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Time-Varying Path-Shadowing Model for Indoor Populated Environments

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3 Author(s)
Kashiwagi, I. ; Mobile Commun. Lab., Toshiba Corp., Kawasaki, Japan ; Taga, T. ; Imai, T.

This paper presents a path-shadowing model for indoor populated environments that has been developed based on computer simulations. The propagation paths between the transmitting and receiving points in an empty rectangular space are determined using the ray-tracing method, in which moving quasi-human bodies that are modeled as cylinders with a finite height are generated in the space, and intersections of the paths with the bodies are counted. From the results, the shadowing probabilities, durations, and intervals are evaluated for each propagation path, and this shadowing process is characterized as a Markov process. This paper proposes a method that individually generates the shadowing effects on each propagation path. The measurement results of the path-shadowing characteristics using a 5.2-GHz high-resolution channel sounder are presented, and the validity of this model is confirmed. Similar measurement results using a photoelectric sensor are also presented to reinforce the channel-sounding measurement results.

Published in:

Vehicular Technology, IEEE Transactions on  (Volume:59 ,  Issue: 1 )

Date of Publication:

Jan. 2010

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