Wireless local area networks (WLANs) based on IEEE 802.11b standard are widely deployed to provide network connectivity without being tethered off of a wired network. An accurate planning of indoor radio networks and/or the setup of localization procedures based on IEEE 802.11 requires the characterization of the propagation channel. Starting from experimental data obtained in the campus area of the University of Rome Tor Vergata we evaluated the parameters for different multi-wall (MW) like path loss models. Differently from the standard MW model indicated in the literature, we included losses due to doors and fire proof doors that according to their status, open or closed, may lead to significant contributions to the overall attenuation. The developed channel model was used in a computer simulator for the optimal positioning of the access points inside the campus' buildings.

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Recently, wireless indoor location systems have been successfully used in many applications, such as asset tracking, indoor navigation, and inventory management. Such systems become essential in Public Safety and Disaster Relief (PSDR) scenarios, where a robust and reliable first responder positioning system can significantly increase safety in emergency operations. In this paper, we characterize the performance of a RFID-based indoor localization system. We present various tests aimed at assessing the capability of the ILS to identify first responders in different conditions. Results show that, by means of a correct dimensioning of the ILS, high efficiency can be achieved in localization.