Comparison of 900 and 1800 MHz Indoor Propagation Deterioration
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IEEE
(0) (0 Votes)Views: (2097) Date: (Publication Date: Dec. 2006) Pages: () -
Author: Helhel S. Sch. of Electr. & Electron. Eng. Akdeniz Univ. Antalya;
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Abstract: Abstract The results of signal strength measurements and ray tracing model calculations of indoor propagation at 900 and 1800 MHz are presented. Corridors are being illuminated by ceiling mounted 2 dB gain omni antennas. The objectives of these experiments are to study behavior of the received signal strength at 900 and 1800 MHz in comparison of cell coverage, signal attenuation and variation through the line of sight (LOS) and non line of sight (NLOS) orientation of halls. It is shown that large fluctuations occur between average signal levels in LOS and NLOS case of propagation. It is also obtained that ray tracing model neglecting diffraction effects work better for LOS then NLOS, and requires detailed database information for better prediction
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