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Apparatus and method for searching preamble signal based on small search window

  • US 20030118084A1
  • Filed: 06/28/2002
  • Published: 06/26/2003
  • Est. Priority Date: 12/20/2001
  • Status: Active Grant
First Claim
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1. A small window preamble searcher for searching a preamble signal of a mobile station in a small search window, comprising:

  • engine start point control means for generating and controlling a search start point in the small search window;

    a plurality of spreading code generation means each for generating an spreading code at the search start point transmitted from said engine start point control means;

    a plurality of accumulation means each for despreading the spreading code generated from said spreading code generation means and a received signal inputted in a certain time and for coherently accumulating despreaded spreading code, thereby generating a coherently accumulated signal;

    unit symbol storing means for storing the coherently accumulated signal;

    conversion means for consecutively converting the accumulated signal from said unit symbol storing means, thereby generating a converted signal; and

    path arranging means for non-coherently accumulating the converted signal from said conversion means and arranging accumulated results.

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