Empirical Pseudo-Optimal Waveform Design for Dispersive Propagation Through Loamy Soil

Enhancement of intra-body propagation and communication under the Brillouin precursor perspective

“…Furthermore, we demonstrated that specific pulses and waveforms can be designed to achieve an optimal propagation within the medium of interest, such as in the case of the BP. The precursor retains most of the energy of the travelling signal and this energy also follows an algebraic decay trend [16]. This fact can probably influence the estimation of the specific absorption rate [28].…”

“…In any case, neglecting or eliminating this forerunner component supposes the removal of an important portion of the received signal power [16] and this fact can lead to under optimal receiver hardware performance specifically designed for on-body and/or through-body applications [18][19][20].…”

“…After the propagation analysis has been obtained, it is possible to design specific transmit waveforms with a nearoptimal performance in terms of pulse broadening and penetration depth [16]. In this paper, we have tested the performance of different pulses with this purpose.…”

“…Monocycle and multi-cycle settings are presented to illustrate the precursor performance in a better manner. The BP has been described [12,13,16] as a near-optimal performance input waveform in terms of the amplitude decay trend. It consists of a double cycle structure specifically designed to match dispersive media from the point of view of the broadening feature.…”

“…The frequency response can be seen as a frequency filter containing information about the effects of attenuation and phase for each frequency component of the potential signal travelling through it. We can then analyse the evolution of any input signal x(z, t) through the dispersive medium for any propagation depth z [14][15][16][17].…”