Spherical Diffusion Model with Semi-Permeable Boundary: A Transfer Function Approach

The derivation of suitable analytical models is an important step for the design and analysis of molecular communication systems. However, many existing models have limited applicability in practical scenarios due to various simplifications (e.g., assumption of an unbounded environment). In this pap...

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Main Authors: Schafer, Maximilian, Wicke, Wayan, Haselmayr, Wetner, Rabenstein, Rudolf, Schober, Robert
Format: Conference Proceeding
Language:English
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Analytical models
Eigenvalues and eigenfunctions
Ions
Mathematical model
Numerical models
Transfer functions
Transforms
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Wicke, Wayan
Haselmayr, Wetner
Rabenstein, Rudolf
Schober, Robert
description The derivation of suitable analytical models is an important step for the design and analysis of molecular communication systems. However, many existing models have limited applicability in practical scenarios due to various simplifications (e.g., assumption of an unbounded environment). In this paper, we develop a realistic model for particle diffusion in a bounded sphere and particle transport through a semi-permeable boundary. This model can be used for various applications, such as modeling of inter-/intra-cell communication or the release process of drug carriers. The proposed analytical model is based on a transfer function approach, which allows for fast numerical evaluation and provides insights into the impact of the relevant molecular communication system parameters. The proposed solution of the bounded spherical diffusion problem is formulated in terms of a state-space description and the semi-permeable boundary is accounted for by a feedback loop. Particle-based simulations verify the proposed modeling approach.
doi_str_mv 10.1109/ICC40277.2020.9149441
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subjects Analytical models
Eigenvalues and eigenfunctions
Ions
Mathematical model
Numerical models
Transfer functions
Transforms
title Spherical Diffusion Model with Semi-Permeable Boundary: A Transfer Function Approach
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