title: The dependence of signal-to-noise ratio on number of scans in covariance spectroscopy.
abstract: The dependence of signal-to-noise ratio on the number of scans in covariance spectroscopy has been systematically analyzed for the first time with the intriguing relationship of SNRcov∝n/2, which is different from that in FT2D spectrum with SNRFT∝n. This relationship guarantees the signal-to-noise ratio when increasing the number of scans.
authors.affiliation: Physics Department & Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Qian
authors.affiliation: Physics Department & Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Shen
authors.affiliation: Physics Department & Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, China; Unit of Catalysis and Chemistry of Solids (UCCS), CNRS-8181, University Lille North of France, 59652 Villeneuve d׳Ascq, France.
authors.forename: Jean-Paul
authors.initials: JP
authors.lastname: Amoureux
authors.affiliation: Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA.
authors.forename: Isao
authors.initials: I
authors.lastname: Noda
authors.affiliation: Physics Department & Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai 200062, China. Electronic address: bwhu@phy.ecnu.edu.cn.
authors.forename: Bingwen
authors.initials: B
authors.lastname: Hu
keywords: Covariance; Homo-nuclear correlation; Signal-to-noise ratio; Solid-state NMR