Based on the expectation-maximization (EM) algorithm, an iterative time-domain channel estimation approach capable of using a priori information is proposed for orthogonal frequency division multiplexing (OFDM) systems in this letter: it outperforms its noniterative counterpart in terms of estimation accuracy as well as bit error rate (BER) performance. Numerical simulations demonstrate that an SNR gain of 1 dB at BER=10-4 with only one iteration and estimation mean square error (MSE) which nearly coincides with the Cramer-Rao bound (CRB) in the low SNR region can be obtained, thanks to the efficient use of a priori information.
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Feng YANG, Yu ZHANG, Jian SONG, Changyong PAN, Zhixing YANG, "An EM-Based Time-Domain Channel Estimation Algorithm Using a priori Information" in IEICE TRANSACTIONS on Communications,
vol. E91-B, no. 9, pp. 3041-3044, September 2008, doi: 10.1093/ietcom/e91-b.9.3041.
Abstract: Based on the expectation-maximization (EM) algorithm, an iterative time-domain channel estimation approach capable of using a priori information is proposed for orthogonal frequency division multiplexing (OFDM) systems in this letter: it outperforms its noniterative counterpart in terms of estimation accuracy as well as bit error rate (BER) performance. Numerical simulations demonstrate that an SNR gain of 1 dB at BER=10-4 with only one iteration and estimation mean square error (MSE) which nearly coincides with the Cramer-Rao bound (CRB) in the low SNR region can be obtained, thanks to the efficient use of a priori information.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e91-b.9.3041/_p
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@ARTICLE{e91-b_9_3041,
author={Feng YANG, Yu ZHANG, Jian SONG, Changyong PAN, Zhixing YANG, },
journal={IEICE TRANSACTIONS on Communications},
title={An EM-Based Time-Domain Channel Estimation Algorithm Using a priori Information},
year={2008},
volume={E91-B},
number={9},
pages={3041-3044},
abstract={Based on the expectation-maximization (EM) algorithm, an iterative time-domain channel estimation approach capable of using a priori information is proposed for orthogonal frequency division multiplexing (OFDM) systems in this letter: it outperforms its noniterative counterpart in terms of estimation accuracy as well as bit error rate (BER) performance. Numerical simulations demonstrate that an SNR gain of 1 dB at BER=10-4 with only one iteration and estimation mean square error (MSE) which nearly coincides with the Cramer-Rao bound (CRB) in the low SNR region can be obtained, thanks to the efficient use of a priori information.},
keywords={},
doi={10.1093/ietcom/e91-b.9.3041},
ISSN={1745-1345},
month={September},}
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TY - JOUR
TI - An EM-Based Time-Domain Channel Estimation Algorithm Using a priori Information
T2 - IEICE TRANSACTIONS on Communications
SP - 3041
EP - 3044
AU - Feng YANG
AU - Yu ZHANG
AU - Jian SONG
AU - Changyong PAN
AU - Zhixing YANG
PY - 2008
DO - 10.1093/ietcom/e91-b.9.3041
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E91-B
IS - 9
JA - IEICE TRANSACTIONS on Communications
Y1 - September 2008
AB - Based on the expectation-maximization (EM) algorithm, an iterative time-domain channel estimation approach capable of using a priori information is proposed for orthogonal frequency division multiplexing (OFDM) systems in this letter: it outperforms its noniterative counterpart in terms of estimation accuracy as well as bit error rate (BER) performance. Numerical simulations demonstrate that an SNR gain of 1 dB at BER=10-4 with only one iteration and estimation mean square error (MSE) which nearly coincides with the Cramer-Rao bound (CRB) in the low SNR region can be obtained, thanks to the efficient use of a priori information.
ER -