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The characterization of the performance of wireless devices is key to developing new RF products conforming to the latest communications protocols. Traditionally, communication performance tests have focused on the RF performance of the tested devices, e.g., smart phones, pads, laptops, and so on. In particular, the focus has shifted from conducted (i.e., cabled) measurements to more realistic over-the-air...
The goal of the work is to investigate the Radio Frequency (RF) propagation of ZigBee devices operating within a hospital environment to analyze their real indoor behaviour to design healthcare systems. Different Received Signal Strength Inidcation (RSSI) measurement campaigns have been carried out to characterize the main propagation features. On the basis of the experimental results it has been...
Wireless sensors are widely used in applications where small amount of data need to be transmitted over distances not exceeding several tens of meters, with low energy requirements. From the definition, the RSSI is the relative received signal strength in a wireless environment. There is a direct link between the RF power level received by one node and the RSSI indication. We used for the measurements...
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