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
시간 영역에서 반복적인 동기화 시퀀스를 사용하여 CFO(캐리어 주파수 오프셋)를 추정할 수 있습니다. 본 논문에서는 주파수 선택 채널에서 CFO의 UGML(Un-Guarded Maximum Likelihood) 추정기와 GML(Guarded ML) 추정기를 제안합니다. 이론적 분석 결과, UGML 추정기는 채널 응답을 알 수 없는 경우 구현하기 어려운 반면, GML 추정기는 삽입된 가드 시퀀스로 인해 쉽게 구현될 수 있음을 보여줍니다. 가드 시퀀스는 OFDM 시스템에서 CP(Cyclic Prefix)로 쉽게 구현될 수 있습니다. 따라서 UGML 추정기는 채널 응답이 미리 결정될 수 있는 시스템에만 적합합니다. 본 논문에서는 기존 CFO 추정기와의 비교도 제공합니다. 이론적 및 시뮬레이션 결과는 제안된 추정기 모두 기존 추정기보다 성능이 우수하다는 것을 보여줍니다.
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부
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
부
@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},}
부
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 -