Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)

The Institute of Electronics and Information Engineers (대한전자공학회)
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Improvement of Applebaum Array Interference Cancellation in Smart Antenna System by Using Covariance Matrix Adjustment

  • Tanakorn Sukontapong (Faculty of Engineering and Research Center for Communications and Information Technology, King Mongkut′s Institute of Technology Ladkrabang) ;
  • Chuwong Phogcharoenpanich (Faculty of Engineering and Research Center for Communications and Information Technology, King Mongkut′s Institute of Technology Ladkrabang) ;
  • Phaisan Ngamjanyaporn (Faculty of Engineering and Research Center for Communications and Information Technology, King Mongkut′s Institute of Technology Ladkrabang) ;
  • Monai Krairiksh (Faculty of Engineering and Research Center for Communications and Information Technology, King Mongkut′s Institute of Technology Ladkrabang)
  • Published : 2002.07.01
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Abstract

This paper proposes the interference cancellation improvement in smart antenna system by using Applebaum array covariance matrix adjustment. This technique adds the specific adjustable multipliers with both desired signal covariance matrix and interference signal covariance matrices in order to overcome some disadvantages and improve the interference cancellation efficiency of Applebaum array. It is based on the desired and undesired signal power or desired signal-to-interference-plus-thermal noise ratio (SINR). As the result from demonstration, the proposed technique can improve and increase the interference cancellation efficiency in smart antenna better than the conventional technique.

Keywords