Adaptive pattern nulling design of linear array antenna by phase-only perturbations using memetic algorithms

Chao Hsing Hsu, Wen-Jye Shyr

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


In this paper, the pattern nulling of a linear array for interference cancellation is derived by phase-only perturbations using memetic algorithms (MAs). The MAs uses improvement procedures which is obtained by incorporating local search into the genetic algorithms. It is proposed to improve the search ability of genetic algorithms. MA is a kind of an improved type of the traditional genetic algorithms. By using local search procedure, it can avoid the shortcoming of the traditional genetic algorithms, whose termination criteria are set up by using the trial and error method. The MA is applied to find the pattern nulling of the proposed adaptive antenna. This design for radiation pattern nulling of an adaptive antenna can suppress interference by placing a null at the direction of the interfering source, i.e. to increase the signal, to interference ratio. This proposed method is that an innovative adaptive antenna optimization technique is also able to solve the multipath problem which exists in practical wireless communication systems. Two examples are provided to justify the proposed phase-only perturbations approach based on MAs. Computer simulation results are given to demonstrate the effectiveness of the proposed method.

Original languageEnglish
Pages (from-to)1121-1133
Number of pages13
JournalCommunications in Numerical Methods in Engineering
Issue number11
Publication statusPublished - 2008 Nov 1

All Science Journal Classification (ASJC) codes

  • Software
  • Modelling and Simulation
  • Engineering(all)
  • Computational Theory and Mathematics
  • Applied Mathematics

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