Showing papers by "Sebastian Fudickar published in 2013"

Mobile device for wireless data communication and a method for communicating data by wireless data communication in a data communication network

Abstract: The invention relates to a mobile device for wireless data communication, the device comprising the following functional units a central data processing unit, a memory unit, a display element, a user interface, a power supply unit, and a wireless transceiver configured for wireless data communication using the same frequency ranges of the sub 1 GHz frequency band for both sending and receiving data, each of the functional units being functionally connected to at least the central data processing unit. Furthermore, a method for communicating data by wireless data communication in a data communication network is disclosed.

On the comparability of indoor localization systems' accuracy

Abstract: While indoor localization is gaining increased relevance, the comparability of the published accuracies for localization algorithms is rarely given since the metrics, node densities and the evaluation environments vary. To overcome this limitation, a simulator for indoor localization algorithms called simLoc is presented which uses prerecorded received signal strengths of two different buildings. simLoc simulates both, different path loss models and different localization algorithms. Therefore, the simulator can be used to compare different algorithms, but it can also be used to find optimal parameter settings. This was done to optimize a localization system for mobile devices equipped with a 868 MHz radio. As a result, the optimized algorithm achieves significantly lower error-distances, floor-errors, and localization-errors than the model-based RADAR system.