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Optimal a priori clipping estimation for wavelet-based method of moments matrices

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5 Author(s)
Andriulli, F.P. ; Dept. of Electron., Politecnico di Torino, Italy ; Vecchi, G. ; Vipiana, F. ; Pirinoli, P.
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Wavelet bases are mainly used in the methods of moments (MoM) to render the system matrix sparse; clipping entries below a given threshold is an essential operation to obtain the desired sparse matrix. In this paper, we present a novel a priori way to estimate the clipping threshold that can be used if one wants an error on the solution below a desired accuracy. The procedure has a very low computational complexity, typically of O(N).

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Antennas and Propagation, IEEE Transactions on  (Volume:53 ,  Issue: 11 )