Automated Creation of Beamformer-Based Optimum DOA Estimation Algorithm Using Genetic Algorithm

Shunsuke YOSHIMURA  Hiroshi HIRAYAMA  Nobuyoshi KIKUMA  Kunio SAKAKIBARA  

Publication
IEICE TRANSACTIONS on Communications   Vol.E95-B   No.10   pp.3332-3336
Publication Date: 2012/10/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.3332
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Antennas and Propagation
Keyword: 
array antenna,  DOA estimation,  genetic algorithm,  genetic programming,  Polish notation,  combinatorial optimization,  

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Summary: 
A novel method for automatically creating an optimum direction-of-arrival (DOA) estimation algorithm for a given radio environment using a genetic algorithm (GA) is proposed. DOA estimation algorithms are generally described by parameters and operators. The performance of a DOA estimation algorithm is evaluated using root mean square error (RMSE) through computer simulations. A GA searches for the combination of parameters and operators that gives the lowest RMSE. Because a GA can treat only bit strings, Polish notation is used to convert bit strings into a DOA estimation algorithm. A computer simulation showed that the proposed method can create a new angle spectrum function. The created angle spectrum function has higher resolution than the Capon method.