Outdoor-to-indoor channels at 2.45 GHz and 5.2 GHz for geolocation applications

Time Based (TB) localization in terrestrial mobile radio as an augmentation for global navigation satellite systems has recently gained plenty of interests. As an essential tool to develop suitable algorithms for positioning applications in mobile radios, channel models for wireless transmissions have growing significance. Currently there is a lack of investigations on comparing the propagation characteristics at 2.45 GHz and 5.2 GHz for positioning applications. Therefore, we present a statistic evaluation based on a channel measurement campaign. Several propagation characteristics are researched like the received power and the delay spread. While some measures like the received power is carrier frequency dependent, most of the measures like the non line-of-sight bias or the delay spread are independent of this measurement parameter. Instead they are more influenced by the location and the environment.