Localization in WiMAX networks depending on map-supported path loss model

This paper considers the problem of improving localization accuracy in WiMAX networks by adjusting path loss model exponents depending on public road network information. First, localization depending on path loss model is discussed; the used path loss model is a common one, obtained for an urban environment. Second, the road network information is used to improve the accuracy by adjusting the path loss exponents for better range estimation. The results of the proposed approaches are illustrated and compared on an example whose data were collected from a WiMAX network in a challenging urban area in the Brussels capitol city.

Publication year:2009

Keywords:Fingerprinting, GPS, GSM, navigation, LBS, path loss model, Positioning accuracy, Power maps, received signal strength, road network information, RSS, time-difference of arrival, WiMAX