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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 metallicdoi:10.1109/25.764994 fatcat:7omyb4agbrdgrl3vg6mvpvlsdy