Optimizing interference cancellation of adaptive linear array by phase-only perturbations using genetic algorithms

  • Authors:

  • Chao-Hsing Hsu;Wen-Jye Shyr;Kun-Huang Kuo

  • Affiliations:

  • Dept. of Electronic Engineering, Chienkuo Technology University, Changhua, Taiwan, R.O.C.;Dept. of Industrial Education and Technology, National Changhua University of Education, Changhua, Taiwan, R.O.C.;Dept. of Electronic Engineering, Chienkuo Technology University, Changhua, Taiwan, R.O.C.

  • Venue:
  • KES'05 Proceedings of the 9th international conference on Knowledge-Based Intelligent Information and Engineering Systems - Volume Part I
  • Year:
  • 2005

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Abstract

An antenna array is often used as an adaptive antenna. In this paper, the pattern nulling of a linear array for interference cancellation is derived by phase-only perturbations using genetic algorithms. This design for radiation pattern nulling of an adaptive antenna can suppress multiple interferences by placing nulls at the directions of the interfering sources, i.e., to increase the Signal Interference Ratio (SIR). One example is provided to justify the proposed phase-only perturbations approach based on genetic algorithms. The simulation results show that optimizing interference cancellation of adaptive linear array has been achieved by phase-only perturbations using genetic algorithms.