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Null-Field Preconditioner With Selected Far-Field Contribution for 3-D Full-Wave EFIE

Negi, Yoginder Kumar and Balakrishnan, N and Rao, Sadasiva M and Gope, Dipanjan (2016) Null-Field Preconditioner With Selected Far-Field Contribution for 3-D Full-Wave EFIE. In: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 64 (11). pp. 4923-4928.

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Official URL: http://dx.doi.org/10.1109/TAP.2016.2600743

Abstract

In this paper, a stable and effective preconditioner for the method of moments-based electric field integral equation matrix, based on the null-field method, is presented to expedite the convergence of Krylov subspace-based fast iterative solution. The preconditioner is computed from all near-field blocks and selected far-field blocks in accordance with the null-field procedure. The final form of the preconditioner is block diagonal, and therefore generates no additional fill-ins in its inverse and is also amenable to parallelization. A complexity analysis is presented to show the near-linear cost of preconditioner construction and usage in terms of computation time and memory. The numerical experiments with a sequential implementation demonstrate on an average 1.5-3x speed-up in the iterative solution time over threshold-dependent incomplete LU-based preconditioners.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Division of Interdisciplinary Research > Supercomputer Education & Research Centre
Depositing User: Id for Latest eprints
Date Deposited: 07 Jan 2017 09:44
Last Modified: 07 Jan 2017 09:44
URI: http://eprints.iisc.ac.in/id/eprint/55866

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