Low-Memory Implementation of PITD Method Using a Thresholding Scheme
IEEE Microwave and Wireless Components Letters(2021)
Abstract
A precise-integration time-domain (PITD) method with a thresholding scheme is proposed to reduce the computation cost of the matrix exponential for solving electromagnetic (EM) problems. The finiteness of EM wave speed is used to analyze the structure of the matrix exponential, revealing that the dense matrix exponential can become sparse. A thresholding scheme for eliminating tiny and thus unimpo...
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Key words
Sparse matrices,Time-domain analysis,Finite difference methods,Eigenvalues and eigenfunctions,Memory management,Wireless communication,Stability criteria
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