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Simulator Development for Practical Molecular Communication Systems

Molecular communications (MC) is an emerging research field, which aims to enable communication in challenging environments, for example inside the human body for smart drug delivery. In contrast to conventional wireless communications, MC employs molecules for information transmission, which makes this approach highly bio-compatible and energy-efficient. Most research in recent years has focused on theoretical modeling, such as channel modelling or receiver design and analysis. Typically, particle-based simulations are used to verify the derived results. In such simulations, each solute molecule is tracked individually. The AcCoRD (Actor-based Communication via Reaction-Diffusion) simulator is a promising tool, which has been recently proposed for such type of simulations (see Fig. 1).

Unfortunately, many existing theoretical models have limited applicability in practical scenarios due to various simplifications. Thus, contemporary MC research aims at developing realistic models that properly reflect the characteristics of practical scenarios. Although the AcCoRD simulator can be configured for many different scenarios, there are practical relevant scenarios that are not integrated yet. This includes, for example, the molecule diffusion in a sphere with a time-variant semi-permeable wall and the diffusion in interconnected spheres. The former is important for modeling controlled drug release in smart drug delivery systems and the latter can be used to model the propagation of Ca2+-waves through neighboring cells.

The aim of this work is to integrate more realistic scenarios into the AcCoRD simulator. The main tasks are summarized below and will be adapted as needed

Tasks:

  • Getting familiar with the AcCoRD simulator
  • Integration of space- and time-variant permeability in spherical objects
  • Integration of the interconnection of spherical objects

Further Reading:

  • https://warwick.ac.uk/fac/sci/eng/staff/ajgn/software/accord/ (simulator)
  • https://arxiv.org/abs/1612.00485 (simulator documentation)

This research project is carried out in cooperation with the Institute for Communications Engineering and RF-Systems at the Johannes Kepler University in Linz, Austria (JKU).

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