Results of indoor propagation measurement campaign for WLAN systems operating in 2.4 GHz ISM band

The indoor measurement campaign in the 2.45 GHz ISM frequency band was described. Two types of measurements and data processing - narrowband and wideband - were presented. The empirical parameters for standard indoor propagation models were derived. Time variations of WLAN signal level were investigated and the cumulative distribution functions based on log-normal distribution were determined. The position as well as the azimuthal orientation of the measurement notebook was considered. Using the results, the indoor coverage planning of WLAN systems is possible including the prediction of link availability and overall QoS. In addition, the measured data can be further used for angle diversity studies.