Radio channel characterization of intra-body propagation under frequency dispersive perspective

In this paper we consider the analysis of the Brillouin precursor formation to understand the impairments undergone by ultra wideband waveforms propagating through naturally dispersive media as human tissues. By means of a frequency-domain method based on considering the frequency response of the medium under study, the effect of these media on the evolution of an input signal can be seen as a frequency filtering. The simulations were performed at a centre frequency of 6.5GHz and for a signal bandwidth of 3GHz. The experienced impairments are assessed in terms of the degradation experienced by the main functions that model the human body radio channel: power delay profile and frequency cross-correlation function (FCF). For them we analysed the effect of the dispersive propagation in terms of parameters used for information retrieval: peak amplitude decay, CCF secondary sidelobe level and multipath detectability. body radio propagation. We also review the definition of the parameters adopted to quantify the electromagnetic absorption inside biological tissue under the dispersive perspective.