Frequency domain analysis and equalization for molecular communication

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dc.contributor.authorHuang, Yu
dc.contributor.authorJi, Fei
dc.contributor.authorWei, Zhuangkun
dc.contributor.authorWen, Miaowen
dc.contributor.authorChen, Xuan
dc.contributor.authorTang, Yuankun
dc.contributor.authorGuo, Weisi
dc.date.accessioned2021-03-26T09:51:12Z
dc.date.available2021-03-26T09:51:12Z
dc.date.issued2021-03-17
dc.description.abstractMolecular Communication (MC) is a promising micro-scale technology that enables wireless connectivity in electromagnetically challenged conditions. The signal processing approaches in MC are different from conventional wireless communications as molecular signals suffer from severe inter-symbol interference (ISI) and signal-dependent counting noise due to the stochastic diffusion process of the information molecules. One of the main challenges in MC is the high computational complexity of the existing time-domain ISI mitigation schemes that display a third-order polynomial or even exponential growth with the ISI length, which is further exasperated under the high symbol rate case. For the first time, we develop a frequency-domain equalization (FDE) with lower complexity, capable of achieving independence from the ISI effects. This innovation is grounded in our characterization of the channel frequency response of diffusion signals, facilitating the design of receiver sampling strategies. However, the perfect counting noise power is unavailable in the optimal minimum mean square error (MMSE) equalizer. We address this issue by exploiting the statistical information of the transmit signal and decision feedback for noise power estimation, designing novel MMSE equalizers with low complexity. The FDE for MC is successfully developed with its immunity to ISI effects, and its signal processing cost has only a logarithmic growth with symbol length in each block.en_UK
dc.identifier.citationHuang Y, Ji F, Wei Z, et al., (2021) Frequency domain analysis and equalization for molecular communication. IEEE Transactions on Signal Processing, Volume 69, pp. 1952 - 1967en_UK
dc.identifier.issn1053-587X
dc.identifier.urihttps://doi.org/10.1109/TSP.2021.3066069
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/16509
dc.language.isoenen_UK
dc.publisherIEEEen_UK
dc.rightsAttribution-NonCommercial 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/*
dc.subjectmolecular communicationen_UK
dc.subjectfrequency responseen_UK
dc.subjectsamplingen_UK
dc.subjectfrequency domain equalizationen_UK
dc.subjectsignal-dependent noiseen_UK
dc.titleFrequency domain analysis and equalization for molecular communicationen_UK
dc.typeArticleen_UK

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