FDTD Method as a Counterpart of Ray-Tracing Method to Analyze Radio Wave Propagation

Suguru IMAI  Kenji TAGUCHI  Tatsuya KASHIWA  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E100-C   No.1   pp.68-74
Publication Date: 2017/01/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E100.C.68
Type of Manuscript: Special Section PAPER (Special Section on Recent Progress in Electromagnetic Theory and Its Application)
Category: 
Keyword: 
FDTD method,  ray-tracing method,  radio wave propagation,  path loss,  delay profile,  angular profile,  

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Summary: 
Recently, computer speed and memory capacity have been advanced. Therefore, applicable space size or equivalently the frequency in the FDTD method has been increased similar as the ray-tracing method for radio wave propagation. The ray-tracing method can obtain easily important parameters such as path loss, delay profile and angular profile. On the other hand, the FDTD method seems difficult to obtain an angular profile. We can overcome this problem by applying the DOA estimation method to the FDTD method. In this paper, we show that the FDTD method can be used as a counterpart of the ray-tracing method to analyze radio wave propagation of large space by using DOA estimation method such as MUSIC method.