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Error control in MLFMA with multiple-precision arithmetic
Date
2018-04-13
Author
Kalfa, Mert
Ergül, Özgür Salih
Ertürk, Vakur B.
Metadata
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We present a new error control method that provides the truncation numbers as well as the required digits of machine precision for the translation operator of the multilevel fast multipole algorithm (MLFMA). The proposed method is valid for all frequencies, whereas the previous studies on error control are valid only for high-frequency problems (i.e., electrically large translation distances). When combined with a multiple-precision implementation of MLFMA, the proposed method can be used to solve low-frequency problems that are problematic with a fixed-precision implementation. Numerical results in the form of optimal truncation numbers and machine precisions for a variety of box sizes and desired relative error thresholds are presented and compared with the methods or numerical surveys available in the literature.
Subject Keywords
Diagonalization
,
Error analysis
,
Low-frequency breakdown
,
Multilevel fast multipole algorithm
,
Multiple-precision arithmetic
URI
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85057329884&origin=inward
https://hdl.handle.net/11511/82894
DOI
https://doi.org/10.1049/cp.2018.0645
Conference Name
12th European Conference on Antennas and Propagation, EuCAP 2018 (9 - 13 Nisan 2018)
Collections
Department of Electrical and Electronics Engineering, Conference / Seminar
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We present a new error control scheme that provides the truncation numbers as well as the required digits of machine precision for the multilevel fast multipole algorithm (MLFMA). The proposed method is valid for all frequencies, whereas the previous studies on error control are valid only for high-frequency problems. When combined with a multiple-precision arithmetic framework, the proposed method can be used to solve low-frequency problems that would otherwise experience overflow issues. Numerical results...
Error Control of Multiple-Precision MLFMA
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BibTeX
M. Kalfa, Ö. S. Ergül, and V. B. Ertürk, “Error control in MLFMA with multiple-precision arithmetic,” London, İngiltere, 2018, vol. 2018, Accessed: 00, 2021. [Online]. Available: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85057329884&origin=inward.