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Theory of normal mode propagation in a line-of-sight street scenario is extended to include propagation into buildings through coupling to a diffuse indoor field. Signal strength predictions are in close agreement with measurements, producing 2 dB and ≤ 3.5 dB root-mean-square model-data difference, in line-of-sight and outdoor-indoor scenarios, respectively. The full 3-D field model predicts actual...
Diffusion theory is found to provide a simple yet accurate expression for the average received radio power loss indoors in non-Line-of-Sight. Agreement with extensive indoor power measurements is found at all ranges, unlike widely used power-laws. Resulting propagation loss has a large impact on the Signal-to-Interference-and Noise behavior, materially affecting conclusions on the value of cell splitting...
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