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Active elimination of radio frequency interference for improved signal-to-noise ratio for in-situ NMR experiments in strong magnetic field gradients

Ibrahim, Mona, Pardi, C, Brown, Tim and McDonald, Peter (2018) Active elimination of radio frequency interference for improved signal-to-noise ratio for in-situ NMR experiments in strong magnetic field gradients Journal of Magnetic Resonance, 287. pp. 99-109.

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Abstract

Improvement in the signal-to-noise ratio of Nuclear Magnetic Resonance (NMR) systems may be achieved either by increasing the signal amplitude or by decreasing the noise. The noise has multiple origins – not all of which are strictly “noise”: incoherent thermal noise originating in the probe and pre-amplifiers, probe ring down or acoustic noise and coherent externally broadcast radio frequency transmissions. The last cannot always be shielded in open access experiments. In this paper, we show that pulsed, low radio-frequency data communications are a significant source of broadcast interference. We explore two signal processing methods of de-noising short

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
NameEmailORCID
Ibrahim, Monamona.Ibrahim@surrey.ac.ukUNSPECIFIED
Pardi, CUNSPECIFIEDUNSPECIFIED
Brown, TimT.Brown@surrey.ac.ukUNSPECIFIED
McDonald, PeterP.Mcdonald@surrey.ac.ukUNSPECIFIED
Date : 7 January 2018
Funders : EPSRC
Identification Number : 10.1016/j.jmr.2018.01.002
Copyright Disclaimer : © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords : NMR, signal-processing, linear-predictive-coding, discrete-wavelet-transform, de-noising
Depositing User : Melanie Hughes
Date Deposited : 09 Jan 2018 11:26
Last Modified : 31 Jan 2018 12:02
URI: http://epubs.surrey.ac.uk/id/eprint/845567

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