Indoor Radio Channel Characterization of Spread Spectrum Systems

The implementation of wireless communications in office buildings requires the profound knowledge of signal penetration within buildings. This knowledge should include information, concerning the in-building structure that strongly affects the signal transmission. This paper contributes to the modeling of propagation losses and measurement techniques in modern office buildings for Spread Spectrum systems by presenting measurement results in 2.4 GHz. The measurements were conducted within National Technical University premises in Athens, Greece. The purpose of the measurement campaign was to study the radiocoverage of the three floor story building of Electrical Engineering. The measurement system and experimental procedures are described and analysis results are presented. Path loss exponents, absolute path loss values path loss and contour plots are estimated for the three floors of the buildi ng. Statistical analysis is also presented.