Jm. Song et Wc. Chew, MULTILEVEL FAST-MULTIPOLE ALGORITHM FOR SOLVING COMBINED FIELD INTEGRAL-EQUATIONS OF ELECTROMAGNETIC SCATTERING, Microwave and optical technology letters, 10(1), 1995, pp. 14-19
The fast multipole method (FMM) has been implemented to speed up the m
atrix-vector multiply when an iterative method is used to solve the co
mbined field integral equation (CFIE). FMM reduces the complexity from
O(N-2) to O(N-1.5). With a multilevel fast multipole algorithm (MLFMA
), it is further reduced to O(N log N). A 110, 592-unknown problem can
be solved within 24 h on a SUN Sparc10. (C) 1995 John Wiley & Sons, I
nc.