@MASTERSTHESIS\{IMM2007-05405,
    author       = "M. S. Akram",
    title        = "Pilot-based Channel Estimation in {OFDM} Systems",
    year         = "2007",
    school       = "Informatics and Mathematical Modelling, Technical University of Denmark, {DTU}",
    address      = "Richard Petersens Plads, Building 321, {DK-}2800 Kgs. Lyngby",
    type         = "",
    note         = "Supervised by Assoc. Prof. Ole Winther, {IMM,} {DTU}.",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/5405-full.html",
    abstract     = "The channel estimation techniques for pilot-based {OFDM} systems are investigated. The channel estimation is studied for different pilot densities ({2,} {4,} {6,} and 10) in frequency-domain and fixed pilot allocation in temporal-domain for low delay spread and high delay spread channels. The estimation of channel in frequency-domain is based on interpolation, polynomial-based generalized linear model (or least-squares method) and Wiener filtering (or Linear Minimum Mean Square Error) methods. The estimation of channel in temporal-domain is done using linear interpolation. We have compared the performance of all these schemes by measuring raw bit-error-rate with {QPSK} modulation on Rayleigh fading channel based on Clarks scattering model."
}