Performance Limits of Spatially Distributed Molecular Communications With Receiver Saturation

Molecular via diffusion are affected by unreliability and inter symbol interference in case of single transmitter. A promising solution to these issues appears to be the adoption of a swarm of randomly distributed transmitting nano-devices and a single spherical receiver. However, such a perspective...

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Bibliographic Details
Published in:IEEE transactions on molecular, biological, and multi-scale communications biological, and multi-scale communications, 2023-03, Vol.9 (1), p.94-99
Main Authors: Zabini, Flavio, Masini, Barbara Mavi
Format: Article
Language:English
Subjects:
asynchronous transmission
Chemicals
diffusion
Diffusion coefficient
Interference
Molecular communication (telecommunication)
Molecular communications
Nanotechnology devices
point processes
Receivers
spatiotemporal model
Stochastic models
Symbols
Time-domain analysis
Transmitters
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Summary:Molecular via diffusion are affected by unreliability and inter symbol interference in case of single transmitter. A promising solution to these issues appears to be the adoption of a swarm of randomly distributed transmitting nano-devices and a single spherical receiver. However, such a perspective assumes the receiver as fully absorbing (i.e., able to absorb an unlimited number of molecules per second). In this letter, we show that, if this assumption is relaxed, increasing the number of point transmitters leads to a saturation effect which makes communication impossible when digital transmission is considered. By means of a first and second order spatio-temporal stochastic model, we analytically derive the maximum allowed point transmitters density before saturation arises, as a function of parameters such as the diffusion coefficient, the maximum number of absorbed molecules, and the number of previously transmitted symbols. The analysis is validated via Monte Carlo simulation.
ISSN:2372-2061
2372-2061
DOI:10.1109/TMBMC.2022.3225740