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Sparse channel estimation in OFDM systems by threshold-based pruning
J. Oliver, , K. M.Muraleedhara Prabhu
Published in
2008
Volume: 44
   
Issue: 13
Pages: 830 - 832
Abstract
A threshold-based procedure to estimate sparse channels in an orthogonal frequency division multiplexing (OFDM) system is proposed. An optimal threshold is derived by maximising the probability of correct detection between significant and zero-valued taps estimated by the least squares (LS) estimator. Improved LS estimates are obtained by pruning the LS estimates with the statistically derived threshold. © 2008 The Institution of Engineering and Technology.
About the journal
JournalElectronics Letters
ISSN00135194
Open AccessNo
Concepts (17)
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    Channel estimation
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    Computer networks
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    Curve fitting
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    ENGINEERING TECHNOLOGY
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    Frequency allocation
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    Frequency division multiplexing
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    Frequency estimation
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    Least squares approximations
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    Orthogonal frequency division multiplexing
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    Technology
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    (OTDR) TECHNOLOGY
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    LEAST SQUARES (LS)
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    OFDM SYSTEMS
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    Optimal threshold
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    ORTHOGONAL FREQUENCY-DIVISION MULTIPLEXING (OFDM)
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    SPARSE CHANNELS
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    Estimation