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 journalArticlepeer-review

    8 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

    Keywords

    • Channel model
    • interference
    • molecular communication

    ASJC Scopus subject areas

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

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