IEEE TRANS
Channel modeling and analysis of electromagnetic capacity wireless nanonetwork terahertz band
Summary
Nanotechnology is expected to provide new solutions for a variety of biomedical applications, industrial and military fields. On the nanoscale, nano-machine is considered to be able to perform very simple tasks most basic functional unit. Communication between nanomachines enable them to perform more complex functions in a distributed manner. In this paper, the latest development of molecular electronics are reviewed in order to promote the study of terahertz band (0.1-10.0 THz), in order to achieve electromagnetic (EM) communication between the nanodevice . Based on radiative transfer theory and the molecular absorption, electromagnetic propagation model to develop a new communication THz. The model considers the terahertz wave band total path loss suffered molecule and propagates within a very short distance absorb noise . Finally, for different power allocation schemes (including those based on long-femtosecond pulse transmission scheme) using the model to study the terahertz band channel capacity . The results show that, for a very short transmission distance (magnitude of tens of millimeters), terahertz channel supporting very large bit rates, up to several megabytes megabits per second , which provides distinct examples being nano communication network.
in conclusion
Communication between the nano device to extend the function of nanomachines limited by coordination, information sharing and fusion. Nano-Network will promote the application of nanotechnology in various fields from health care to homeland security. In this article, we will promote an enabling technology as graphene terahertz frequency range (0.1-10.0 THz) in the EM future nano-networks. We have developed a channel model based on the theory of radiative transfer, to compute path loss and noise in the terahertz band. Then, we propose a different power allocation schemes, and finally, we developed the use of a channel model to calculate the terahertz band channel capacity.
The results showed that the molecular terahertz communication channel to the medium composition and have a strong dependency of the transmission distance. The main factors affecting the behavior of the terahertz band is absorbed by water vapor molecules, which will not only attenuate the signal transmission, but also the introduction of colored noise. In a very short range, i.e. for the transmission distance of tens of millimeters, the terahertz band can be considered close to 10 THz wide single transmission window . This is the main difference from the conventional terahertz communication system, which is 350 GHz or less focused on the use of a single transmission window.
Since THz not only ultra-high capacity channel supporting very high transmission bit rate, but also to make the new information coding and modulation as well as new networking protocols more suitable for a nano resource constrained device becomes possible. Among other things, we recommend using a femtosecond-long pulses to transmit information between nanomachines. We recognize that the implementation can support such communication scheme or to integrate them into nanoscale devices nano transceiver aspects, there are still some challenges , but we believe that the expected impact on our society nano network will stimulate and promote its development .
Broadband terahertz signal propagates through the fog
Experiments comparing the dust cloud terahertz and infrared data signal attenuation
910m terahertz pulse propagation in the atmosphere
Between the building THz-TDS measuring atmospheric
Atmospheric terahertz ultrahigh bit-rate digital communication channels and experimentally confirmed physical understanding of impulse radio
Learn terahertz pulse propagation in the atmosphere
Wherein two atmospheric terahertz optimal wireless digital communication link for simulating
THz-TDS atmospheric characteristics of digital communication channels and Its Application
Atmospheric water vapor continuum absorption of terahertz radiation effect
