Achievable Rate Analysis in Diffusive Molecular Communication Channels with Memory

Vakilipoor Takaloo F, Barletta L, Bregni S, Magarini M (2023)

Publication Type: Conference contribution

Publication year: 2023

Publisher: Institute of Electrical and Electronics Engineers Inc.

Conference Proceedings Title: Proceedings - 2023 IEEE Latin-American Conference on Communications, LATINCOM 2023

Event location: Panama City PA

ISBN: 9798350326871

DOI: 10.1109/LATINCOM59467.2023.10361887

Abstract

In this paper, we investigate the achievable rate of a diffusive Molecular Communication (MC) channel with a fully absorbing (FA) receiver. The FA receiver counts the number of particles absorbed along each symbol interval and resets the counter at every interval. The MC channel is affected by a memory effect due to the delayed arrival of molecules, and therefore inter-symbol interference (ISI) arises. To quantify ISI we provide a measure of the effective channel memory, which is given in terms of integer number of symbol intervals. Thus, in our model the effect of released particles remains effective for a limited number of symbol intervals. The channel includes a single-sample memoryless detector, which is the most simple and common form of detector. We optimize the detector threshold to maximize the mutual information (MI), approximate as Gaussian the received signal distribution, and calculate the MI affected by ISI, in the case of binary concentration shift keying modulation. Our results demonstrate that, in general, the optimal input probability distribution that maximizes the achievable rate may not be uniform. In particular, when the symbol interval is small (strong ISI), the maximum achievable rate does not occur with equiprobable transmission of symbols.

Authors with CRIS profile

Fardad Vakilipoor Takaloo Lehrstuhl für Digitale Übertragung (IDC)

Involved external institutions

Politecnico di Milano IT Italy (IT)

How to cite

APA:

Vakilipoor Takaloo, F., Barletta, L., Bregni, S., & Magarini, M. (2023). Achievable Rate Analysis in Diffusive Molecular Communication Channels with Memory. In Ramiro Velazquez (Eds.), Proceedings - 2023 IEEE Latin-American Conference on Communications, LATINCOM 2023. Panama City, PA: Institute of Electrical and Electronics Engineers Inc..

MLA:

Vakilipoor Takaloo, Fardad, et al. "Achievable Rate Analysis in Diffusive Molecular Communication Channels with Memory." Proceedings of the 2023 IEEE Latin-American Conference on Communications, LATINCOM 2023, Panama City Ed. Ramiro Velazquez, Institute of Electrical and Electronics Engineers Inc., 2023.

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