Efficient linear system solution in moment methods using wavelet expansions

An efficient strategy is proposed to solve linear systems encountered when method of moments (MoM) and wavelet expansions are used. It exploits a high-performance matrix bandwidth reduction algorithm so that it can be taken advantage of direct banded solvers, which have a more favorable computational complexity with respect to the typically used iterative sparse methods. Speedups of up to seven have been experienced with respect to standard iterative sparse solvers.