Path loss models for IEEE 802.11a wireless local area networks

Wireless local area networks (WLANs) based on IEEE 802.11a standard are 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. The dependence of the channel model parameters on the tilting of the Access Points embedded antennas is also investigated. The developed channel models were used in a computer simulator for the optimal RF coverage inside the campus' buildings.