The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Des séquences de synchronisation répétitives dans le domaine temporel peuvent être utilisées pour estimer le décalage de fréquence porteuse (CFO). L'estimateur Un-Guarded Maximum Likelihood (UGML) et l'estimateur Guarded ML (GML) du CFO dans le canal sélectif en fréquence sont proposés dans cet article. Les résultats de l'analyse théorique montrent que l'estimateur UGML est difficile à mettre en œuvre si la réponse du canal n'est pas connue, tandis que l'estimateur GML peut être facilement implémenté en raison de l'insertion de séquences de garde. Les séquences de garde peuvent être facilement implémentées sous forme de préfixe cyclique (CP) dans le système OFDM. Par conséquent, l’estimateur UGML ne convient qu’aux systèmes où la réponse du canal peut être prédéterminée. Cet article donne également une comparaison avec l’estimateur CFO existant. Les résultats théoriques et de simulation montrent que les deux estimateurs proposés surpassent l'estimateur existant.
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Yinsheng LIU, Zhenhui TAN, Bo AI, "Frequency Offset Estimation for OFDM in Frequency Selective Channel Using Repetitive Sequence" in IEICE TRANSACTIONS on Communications,
vol. E94-B, no. 4, pp. 1033-1042, April 2011, doi: 10.1587/transcom.E94.B.1033.
Abstract: Repetitive synchronization sequences in the time domain can be used to estimate Carrier Frequency Offset (CFO). The Un-Guarded Maximum Likelihood (UGML) estimator and Guarded ML (GML) estimator of CFO in the frequency selective channel are proposed in this paper. The results of theoretical analysis show that the UGML estimator is hard to implement if the channel response is not known while the GML estimator can be easily implemented due to inserted guard sequences. The guard sequences can be easily implemented as Cyclic Prefix (CP) in OFDM system. Therefore, the UGML estimator is only suitable for the systems where the channel response can be predetermined. This paper also gives a comparison with the existing CFO estimator. Theoretical and simulation results show that both the proposed estimators outperform the existing estimator.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E94.B.1033/_p
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@ARTICLE{e94-b_4_1033,
author={Yinsheng LIU, Zhenhui TAN, Bo AI, },
journal={IEICE TRANSACTIONS on Communications},
title={Frequency Offset Estimation for OFDM in Frequency Selective Channel Using Repetitive Sequence},
year={2011},
volume={E94-B},
number={4},
pages={1033-1042},
abstract={Repetitive synchronization sequences in the time domain can be used to estimate Carrier Frequency Offset (CFO). The Un-Guarded Maximum Likelihood (UGML) estimator and Guarded ML (GML) estimator of CFO in the frequency selective channel are proposed in this paper. The results of theoretical analysis show that the UGML estimator is hard to implement if the channel response is not known while the GML estimator can be easily implemented due to inserted guard sequences. The guard sequences can be easily implemented as Cyclic Prefix (CP) in OFDM system. Therefore, the UGML estimator is only suitable for the systems where the channel response can be predetermined. This paper also gives a comparison with the existing CFO estimator. Theoretical and simulation results show that both the proposed estimators outperform the existing estimator.},
keywords={},
doi={10.1587/transcom.E94.B.1033},
ISSN={1745-1345},
month={April},}
Copier
TY - JOUR
TI - Frequency Offset Estimation for OFDM in Frequency Selective Channel Using Repetitive Sequence
T2 - IEICE TRANSACTIONS on Communications
SP - 1033
EP - 1042
AU - Yinsheng LIU
AU - Zhenhui TAN
AU - Bo AI
PY - 2011
DO - 10.1587/transcom.E94.B.1033
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E94-B
IS - 4
JA - IEICE TRANSACTIONS on Communications
Y1 - April 2011
AB - Repetitive synchronization sequences in the time domain can be used to estimate Carrier Frequency Offset (CFO). The Un-Guarded Maximum Likelihood (UGML) estimator and Guarded ML (GML) estimator of CFO in the frequency selective channel are proposed in this paper. The results of theoretical analysis show that the UGML estimator is hard to implement if the channel response is not known while the GML estimator can be easily implemented due to inserted guard sequences. The guard sequences can be easily implemented as Cyclic Prefix (CP) in OFDM system. Therefore, the UGML estimator is only suitable for the systems where the channel response can be predetermined. This paper also gives a comparison with the existing CFO estimator. Theoretical and simulation results show that both the proposed estimators outperform the existing estimator.
ER -