Modeling the Effects of Nearby Buildings on Inter-Floor Radio-Wave Propagation

Autor:	Andrew C. M. Austin, Michael J. Neve, Gerard B. Rowe, Ryan J. Pirkl
Rok vydání:	2009
Předmět:	Physics Signal processing business.industry Acoustics Finite-difference time-domain method Radio propagation Optics Transmission (telecommunications) Reflection (physics) Transient response Electrical and Electronic Engineering business Impulse response Communication channel
Zdroj:	IEEE Transactions on Antennas and Propagation. 57:2155-2161
ISSN:	1558-2221 0018-926X
Popis:	Two buildings (A and B) have been modeled and analyzed with a 2D TEz implementation of the finite-difference time-domain (FDTD) algorithm in order to identify and characterize the mechanisms allowing signals to propagate between floors, specifically reflection and scattering from nearby buildings. Results have been extended to 2.5D by assuming isotropic spreading in the third dimension. In both scenarios considered, reflections from surrounding buildings are found to increase the average received power on adjacent floors-up to 9.7 dB and 32 dB for buildings A and B respectively. Measurements of the impulse response in Building A, made with a sliding correlator channel sounder, show a number of long-delay pulses, which can be attributed to specific reflection paths. Based on these findings, a simple two-component propagation model to predict the sector-average signal strengths is proposed and validated against measurements of the received power. The direct component is modeled as free space with a 22 dB/floor attenuation factor, and the reflected component is modeled as free space with reflection/transmission coefficients of 0.5. The RMS prediction error for this model is 3.2 dB.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7ea879d636bda669d2993f2e65addde3 https://doi.org/10.1109/tap.2009.2021965 Zobrazit plný text záznamu