期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
COMPARISONS OF RAY-TRACING AND PARABOLIC EQUATION METHODS FOR THE LARGE-SCALE COMPLEX ELECTROMAGNETIC ENVIRONMENT SIMULATIONS 被引量:1
1
作者 YUEWEI SHEN LIN ZHANG +3 位作者 DENGKUN LIU YINGNIAN WU LAN MU ALPH CHUNTSINGER 《International Journal of Modeling, Simulation, and Scientific Computing》 EI 2012年第2期42-68,共27页
It is important for the wireless communication field to conduct research on large-scale complex electromagnetic environment(CEME)simulation.There exist many models for computing CEME simulation,including empirical mod... It is important for the wireless communication field to conduct research on large-scale complex electromagnetic environment(CEME)simulation.There exist many models for computing CEME simulation,including empirical models,half-empirical or halfdeterministic models and deterministic models.Most of these models cannot obtain satisfactory results due to the limitation of the capacity of computers.The ray tracing(RT)and parabolic equation(PE)methods are very suitable for large-scale CEME simulation.Based on the introduction of RT and PE,qualitative comparisons of the two methods are analyzed in view of algorithm theory,the category of the model,solution to the model and the application field,and then four specific indices are focused on to analyze the computational complexity,accuracy,speed and parallelism in details.The numerical experiments are presented by the three-dimensional(3D)RT method employing the software of Wireless InSite(WI)and a quasi-3DPE method using the sliced method.Although both RT and PE methods can achieve high speedup using coarse-grained parallel computing,the experimental results indicate that the PE method can obtain a higher speed than the RT method,and the two methods can acquire an approximate precision.A hybrid procedure using both RT and PE methods can obtain a better result for solving CEME problems. 展开更多
关键词 complex electromagnetic environment(CEME) ray tracing(RT) threedimensional parabolic equation(3DPE) complexITY parallelism.
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部