Using Spatial Partitioning to Reduce the Bit Error Rate of Diffusion-Based Molecular Communications

Riaz, Muhammad Usman and Hamdan, Awan and Chou, Chun Tung (2020) Using Spatial Partitioning to Reduce the Bit Error Rate of Diffusion-Based Molecular Communications. IEEE Transactions on Communications, 68 (4). pp. 2204-2220. ISSN 0090-6778

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Abstract

This work builds on our earlier work on designing demodulators for diffusion-based molecular communications using a Markovian approach. The demodulation filters take the form of an ordinary differential equation (ODE) which computes the log-posteriori probability of observing a transmission symbol given the continuous history of receptor activities. A limitation of our earlier work is that the receiver is assumed to be a small cubic volume called a voxel. In this work, we extend the maximum a-posteriori demodulation to the case where the receiver may consist of multiple voxels and derive the ODE for log-posteriori probability calculation. This extension allows us to study receiver behaviour of different volumes and shapes. In particular, it also allows us to consider spatially partitioned receivers where the chemicals in the receiver are not allowed to mix. The key result of this paper is that spatial partitioning can be used to reduce bit-error rate in diffusion-based molecular communications.

Item Type:	Article
Additional Information:	Funding Information: Manuscript received April 2, 2019; revised August 30, 2019 and December 16, 2019; accepted January 19, 2020. Date of publication January 27, 2020; date of current version April 16, 2020. M. U. Riaz is supported by a PhD scholarship from the Punjab Education Endowment Fund, Pakistan. The associate editor coordinating the review of this article and approving it for publication was Y. Deng. (Corresponding author: Muhammad Usman Riaz.) Muhammad Usman Riaz and Chun Tung Chou are with the School of Computer Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia (e-mail: usmanriaz@cse.unsw.edu.au; c.t.chou@unsw.edu.au). Publisher Copyright: © 1972-2012 IEEE.
Uncontrolled Keywords:	/dk/atira/pure/subjectarea/asjc/2200/2208
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Depositing User:	Admin SSL
Date Deposited:	19 Oct 2022 23:07
Last Modified:	27 Jul 2023 22:25
URI:	http://repository-testing.wit.ie/id/eprint/4188

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