Fast-factorization acceleration of MoM domain-decomposition: SFX-AIM and general

A. Freni*, P. De Vita, P. Pirinoli, L. Matekovits, G. Vecchi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

2 Citations (Scopus)

Abstract

Domain-decomposition (DD) for Integral Equation can be achieved by aggregating standard basis functions into specialized basis functions on each sub-domain; this results in a strong compression of the MoM matrix, which allows an iteration-free (e.g. LU decomposition) solution also for electrically large problems. Fast matrix-vector product algorithms can be used in the matrix filling and compression process of the employed aggregate-functions approach. In this paper we propose and demonstrate the use of the Adaptive Integral Method (AIM) fast factorization to accelerate the Synthetic Function eXpansion (SFX) DD approach. The method remains iteration-free, with a significant boost in memory and time performances, with analytical predictions of complexity scalings confirmed by numerical results. At a more general level, the complexity scaling of both stand-alone DD and its combined use with fast MoM is addressed analytically and discussed with respect to known literature accounts of various implementations of the DD paradigm, with non-obvious results and practical indications.

Original languageEnglish
Title of host publicationProceedings of the 6th European Conference on Antennas and Propagation (EuCAP)
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages276-277
Number of pages2
ISBN (Print)9781457709180
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event6th European Conference on Antennas and Propagation, EuCAP 2012 - Prague, Czech Republic
Duration: 26 Mar 201230 Mar 2012

Other

Other6th European Conference on Antennas and Propagation, EuCAP 2012
CountryCzech Republic
CityPrague
Period26/03/1230/03/12

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