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A novel and efficient hybrid model of radio multipath-fading channels in indoor environments

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4 Author(s)
Tarng, J.H. ; Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsin-Chu, Taiwan ; Wen-Shun Liu ; Yeh-Fong Huang ; Jiunn-Ming Huang

Presents a novel and efficient hybrid model combining a two-dimensional (2-D) site-specific model and a statistical model to characterize multipath fading in indoor environments. The site-specific model describes the propagation effects of interior walls and building walls. The latter model characterizes the effect of scattering due to rough surface boundaries and/or randomly positioned scatterers such as furniture and personnel, which significantly affects small-scale fading. The hybrid model is computationally efficient since only the 2-D site-specific model is needed. In addition to accurately predicting mean field strength, the model can effectively quantify the relative mean contribution of diffused scattering with a factor r. The factor is also an effective index to quantify the cluttering strength of the propagation environment: 1) light-cluttering situation r≤0.35 and 2) heavycluttering situation r≥0.65. Some blind tests validate the effectiveness of the model. A large amount of experimental data for 2.44-GHz radio at many different sites shows that a Nakagami distribution describes the fading distribution well.

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Antennas and Propagation, IEEE Transactions on  (Volume:51 ,  Issue: 3 )