Outdoor-to-indoor radio propagation characteristics with 800 MHz band in an urban environment

When an indoor coverage area is designed in mobile communication systems, it is important to estimate the received power from an outdoor base station in order to evaluate the interference level indoors. This paper evaluates outdoor-to-indoor radio propagation with 800 MHz band through measurement campaigns at the lower multiple floors of some buildings in an urban environment. The evaluation result shows that propagation loss in an area close to a window does not follow the existing formula where loss is predicted in proportion to distance.