UWB and mmWave Communication Techniques and Systems for Healthcare - Ultra-Wideband and 60 GHz Communications for Biomedical Applications - page 19

Fig. 7 VISION-based scenario of system for impaired children control
caregiver. This is a typical remote monitoring system, where the 3D-video sensing
is fundamental for the success of cares.
VISION infrastructure [ 38 ] is able to provide both functionalities in an optimized
way because its wireless technology allows the best placement of sensors transpar-
ently to the impaired child, even on his/her body; the broadband technology enables
the real-time transfer to the control unit and the middleware allows the best reliability
of the system and the selection of the relevant data to be collected and transmitted.
VISION can additionally provide artificial tools, such as virtual agents and avatars,
that can help in maintaining the attentive focus of the children and enhance the quality
of their learning, engaging them in new activities as soon as the monitoring of their
involvement in the current activity is understood by the system as degraded or not
any more attractive. For further details, we refer the interested reader to [ 7 ].
Because this is an indoor scenario, VISION project is focusing on the optimization
of the 60-GHz broadband communication system starting from an accurate modelling
of the indoor environment. A 60-GHz measurement campaign was performed in a
modern building at the University of L'Aquila, Italy. Measurements were realized for
two large bands around 60 GHz, i.e. 54-59 and 61-66 GHz. Measurements were done
at several different locations, in LoS and non-line-of sight (NLoS) scenarios and using
different combinations of transmitting and receiving antennas: either omnidirectional
or directional antennas with a beam width of 30 or 9 ◦ , respectively. In [ 39 - 41 ], it was
shown that the parameters of the path loss models for 60-GHz channels in modern
buildings assume values comparable to UWB channels. Another contribution of
VISION is the testing of the proposed 802.11ad, 60-GHz standard over a realistic
wireless channel, including the presence of human bodies around or in the proximity