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SYSTEM AND METHOD FOR DETERMINATION OF POSITION

  • US 20090149202A1
  • Filed: 12/04/2008
  • Published: 06/11/2009
  • Est. Priority Date: 12/07/2007
  • Status: Abandoned Application
First Claim
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1. A system for determining a position of a wireless device of a user, comprising:

  • a plurality of wireless devices, said plurality of wireless devices including said wireless device of said user and one or more remote wireless devices, each of said one or more remote wireless devices being disposed at a determinable position,wherein each of said one or more remote wireless devices is operative to transmit at least one wireless signal comprising at least one code sequence, each of said at least one code sequence including a plurality of digital codes, andwherein said wireless device of said user is operative to receive said at least one wireless signal comprising said at least one code sequence transmitted by each of said one or more remote wireless devices, said wireless device of said user including at least one processor operative;

    to correlate said plurality of digital codes in each code sequence with a reference code to determine a peak correlation time for each of said plurality of digital codes in the respective code sequence;

    to filter the peak correlation times for said plurality of digital codes in each code sequence; and

    to perform, using the filtered peak correlation times for said plurality of digital codes in each code sequence, a time-of-arrival (TOA) calculation for the respective code sequence, the TOA calculations for the respective code sequences being used to determine said position of said wireless device of said user.

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