Abstract
The paper investigates the statistical modeling of on-body ultra wideband (UWB) radio channels based on measurements conducted in five different rooms for wireless body area network (WBAN) applications. Previously the authors proposed a UWB propagation loss model for WBAN and considered the effects of room volume. A measured delay profile can be divided into two domains: in the first domain (0 < t ≤ 4 ns) there is either direct (for line of sight) or diffracted (for non line of sight) wave which is dependent on propagation distance along the perimeter of the body, but essentially unrelated to room volume; and in the second domain (t > 4 ns) multipath components are dominant and dependent on room volume. The first domain was modeled with a conventional power decay law model, and the second domain with a modified Saleh-Valenzuela model considering the room volume.
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