发明授权
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

  • 专利标题: Method and apparatus for multiresolution / multipath searcher
  • 专利标题(中): 多分辨率/多径搜索器的方法和装置
  • 申请号: US12087941
    申请日: 2006-01-27
  • 公开(公告)号: US08340159B2
    公开(公告)日: 2012-12-25
  • 发明人: Benyuan ZhangPaul Gothard Knutson
  • 申请人: Benyuan ZhangPaul Gothard Knutson
  • 申请人地址: FR Boulogne-Billancourt
  • 专利权人: Thomson Licensing
  • 当前专利权人: Thomson Licensing
  • 当前专利权人地址: FR Boulogne-Billancourt
  • 代理商 Robert D. Shedd; Robert B. Levy; Jorge Tony Villabon
  • 国际申请: PCT/US2006/002934 WO 20060127
  • 国际公布: WO2007/086858 WO 20070802
  • 主分类号: H04B1/00
  • IPC分类号: H04B1/00
Method and apparatus for multiresolution / multipath searcher
摘要:
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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