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Time-of-flight (ToF) echo techniques have been recently suggested for ranging mobile devices over WiFi radios. However, these techniques have yielded only moderate accuracy in indoor environments because WiFi ToF measurements suffer from extensive device-related noise which makes it challenging to differentiate between direct path from non-direct path signal components when estimating the ranges....
Crowdsourced signal monitoring systems are gaining attention for capturing the wireless spectrum at large geographical scale. Yet, most of the current systems are still limited to simple power spectrum measurements reported by each sensor. Our objective is to enhance such systems with signal decoding capabilities performed in the backend while retaining the original vision of a low-cost and crowdsourced...
Self-localization systems based on the Time-of-Flight (ToF) of radio signals are highly susceptible to noise and their performance therefore heavily rely on the design and parametrization of robust algorithms. In this work, we study the noise sources of GPS and WiFi ToF ranging techniques and compare the performance of different self-positioning algorithms at a mobile node using those ranges. Our...
Automatic configuration and optimization of networks is a key concept in Long Term Evolution (LTE) systems. Handover (HO) performances are differentiator indicators among mobile networks. In this context, we propose a self-organized solution for the LTE handover parameters set up, based on mobility performance indicators that are accurately specified by the standard. The proposed solution consists...
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