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CLC number: TN929.5;TN914
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Received: 2003-03-11
Revision Accepted: 2003-05-19
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A simple channel estimator for space-time coded OFDM systems in rapid fading channels
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SHAN Shu-wei, LUO Han-wen, SONG Wen-tao. A simple channel estimator for space-time coded OFDM systems in rapid fading channels[J]. Journal of Zhejiang University Science A, 2004, 5(1): 45-49.
@article{title="A simple channel estimator for space-time coded OFDM systems in rapid fading channels",
author="SHAN Shu-wei, LUO Han-wen, SONG Wen-tao",
journal="Journal of Zhejiang University Science A",
volume="5",
number="1",
pages="45-49",
year="2004",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2004.0045"
}
%0 Journal Article
%T A simple channel estimator for space-time coded OFDM systems in rapid fading channels
%A SHAN Shu-wei
%A LUO Han-wen
%A SONG Wen-tao
%J Journal of Zhejiang University SCIENCE A
%V 5
%N 1
%P 45-49
%@ 1869-1951
%D 2004
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2004.0045
TY - JOUR
T1 - A simple channel estimator for space-time coded OFDM systems in rapid fading channels
A1 - SHAN Shu-wei
A1 - LUO Han-wen
A1 - SONG Wen-tao
J0 - Journal of Zhejiang University Science A
VL - 5
IS - 1
SP - 45
EP - 49
%@ 1869-1951
Y1 - 2004
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2004.0045
Abstract: A simple channel estimator for space-time coded orthogonal frequency division multiplexing (OFDM) systems in rapid fading channels is proposed. The channels at the training bauds are estimated using the EM (expectation-maximization) algorithm, while the channels at the data bauds are estimated based on the method for modelling the time-varying channel as the linear combination of several time-invariant "doppler channels". Computer simulations showed that this estimator outperforms the decision-directed tracking in rapid fading channels and that the performance of this method can be improved by iteration.
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