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This paper presents the characteristics of electromagnetic waves propagating inside human body at Terahertz frequencies and an initial study of the system performance of nano-network. It has been observed that the path loss is not only the function of distance and frequency but also related to the dielectric loss of human tissues. Numerical results have been compared with analytical studies and a...
With the growth of the demand of smaller and smaller implantable devices, THz technologies becomes appealing for potential applications in Body Area Networks at nano-scale. As an essential part for understanding the in-body propagation at THz frequency numerical investigations are presented in this paper to simulate the absorption path loss of fat at THz frequency. The results of the proposed analysis...
Body centric wireless communications are now a well-established field of research. Most of the available work is focused on frequencies up to 12GHz, and covers various aspects concerning the communication, from signal propagation to antenna design. Recently, the interest over V and W bands has been growing, due to the presence of unlicensed portions of the spectrum, and the ever increasing availability...
The development of ultra low power wireless sensors for customized wearable medical devices requires patient specific information for the evaluation of the on-body communication channel. Direct measurements on human subjects are impractical for many applications. In such cases, numerical techniques for electromagnetic analysis, such as Finite Differences in Time Domain (FDTD), is an attractive alternative...
This paper presents an experimental characterisation of off-body radio channels using ultra wideband wireless tags for body-centric wireless networks to be applied in healthcare application. The operating frequency of the tags used for this measurement is 5.9~7.25 GHz. Statistical path loss parameters and a path loss model of nine different off-body channels for the propagation in indoor environment...
This paper presents ultra wideband (UWB) off-body radio channel characterisation for both line-of-sight (LOS) and non-line-of-sight (NLOS) communication scenarios. Measurement campaigns were performed in the indoor environment using UWB wireless active tags. The path loss of nine different off-body radio channels for LOS and NLOS communication scenarios is shown and analysed. Results show that maximum...
Variation in path loss models with respect to orientation of human body for both line-of-sight (LOS) and non-line-of-sight (NLOS) scenarios for ultra wideband off-body communication is experimentally and statistically investigated in this paper. Results show that for every 1° change in orientation angle between off-body transmitter and on-body receiver, path loss varies by almost 0.097 dB for LOS...
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