath searcher
Abstract:
A multipath searcher and method includes a programmable decimation filter configured to adjust a sample rate of a received pilot signal. A plurality of correlators is configured to compare the received pilot signal to a reference code in a first mode and in a second mode. The first mode includes a low resolution search of a search window performed such that the plurality of correlators encompass an entire search window concurrently and the plurality of correlators receives a delayed reference code delayed to correspond with a portion of the search window in which a corresponding correlator performs correlation to identify peaks in the received pilot signal. The second mode includes a high resolution search of a refined search window only at or near identified peaks discovered in the first mode. The high resolution search is focused at the peak location by adjusting delays in the plurality of correlators.
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