Title :
Propagation over terrain and urban environment using the multilevel UV method and a hybrid UV/SDFMM method
Author :
Xu, Peng ; Tsang, Leung
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, China
Abstract :
Propagation over terrain and urban environments are studied using 2D simulations of Maxwell equations. For the case of terrain propagation, the multilevel UV method is used to accelerate the method of moments (MoM) solution. We consider propagation over a region of 14.42 km at 1,500 MHz that has 720,896 MoM surface unknowns. For the case of the urban environment, because of the sharp rise in surface heights, we use a hybrid UV/SDFMM method. We consider a problem over 2.3 km with building heights of 18 m for 90,112 MoM surface unknowns at 900 MHz. Computations of all cases were performed with a single processor. Based on the simulations, we study fading and signal amplitude variation with distance.
Keywords :
Maxwell equations; UHF radio propagation; computational electromagnetics; fading; method of moments; 14.42 km; 1500 MHz; 18 m; 2.3 km; 900 MHz; Maxwell equation 2D simulation; MoM surface unknowns; building heights; channel model; computational electromagnetics; distance induced signal amplitude variation; fading; hybrid UV/SDFMM method; method of moments; multilevel UV method; multilevel steepest descent fast multipole method; radio wave propagation; terrain propagation; urban environment propagation;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2004.839631
