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OFDM channel estimation by singular value decomposition
Luleå tekniska universitet.
Luleå tekniska universitet.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
Luleå tekniska universitet.
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1996 (English)Report (Other academic)
Abstract [en]

In this report we present and analyse low-rank channel estimators for orthogonal frequency-division multiplexing (OFDM) using the frequency correlation of the channel. Low-rank approximations based on the discrete Fourier transform (DFT) have been proposed but they suffer from poor performance when the channel is not sample-spaced. We apply the theory of optimal rank-reduction to linear minimum mean-squared error (LMMSE) estimators and show that these estimators, when using a fixed design, are robust to changes in channel correlation and signal-to-noise ratio (SNR). The performance is presented in terms of uncoded symbol-error rate (SER) for a system using 16-QAM.

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 1996. , 26 p.
Research report / Luleå University of Technology1 jan 1974 → 31 dec 1996, ISSN 0347-0881 ; 1996:18
Research subject
Signal Processing
URN: urn:nbn:se:ltu:diva-24711Local ID: c2790b30-df07-11dc-99e3-000ea68e967bOAI: diva2:997763
Godkänd; 1996; 20080219 (ysko)Available from: 2016-09-29 Created: 2016-09-29Bibliographically approved

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