Abstract
Ultra-Wideband (UWB) frequency band is becoming an alternative for the implanted RF link in Wireless Body Area Networks (WBAN). Previous works on WBAN and in the UWB frequency band study the channel characterization, where the effect of the antenna has been considered as a part of it. Nevertheless, in WBAN this effect is highly relevant and often underestimated. This work presents an experimental channel modeling of lossy human body tissue with one in-body antenna and two different on-body antennas, omnidirectional and directive antennas, for the UWB frequency band. The UWB frequency band has some advantages for some medical devices such as the Wireless Capsule Endoscopy (WCE) which has a large bandwidth and low power requirements. Thus, in this work, the channel models obtained are used to evaluate the performance of RSS-based localization of the capsule inside the lossy tissue during endoscopy.
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