A Unifying Model for External Noise Sources and ISI in Diffusive Molecular Communication
Abstract
This paper considers the impact of external noise sources, including interfering transmitters, on a diffusive molecular communication system, where the impact is measured as the number of noise molecules expected to be observed at a passive receiver. A unifying model for noise, multiuser interference, and intersymbol interference is presented, where, under certain circumstances, interference can be approximated as a noise source that is emitting continuously. The model includes the presence of advection and molecule degradation. The time-varying and asymptotic impact is derived for a series of special cases, some of which facilitate closed-form solutions. Simulation results show the accuracy of the expressions derived for the impact of a continuously-emitting noise source, and show how approximating intersymbol interference as a noise source can simplify the calculation of the expected bit error probability of a weighted sum detector.
Cite
@article{arxiv.1310.5930,
title = {A Unifying Model for External Noise Sources and ISI in Diffusive Molecular Communication},
author = {Adam Noel and Karen C. Cheung and Robert Schober},
journal= {arXiv preprint arXiv:1310.5930},
year = {2015}
}
Comments
14 pages, 7 figures, 4 tables, 1 appendix. To appear in IEEE Journal on Selected Areas in Communications (JSAC). Submitted October 21, 2013, revised April 21, 2014, accepted June 3, 2014