Patent ID: 7103084

Claim:
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 a 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 a corresponding one of said plurality of said spreading code generation means and a received signal inputted in a certain time and for coherently accumulating despreaded received signal, thereby generating a coherently accumulated signal at an output of each of said plurality of accumulation means; unit symbol storing means for storing the coherently accumulated signals; conversion means for consecutively converting the accumulated signals from said unit symbol storing means, thereby generating converted signals; and path arranging means for non-coherently accumulating the converted signals from said conversion means and arranging accumulated results.