Comparison of various methods for indoor RF fingerprinting using leaky feeder cable

RF (Radio Frequency) Fingerprinting for indoor localization using wireless local area networks attracted significant attention throughout the last decade. A severe drawback of this approach however is the laborious effort to calibrate the radio map. Especially in case of environmental changes recalibration becomes necessary. The main focus of our research project WIPoS (Wireless Indoor Positioning System) is to solve this problem by appropriate rf engineering and optimized methods. This paper points out the main advantages for the application of leaky feeder cables for indoor localization. A new type of LCX (Leaky Coxial Cable), which satisfies the needs of positioning, is proposed. We also analyze the performance in a hallways scenario with only two signals by comparing various positioning algorithms and deflect some suitable methods for localization with leaky feeder (LF) cables.