Molecular Channel Fading Due to Diffusivity Fluctuations

Song Qiu, Taufiq Asyhari, Weisi Guo, Siyi Wang, Bin Li, Chenglin Zhao, Mark Leeson

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Molecular communications via diffusion is sensitive to environmental changes, such as the diffusion coefficient (mass diffusivity). The diffusivity is directly related to a number of parameters, including the ambient temperature, which varies slowly over time. While molecular noise models have received significant attention, channel fading has not been extensively considered. Using experimental data, we show that the ambient temperature varies approximately according to a normal distribution. As a result, we analytically derive the fading distribution and validate it using numerical simulations. We further derive the joint distribution of the channel gain and the additive noise, and examine the impact of such interactions on the ISI distribution, which is shown to conform to a generalized extreme value distribution.

Original languageEnglish
Article number7762764
Pages (from-to)676-679
Number of pages4
JournalIEEE Communications Letters
Volume21
Issue number3
DOIs
Publication statusPublished - 1 Mar 2017

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Keywords

  • Channel model
  • interference
  • molecular communication

ASJC Scopus subject areas

  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

Cite this

Qiu, S., Asyhari, T., Guo, W., Wang, S., Li, B., Zhao, C., & Leeson, M. (2017). Molecular Channel Fading Due to Diffusivity Fluctuations. IEEE Communications Letters, 21(3), 676-679. [7762764]. https://doi.org/10.1109/LCOMM.2016.2633988