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The design and performance analysis of diffusive molecular communication systems

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Wang, Xiayang (2016) The design and performance analysis of diffusive molecular communication systems. PhD thesis, University of Warwick.

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Official URL: http://webcat.warwick.ac.uk/record=b2870755~S1

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Abstract

Molecular Communications (MC) is an increasingly attractive technique to enable the networking of nano-machines by utilising molecules as the information carrier. The molecular diffusion can be described by either the movement of individual molecules or the molecular concentration. Accordingly, two kinds of diffusive MC systems have been modelled in previous literature. On the basis of these studies, the aim of this Ph.D. is to refine these two models, to implement functional transmission techniques and technologies, and to investigate the corresponding system performance. To fulfil this target, the whole Ph.D. is divided into two stages. During each stage, specific tasks have been accomplished, each contributing to the overarching research field of diffusive MC systems.

In the first stage, an MC system model, named as the Model-I, is established and enhanced by focusing on the motion of individual molecules. The performance has been evaluated by both deriving mathematical expressions and implementing MATLAB simulations. Based on the Model-I, a distance estimation scheme has been proposed. Compared with existing methods, this new scheme is more accurate and less time-consuming. Moreover, five Stop-and-Wait Automatic Repeat reQuest (SW-AQR) protocols have been implemented on the Model-I. Results reveal that all these SW-ARQ schemes work well and can be beneficial under different circumstances.

In the second stage, another MC system model, named as the Model-II, is established and refined with information conveyed by the molecular concentration. Both theoretical derivations and MATLAB simulations are provided to analyse the system reliability. Laid on this foundation, two distance measurement methods have been proposed and shown to be suitable for the Model-II. Additionally, to solve the long-range MC problem, relaying schemes have been applied by deploying a relay node between the source and target nano-machines. The performance improvement of each scheme is also illustrated respectively.

Item Type: Thesis (PhD)
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Library of Congress Subject Headings (LCSH): Molecular communication (Telecommunication)
Official Date: January 2016
Dates:
DateEvent
January 2016Submitted
Institution: University of Warwick
Theses Department: School of Engineering
Thesis Type: PhD
Publication Status: Unpublished
Supervisor(s)/Advisor: Higgins, Matthew D. ; Leeson, Mark S.
Extent: xvi, 142 leaves : charts
Language: eng

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