A New Simulation Algorithm for Absorbing Receiver in Molecular Communication

TL;DR

This paper introduces a new a priori Monte Carlo algorithm that efficiently simulates molecule absorption in diffusion-based molecular communication systems, especially for larger time steps, improving accuracy and computational efficiency.

Contribution

The paper presents a novel APMC algorithm that outperforms existing methods by accurately simulating molecule absorption with larger time steps in molecular communication.

Findings

APMC achieves higher simulation efficiency.

APMC accurately matches analytical absorption fractions.

APMC outperforms RMC for larger time steps.

Abstract

The simulation of diffusion-based molecular communication systems with absorbing receivers often requires a high computational complexity to produce accurate results. In this work, a new a priori Monte Carlo (APMC) algorithm is proposed to precisely simulate the molecules absorbed at a spherical receiver when the simulation time step length is relatively large. This algorithm addresses the limitations of the current refined Monte Carlo (RMC) algorithm, since the RMC algorithm provides accurate simulation only for a relatively small time step length. The APMC algorithm is demonstrated to achieve a higher simulation efficiency than the existing algorithms by finding that the APMC algorithm, for a relatively large time step length, absorbs the fraction of molecules expected by analysis, while other algorithms do not.