Browsing by Author "Liu, TR"

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Effective models in evaluating radio coverage on single floors of multifloor buildings
(1999-05-01)
Tarng, JH
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Liu, TR
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電信工程研究所
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Institute of Communications Engineering
An effective site-specific hybrid model is developed to predict the path loss and the effective radio coverage on single floors, The hybrid model, combined with a two-dimensional (2-D) model and an easy-to-use direct-transmitted ray (DTR) model, is incorporated with the building blueprint in usage, Both effects of the interior walls and the metallic objects such as whiteboards, bookcases, and standing air conditioners on radio propagation are considered. It is found that inclusion of metallic objects will enhance the performance of the model.
Modeling and measurement of 2.44-GHz radio out-of-sight propagation on single floors
(1997-01-01)
Liu, TR
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Tarng, JH
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交大名義發表
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電信工程研究所
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National Chiao Tung University
An easy-to-use DTR model combined with a patched-wall model is proposed to predict the path loss for out-of-sight propagation on a single floor through interior walls. The model demonstrates an accurate prediction, and is verified by comparison of the predicted path loss with the measured one of 2.44-GHz radio propagation at four different sites. (C) 1997 John Wiley & Sons, Inc.