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    New upper and lower bounds line of sight path loss model for mobile propagation in buildings
    (2008-03-03)
    Phaiboon, Supachai
    ;
    Phokharatkul, Pisit
    ;
    Somkuarnpanit, Suripon
    This paper proposes a method to predict line-of-sight (LOS) path loss in buildings. We performed measurements in two different types of buildings at a frequency of 1.8 GHz and propose a new path loss model with its upper and lower bounds. The upper and lower bounds depend on max and min values of sampled path loss data. This makes our model limit path loss within the boundary lines. The model includes time-variant effects from the object movement from people in the building and cars in parking areas. These influence reasonably on wave propagation. The results have shown that the proposed model will be useful for the design of the indoor wireless communication systems. © 2007 Elsevier GmbH. All rights reserved.
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    Upper-and lower-bound path-loss modeling for indoor line-of-sight environments
    (2005-01-01)
    Phaiboon, Supachai
    ;
    Phokharatkul, Pisit
    ;
    Somkuarnpanit, Suripon
    ;
    Boonpiyathud, Sitchai
    This paper proposes a method to predict line-of-sight (LOS) path loss in buildings. We performed measurements in two different type of buildings at a frequency of 1.8 GHz and propose upper-and-lower bounds path loss models which depend on max and min values of sample path loss data. This makes our models limit path loss within the boundary lines. The models include time-variant effects such as people moving and cars in parking areas with their influence on wave propagation that is very high. The results have shown that the proposed models will be useful for the system and cell design of indoor wireless communication systems. © 2005 IEEE.