Investigation and performance analysis of Nanoscale communication network for biomedical application

Abstract

Biomedical application consists of the transmission of information inside the human body using nanoscale communication network. This transmission is affected by a number of factors. In this thesis, our goal was to investigate the behavior of different factors inside the human body. We have used the Debye Relaxation model to investigate the effect of polarization inside the human body, the effect of relative permittivity with respect to terahertz band in different tissues. After that, we have investigated the parameters of path loss, namely spreading loss, absorption loss and scattering loss. Finally, we have observed the behavior of conductivity inside the human about how fast it can receive a signal without being attenuated from different skin perspectives. With the advancement of small-sized-plasmonic signal sources, antennas, and detectors, wireless communications among intrabody nanodevices will be empowered at terahertz band (0.1–10 THz). This outcome motivates real-time monitoring of both medical test parameters, biological and chemical substances inside the human body are yearning that could facilitate pathology control and ensure better diagnostic and treatment effectiveness. Variegated characteristics like polarization, relative permittivity, path loss, conductivity, molecular absorption and outage probability of Terahertz (THz) band impact every fundamental communication system for the exchange of data between nanodevices. The complete pathloss is calculated by the combined impact of propagating wave spread, molecular absorption from human tissues, as well as scattering from both tiny and large body particles. Numerical results show that, skin (dermis and epidermis) has the minimum pathloss and that makes it better choice for nanodevice implantation. The outage probability also shows that it is possible to establish an intrabody communication network in human body.