Parallel computing of finite difference algorithm for parabolic equation based on JASMIN and its application

The computation speed will decrease dramatically in solving the radio wave propagation problems in urban cells for the reason that the grid step of finite difference algorithm for parabolic equation is strictly restricted by wavelength. To solve this problem, the parallel method of finite difference parabolic equation is studied based on JASMIN framework, which is realized by dividing the step surface into multiple patches and being assigned to different processors, and the correctness is verified by comparing with analytic solution. Meanwhile, the efficiency of parallel program is further analyzed. The example shows that the solution efficiency of the finite difference parabolic equation is improved effectively. Finally, the electromagnetic characteristics of a telecom base station in urban cell with nine regular buildings are simulated and analyzed. It shows that the covering characteristics of the base station can be obtained, which will provide reference for the base station location.