Body area networks consist of a number of biological sensors communicating over the air with a central sink placed in close proximity of the human body. A promising solution is to use multisensor multiantenna ultrawideband architecture; each sensor carries one antenna, while the central sink supports an antenna array. In this paper, a complete analytical channel model has been developed for the on-body diffracted waves mechanism. It builds on the existing IEEE 802.15.4a standard channel model and offers an innovative space-time correlation model.
Van Roy, S., Oestges, C., Horlin, F., & De Doncker, P. (2010). A Comprehensive Channel Model for UWB Multisensor Multiantenna Body Area Networks. IEEE Transactions on Antennas and Propagation, 58(1), 163-170. https://doi.org/10.1109/TAP.2009.2036280 (Original work published 2010)