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Methods and apparatus for determining a direction of arrival in a wireless communication system

  • US 6,922,170 B2
  • Filed: 01/24/2002
  • Issued: 07/26/2005
  • Est. Priority Date: 01/24/2002
  • Status: Active Grant
First Claim
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1. A method for determining a direction of arrival (DOA) of a Radio Frequency (RF) signal transmitted by a remote unit in a wireless communication system, comprising:

  • receiving said RF signal with a plurality of antennas of an antenna array;

    determining a preliminary DOA for said RF signal received with said plurality of antennas of said antenna array;

    selecting a coefficient for said plurality of antennas of said antenna array based at least in part upon said preliminary DOA;

    modifying said RF signal with said coefficient for said plurality of antennas of said antenna array to generate a modified RF signal; and

    determining said DOA of said RF signal transmitted by said remote unit in said wireless communication system with said modified RF signal.

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