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Programmable matched filter searcher for multiple pilot searching

  • US 6,480,529 B1
  • Filed: 12/21/1999
  • Issued: 11/12/2002
  • Est. Priority Date: 12/21/1999
  • Status: Expired due to Term
First Claim
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1. A programmable matched filter searcher comprising:

  • a shift register, operating as a single shift register when receiving a first type of data and operating as a multiple shift registers when receiving a second type of data, the first type of data being received from a single source and the second type of data being received from a plurality of sources;

    a PN generator for generating PN sequences;

    a despreader for receiving the PN sequences and the data from the shift register and for producing sets of despread values, the despreader concurrently receiving multiple PN sequences while despreading the second type of data;

    a first set of summers for summing the sets of despread values from the despreader, for producing a complete sum when the data from the shift register are the second type of data, and for producing a partial sum when the data from the shift register are the first type of data; and

    a second set of summers for receiving the partial sum from the first set of summers and producing a complete sum when the data from the shift register are the first type of data.

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