Channel modeling of multilayer diffusion-based molecular nano communication system

In nanoscale communication, diffusion-based molecular communication (DBMC) in which information is encoded into molecule patterns by a transmitter nanomachine, has emerged as a promising communication system, particularly for biomedical and healthcare applications. Although, numerous studies have be...

Full description

Saved in:

Bibliographic Details
Main Author:	Md Mustam, Saizalmursidi
Format:	Thesis
Language:	English English
Published:	2016
Subjects:	TK5101-6720 Telecommunication Including telegraphy, telephone, radio, radar, television
Online Access:	http://eprints.uthm.edu.my/893/1/24p%20SAIZALMURSIDI%20MD%20MUSTAM.pdf http://eprints.uthm.edu.my/893/2/SAIZALMURSIDI%20MD%20MUSTAM%20COPYRIGHT%20DECLARATION.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-uthm-ep.893
record_format	uketd_dc
spelling	my-uthm-ep.8932021-09-06T08:26:00Z Channel modeling of multilayer diffusion-based molecular nano communication system 2016-08 Md Mustam, Saizalmursidi TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television In nanoscale communication, diffusion-based molecular communication (DBMC) in which information is encoded into molecule patterns by a transmitter nanomachine, has emerged as a promising communication system, particularly for biomedical and healthcare applications. Although, numerous studies have been conducted to evaluate and analyze DBMC systems, investigation on DBMC system through a multilayer channel has received less attention. The aims of this research are to mathematically model a closed-form expression of mean molecular concentration over multilayer DBMC channel, to formulate channel characteristics, and to conduct performance evaluation of multilayer DBMC channel. In the mathematical model, the propagation of molecules over an n-layer channel is assumed to follow the Brownian motion and subjected to Fick’s law of diffusion. The partial differential equation (PDE) of the time rate change of molecular concentration is obtained by modeling the n-layer channel as an n-resistor in series and considering the conservation law of molecules. Fourier transform and Laplace transform were used to obtain the solution for the PDE, which represents the mean molecular concentration at a receiver nanomachine. In the formulation, channel characteristics such as impulse response, time delay, attenuation or the maximum peak, delay spread and capacity were analytically obtained from the mean molecular concentration. In this stage, the multilayer channel is considered as a linear and deterministic channel. For the performance evaluation, the air-waterblood plasma medium representing the simplified multilayer diffusion model in the respiratory system was chosen. It was found that both analytical and simulation results of mean molecular concentration using Matlab and N3Sim were in good agreement. In addition, the findings showed that the higher the average diffusion coefficient resulted in a smaller dispersion of channel impulse response, and shortened the channel delay spread as well as time delay. However, the channel attenuation remains unchanged. In the performance evaluation, an increase of 100% in the transmission distance increased the time delay by 300% but decreased the maximum peak of molecular concentration by 87.5%. A high channel capacity can be achieved with wide transmission bandwidth, short transmission distance, and high average transmitted power. These findings can be used as a guide in the development and fabrication of future artificial nanocommunication and nanonetwork systems involving multilayer transmission medium. Implication of this study is that modeling and analyzing of multilayer DBMC channel are important to support biomedical applications as diffusion can occur through a multilayer structure inside the human body. 2016-08 Thesis http://eprints.uthm.edu.my/893/ http://eprints.uthm.edu.my/893/1/24p%20SAIZALMURSIDI%20MD%20MUSTAM.pdf text en public http://eprints.uthm.edu.my/893/2/SAIZALMURSIDI%20MD%20MUSTAM%20COPYRIGHT%20DECLARATION.pdf text en staffonly phd doctoral Universiti Teknologi Malaysia Faculty of Electrical Engineering
institution	Universiti Tun Hussein Onn Malaysia
collection	UTHM Institutional Repository
language	English English
topic	TK5101-6720 Telecommunication Including telegraphy, telephone, radio, radar, television
spellingShingle	TK5101-6720 Telecommunication Including telegraphy, telephone, radio, radar, television Md Mustam, Saizalmursidi Channel modeling of multilayer diffusion-based molecular nano communication system
description	In nanoscale communication, diffusion-based molecular communication (DBMC) in which information is encoded into molecule patterns by a transmitter nanomachine, has emerged as a promising communication system, particularly for biomedical and healthcare applications. Although, numerous studies have been conducted to evaluate and analyze DBMC systems, investigation on DBMC system through a multilayer channel has received less attention. The aims of this research are to mathematically model a closed-form expression of mean molecular concentration over multilayer DBMC channel, to formulate channel characteristics, and to conduct performance evaluation of multilayer DBMC channel. In the mathematical model, the propagation of molecules over an n-layer channel is assumed to follow the Brownian motion and subjected to Fick’s law of diffusion. The partial differential equation (PDE) of the time rate change of molecular concentration is obtained by modeling the n-layer channel as an n-resistor in series and considering the conservation law of molecules. Fourier transform and Laplace transform were used to obtain the solution for the PDE, which represents the mean molecular concentration at a receiver nanomachine. In the formulation, channel characteristics such as impulse response, time delay, attenuation or the maximum peak, delay spread and capacity were analytically obtained from the mean molecular concentration. In this stage, the multilayer channel is considered as a linear and deterministic channel. For the performance evaluation, the air-waterblood plasma medium representing the simplified multilayer diffusion model in the respiratory system was chosen. It was found that both analytical and simulation results of mean molecular concentration using Matlab and N3Sim were in good agreement. In addition, the findings showed that the higher the average diffusion coefficient resulted in a smaller dispersion of channel impulse response, and shortened the channel delay spread as well as time delay. However, the channel attenuation remains unchanged. In the performance evaluation, an increase of 100% in the transmission distance increased the time delay by 300% but decreased the maximum peak of molecular concentration by 87.5%. A high channel capacity can be achieved with wide transmission bandwidth, short transmission distance, and high average transmitted power. These findings can be used as a guide in the development and fabrication of future artificial nanocommunication and nanonetwork systems involving multilayer transmission medium. Implication of this study is that modeling and analyzing of multilayer DBMC channel are important to support biomedical applications as diffusion can occur through a multilayer structure inside the human body.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Md Mustam, Saizalmursidi
author_facet	Md Mustam, Saizalmursidi
author_sort	Md Mustam, Saizalmursidi
title	Channel modeling of multilayer diffusion-based molecular nano communication system
title_short	Channel modeling of multilayer diffusion-based molecular nano communication system
title_full	Channel modeling of multilayer diffusion-based molecular nano communication system
title_fullStr	Channel modeling of multilayer diffusion-based molecular nano communication system
title_full_unstemmed	Channel modeling of multilayer diffusion-based molecular nano communication system
title_sort	channel modeling of multilayer diffusion-based molecular nano communication system
granting_institution	Universiti Teknologi Malaysia
granting_department	Faculty of Electrical Engineering
publishDate	2016
url	http://eprints.uthm.edu.my/893/1/24p%20SAIZALMURSIDI%20MD%20MUSTAM.pdf http://eprints.uthm.edu.my/893/2/SAIZALMURSIDI%20MD%20MUSTAM%20COPYRIGHT%20DECLARATION.pdf
_version_	1747830707915325440

Channel modeling of multilayer diffusion-based molecular nano communication system

Similar Items