• Title/Summary/Keyword: 퍼진신호원

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Estimation Technique of Direction of Arrival for Location Service in the next Generation Mobile Communication System (차세대 이동통신시스템에서 Location Service를 위한 신호도착방향 추정기법)

  • 이성로;최명수;김철희;안동순;김종화
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.28 no.5A
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    • pp.284-293
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    • 2003
  • Location service is usually provided by the GPS method using satellites. In the next generation mobile communication systems which use smart antennas, location service can be accomplished using direction of arrival (DOA) estimation techniques. In this paper, we propose a DOA estimation technique for the location service of the next generation mobile communication systems and investigate the validity of the proposed technique through computer simulation. First, DOA estimation problems of distributed sources are considered using vortical and horizontal array processors which are orthogonal to each other. The DOA of the elevation angle is estimated by the vertical array processor and then that of the azimuth angle is estimated by the horizontal array processor. Finally, the procedures of the location service for specific signal sources using three smart antennas are exhibited by computer simulation to show that the proposed DOA estimation technique can be used for the location service in the next generation mobile communication systems.