Short term fading spatial dependence in indoor body-to-body communications

This paper presents the preliminary results of Body to Body (B2B) channel characterization, based on an extensive measurement campaign in an indoor environment in the ISM 2.4 GHz band. The peculiarity of B2B channels suggests the extension of classical stochastic models towards one that is aware of the position and mutual orientation of the bodies wearing the terminals. To reach this goal, three on-body antenna positions (head, belt and wrist) and multiple human mobility scenarios have been investigated in the measurements. In this work we focus on the spatial dependent characterization of short term fading and, specifically, on its dependence on mutual body orientation, concluding that, to have a reliable model, it is necessary to take into account this spatial dependence.