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Shifted SSOR Preconditioning Technique for Electromagnetic
J.Q. Chen #,R.S. Chen * #
Department of Communication Engineering,Nanjing University of Science and Technology
*Correspondence author
#Submitted by
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Funding: none
Opened online:27 December 2007
Accepted by: none
Citation: J.Q. Chen,R.S. Chen.Shifted SSOR Preconditioning Technique for Electromagnetic[OL]. [27 December 2007] http://en.paper.edu.cn/en_releasepaper/content/17440
 
 
To efficiently solve large dense complex linear arising from electric field integral equations (EFIE) formulation of electromagnetic scattering problems, the multilevel fast multipole method (MLFMM) is used to accelerate the matrix-vector product operations. The symmetric successive over-relaxation (SSOR) preconditioner is constructed based on the near-field matrix of the EFIE and employed to speed up the convergence rate of iterative methods. This technique can be greatly improved by shifting the near-field matrix of the EFIE with the principle value term of the magnetic field integral equation (MFIE) operator. By comparison with other preconditioning techniques, numerical results demonstrate that the present method can reduce both the number of iterations and the computational time significantly with low cost for construction and implementation of preconditioners.
Keywords:Electromagnetic wave scattering, preconditioning techniques, iterative methods, shifted technique
 
 
 

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