Modification of Ray-Launching Method for Accurate 2D Indoor Propagation Analysis

Ryoichi SATO  Hiroshi SHIRAI  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E94-C   No.1   pp.55-58
Publication Date: 2011/01/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E94.C.55
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
Category: Radiation and Propagation
Keyword: 
ray-launching method,  shooting and bouncing rays,  collective ray,  multiple reflections,  Brewster's angle,  indoor propagation,  

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Summary: 
This paper presents an efficient ray-launching method for 2D indoor propagation problem, by including crucial multiple reflection effect inside wall. We here focus on the derivation of the reflected and transmitted ray solutions at/through wall when a magnetic source is located in the indoor environment. An efficient approximation, which is called collective ray approximation, is carried out to bundle or collect the internal multiple reflected rays into the primary one. It is resultantly confirmed from the detailed numerical experiments that the derived collective ray solutions can be confidently effective when the internal reflections strongly contribute to the propagation characteristic in the propagation environment, regardless of angle of the incidence.