Sparsified ACA for accelerated iterative solution of the MoM linear system

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Title:	Sparsified ACA for accelerated iterative solution of the MoM linear system
Author:	Heldring, Alexander; Rius Casals, Juan Manuel; Úbeda Farré, Eduard; Tamayo Palau, José María
Other authors:	Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. ANTENNALAB - Grup d'Antenes i Sistemes Radio
Abstract:	A new algorithm, the Sparsified Adaptive Cross Approximation (SPACA) is presented for fast iterative solution of the Method of Moments linear system. Like ordinary ACA, it is a completely kernel-independent method, but it is faster and yields a higher compression rate than ordinary ACA, without compromising the accuracy. As an example, the RCS of a perfectly conducting sphere is computed using up to 786,432 basis functions. It is shown that SPACA exhibits close to NlogN complexity for this problem.
Abstract:	Peer Reviewed
Subject(s):	-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica -Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Antenes i agrupacions d'antenes -Electromagnetism -Antennas (Electronics) -Electromagnetisme -Antenes (Electrònica)
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Document type:	Article - Submitted version Conference Object
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