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".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Nesta carta, é proposto um novo algoritmo cego de estimativa de frequência Doppler máxima para sistemas baseados em OFDM. Utilizamos apenas parte das subportadoras que são moduladas por modulação de envelope constante, como QPSK. A magnitude recebida destas subportadoras é obtida e sua densidade espectral de potência (PSD) é estimada pelo método clássico do periodograma. A frequência Doppler máxima é derivada encontrando o ponto limite do PSD. Diferente do método PSD convencional, nosso método não necessita de estimativas de canal, a precisão da estimativa também é aumentada. Os resultados da simulação mostram que o desempenho do nosso método é bom para uma ampla gama de valores de spread Doppler.
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Yi WANG, Li Hua LI, Ping ZHANG, Ze Min LIU, Ping WU, "Blind Maximum Doppler Frequency Estimation for OFDM Based Communication Systems" in IEICE TRANSACTIONS on Communications,
vol. E92-B, no. 6, pp. 2295-2297, June 2009, doi: 10.1587/transcom.E92.B.2295.
Abstract: In this letter, a novel blind maximum Doppler frequency estimation algorithm for OFDM based systems is proposed. We only utilize part of the subcarriers which are modulated by constant-envelope modulation such as QPSK. The received magnitude of these subcarriers is obtained and its power spectral density (PSD) is estimated by classic periodogram method. The maximum Doppler frequency is derived by finding the edge point of PSD. Different from the conventional PSD method, our method does not need the channel estimates, the estimation precision is also increased. Simulation results show that the performance of our method is good for a wide range of Doppler spread values.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E92.B.2295/_p
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@ARTICLE{e92-b_6_2295,
author={Yi WANG, Li Hua LI, Ping ZHANG, Ze Min LIU, Ping WU, },
journal={IEICE TRANSACTIONS on Communications},
title={Blind Maximum Doppler Frequency Estimation for OFDM Based Communication Systems},
year={2009},
volume={E92-B},
number={6},
pages={2295-2297},
abstract={In this letter, a novel blind maximum Doppler frequency estimation algorithm for OFDM based systems is proposed. We only utilize part of the subcarriers which are modulated by constant-envelope modulation such as QPSK. The received magnitude of these subcarriers is obtained and its power spectral density (PSD) is estimated by classic periodogram method. The maximum Doppler frequency is derived by finding the edge point of PSD. Different from the conventional PSD method, our method does not need the channel estimates, the estimation precision is also increased. Simulation results show that the performance of our method is good for a wide range of Doppler spread values.},
keywords={},
doi={10.1587/transcom.E92.B.2295},
ISSN={1745-1345},
month={June},}
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TY - JOUR
TI - Blind Maximum Doppler Frequency Estimation for OFDM Based Communication Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 2295
EP - 2297
AU - Yi WANG
AU - Li Hua LI
AU - Ping ZHANG
AU - Ze Min LIU
AU - Ping WU
PY - 2009
DO - 10.1587/transcom.E92.B.2295
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E92-B
IS - 6
JA - IEICE TRANSACTIONS on Communications
Y1 - June 2009
AB - In this letter, a novel blind maximum Doppler frequency estimation algorithm for OFDM based systems is proposed. We only utilize part of the subcarriers which are modulated by constant-envelope modulation such as QPSK. The received magnitude of these subcarriers is obtained and its power spectral density (PSD) is estimated by classic periodogram method. The maximum Doppler frequency is derived by finding the edge point of PSD. Different from the conventional PSD method, our method does not need the channel estimates, the estimation precision is also increased. Simulation results show that the performance of our method is good for a wide range of Doppler spread values.
ER -