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International Journal of Antennas and Propagation
Volume 2014, Article ID 495057, 8 pages
http://dx.doi.org/10.1155/2014/495057
Research Article

An Efficient Algorithm for EM Scattering from Anatomically Realistic Human Head Model Using Parallel CG-FFT Method

Center for Computational Science and Engineering, School of Mathematics and Statistics, Jiangsu Normal University, Xuzhou 221116, China

Received 1 December 2013; Revised 2 February 2014; Accepted 16 February 2014; Published 24 March 2014

Academic Editor: Gaobiao Xiao

Copyright © 2014 Lei Zhao and Gen Chen. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

An efficient algorithm is proposed to analyze the electromagnetic scattering problem from a high resolution head model with pixel data format. The algorithm is based on parallel technique and the conjugate gradient (CG) method combined with the fast Fourier transform (FFT). Using the parallel CG-FFT method, the proposed algorithm is very efficient and can solve very electrically large-scale problems which cannot be solved using the conventional CG-FFT method in a personal computer. The accuracy of the proposed algorithm is verified by comparing numerical results with analytical Mie-series solutions for dielectric spheres. Numerical experiments have demonstrated that the proposed method has good performance on parallel efficiency.