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Recent security methods propose to generate secret keys from Ultra Wide Band (UWB) channels. These solutions rely on the reciprocity and spatial channel correlation principles. This work aims at presenting empirical studies on the aforesaid properties. First, we verify the UWB reciprocity for different multipath scenarios. In these experiences, the reciprocity is always valid independently of distance...
Clock skew is defined as the rate of deviation of a device clock from the true time. The frequency of a device's clock actually depends on its environment, such as the temperature and humidity, as well as the type of crystal. The main contributions of this paper are two-fold. First, we experimentally validate that MICAz and TelosB sensor motes have different and unique clock skews. Furthermore, the...
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