Levenberg-Marquardt Method Based Cooperative Source Localization in SIMO Molecular Communication via Diffusion Systems

TL;DR

This paper introduces a cooperative source localization method for molecular communication systems using multiple receivers and the Levenberg-Marquardt algorithm, achieving accurate transmitter positioning in nano-networks.

Contribution

It proposes a novel localization approach combining empirical channel modeling with Levenberg-Marquardt optimization for molecular communication systems.

Findings

Accurately estimates transmitter location in short to medium ranges.

Uses empirical channel response due to lack of exact mathematical expression.

Demonstrates effectiveness through particle-based simulations.

Abstract

Molecular communication underpins nano-scale communications in nanotechnology. The combination of multinanomachines to form nano-networks is one of the main enabling methods. Due to the importance of source localization in establishing nano-networks, this paper proposes a cooperative source localization method for Molecular Communication via Diffusion (MCvD) systems using multiple spherical absorption receivers. Since there is no exact mathematical expression of the channel impulse response for multiple absorbing receivers, we adopt an empirical expression and use Levenberg-Marquardt method to estimate the distance of the transmitter to each receiver, based on which the location of the transmitter is obtained using an iterative scheme where the initial point is obtained using a multi-point localization method. Particle based simulation is carried out to evaluate the performance of the proposed method. Simulation results show that the proposed method can accurately estimate the location of transmitter in short to medium communication ranges.