CHEN Dong-hua. Carrier frequency offset estimation for OFDM in highly mobile channels[J]. Journal of Light Industry, 2012, 27(5): 99-102. doi: 10.3969/j.issn.2095-476X.2012.05.024
Citation:
CHEN Dong-hua. Carrier frequency offset estimation for OFDM in highly mobile channels[J]. Journal of Light Industry, 2012, 27(5): 99-102.
doi:
10.3969/j.issn.2095-476X.2012.05.024
Carrier frequency offset estimation for OFDM in highly mobile channels
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Received Date:
2012-07-10
Available Online:
2012-09-15
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Abstract
In order to improve the estimation performance of carrier frequency offset (CFO) for OFDM systems in time-varying channel,the short repetitive training sequences were inserted between any two OFDM symbols and then were used to estimate the CFO.The impact of time-varying channel on the estimation of CFO was thus reduced by decreasing the correlation interval.Simulation results showed that when the normalized Doppler frequency of time-varying channel was above 0.1,the short training sequence based method was superior in performance to the conventional cyclic prefix based one,especially so when the channel varies faster,and thus was more applicable in high mobility environments.
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Proportional views
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