Correlated Source Achievable Information Rate Analysis in Diffusive Channels with Memory

Vakilipoor Takaloo F, Barletta L, Bregni S, Magarini M (2024)

Publication Type: Conference contribution

Publication year: 2024

Publisher: Institute of Electrical and Electronics Engineers Inc.

Conference Proceedings Title: 2024 IEEE Latin-American Conference on Communications, LATINCOM 2024 - Proceedings

Event location: Medellin CO

ISBN: 9798331521110

DOI: 10.1109/LATINCOM62985.2024.10770672

Abstract

This paper explores the Achievable Information Rate (AIR) of a diffusive Molecular Communication (MC) channel. We consider a fully absorbing receiver that counts the absorbed particles during each symbol time interval (STI) and uses a binary concentration shift keying modulation. The diffusive MC channel experiences inter-symbol interference (ISI) due to the information particles' delayed arrival. We quantify the channel's memory as an integer multiple of the STI. Under a Gaussian approximation of the channel law, we maximize the mutual information at the output of a detector threshold. Two distinct scenarios are considered for the source symbols: (i) independent and (ii) correlated via a first-order Markov process. It is demonstrated that employing a correlated source enables attaining higher constrained capacity (CC). The results indicate that the CC-achieving input distribution is not necessarily uniform. Notably, for short STI (or strong ISI), the maximum AIR is not achieved through equiprobable symbol transmission.

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. (2024). Correlated Source Achievable Information Rate Analysis in Diffusive Channels with Memory. In Sergio Armando Gutierrez (Eds.), 2024 IEEE Latin-American Conference on Communications, LATINCOM 2024 - Proceedings. Medellin, CO: Institute of Electrical and Electronics Engineers Inc..

MLA:

Vakilipoor Takaloo, Fardad, et al. "Correlated Source Achievable Information Rate Analysis in Diffusive Channels with Memory." Proceedings of the 2024 IEEE Latin-American Conference on Communications, LATINCOM 2024, Medellin Ed. Sergio Armando Gutierrez, Institute of Electrical and Electronics Engineers Inc., 2024.

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