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Determining signal direction in radio system

  • US 20040014499A1
  • Filed: 02/28/2003
  • Published: 01/22/2004
  • Est. Priority Date: 03/01/2002
  • Status: Abandoned Application
First Claim
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1. A method of determining a signal direction in a radio system, the method comprising receiving a signal transmitted by a first transceiver by at least two antenna elements of an antenna array of a second transceiver, the antenna elements being used to form at least two receiving beams with different directions;

  • determining signal power values in at least two different receiving beams and a preliminary direction of arrival for the received signal as properties of the received signal, the method further comprising determining a variable describing the angular speed of the first transceiver in relation to the second transceiver;

    performing averaging filtering on at least one of the determined properties and changing at least one parameter of the averaging filtering according to the variable describing the angular speed of the first transceiver; and

    determining the direction of the received signal utilizing at least one property filtered with averaging filtering.

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