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Progress In Electromagnetics Research C
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DIGITAL AMPLITUDE CONTROL FOR INTERFERENCE SUPPRESSION USING IMMUNITY GENETIC ALGORITHM

By Z. Hamici and T. H. Ismail

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Abstract:
In this paper, we propose a novel genetic algorithm (GA) called immunity GA (IGA) for array pattern synthesis with interference suppression using digital amplitude only control. The IGA is based on crossover evolution where the crossover operator is a variant of the known GA operator. A new formulation of the array factor transform for a specific number of elements N is expressed by a discrete cosine transform (DCT) with pre-computed DCT matrix. Evaluating thousands of candidate solutions generated by the IGA using the precomputed DCT matrix will result in a high speed computation. This high performance allows us to find a good approximation of the absolute minimum SLL of synthesized arrays with digital amplitude control. Simulation results show the effectiveness of this new algorithm for pattern synthesis with low SLL and null steering.

Citation:
Z. Hamici and T. H. Ismail, "Digital Amplitude Control for Interference Suppression Using Immunity Genetic Algorithm," Progress In Electromagnetics Research C, Vol. 11, 21-38, 2009.
doi:10.2528/PIERC09082905

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