Channel Model of Molecular Communication via Diffusion in a Vessel-like Environment Considering a Partially Covering Receiver

TL;DR

This paper models molecular communication channels in vessel-like environments with partially covering receivers, analyzing molecule distribution and proposing a new channel model validated by simulations.

Contribution

It introduces a novel channel model for partially covering receivers in vessel-like environments, considering molecule distribution and reflection mechanisms.

Findings

Molecules tend to distribute uniformly beyond a certain distance ratio.

The proposed channel model accurately predicts molecule distribution in vessel environments.

Elastic and rollback reflections have different impacts on molecule trajectories.

Abstract

By considering potential health problems that a fully covering receiver may cause in vessel-like environments, the implementation of a partially covering receiver is needed. To this end, distribution of hitting location of messenger molecules (MM) is analyzed within the context of molecular communication via diffusion with the aim of channel modeling. The distribution of these MMs for a fully covering receiver is analyzed in two parts: angular and radial dimensions. For the angular distribution analysis, the receiver is divided into 180 slices to analyze the mean, standard deviation, and coefficient of variation of these slices. For the axial distance distribution analysis, Kolmogorov- Smirnov test is applied for different significance levels. Also, two different implementations of the reflection from the vessel surface (i.e., rollback and elastic reflection) are compared and mathematical representation of elastic reflection is given. The results show that MMs have tendency to spread uniformly beyond a certain ratio of the distance to the vessel radius. By utilizing the uniformity, we propose a channel model for the partially covering receiver in vessel-like environments and validate the proposed model by simulations.