Abstract
This paper proposes a fully-blind frequency offset, symbol timing and symbol period estimator for OFDM signals in fading channels. In OFDM system, each symbol is extended with a guard interval, which is the tail of the signal itself, therefore, we can deal with it as “an unknown pilot signal.” The estimation method is based on the maximum likelihood criterion, making effective use of the unknown pilot signal. This paper also proposes a blind subcarrier recovery method which calculates frequency transfer function essential for subcarrier recovery from the correlation matrix of the unknown pilot signals.
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References
M. Okada, M. Mouri, S. Hara, S. Komaki and N. Morinaga, “A Maximum Likelihood Symbol Timing, Symbol Period and Frequency Offset Estimator for Orthogonal Multi-Carrier Modulation Signals,” Proc. of IEEE ICT’96, pp.596–601, April 1996.
M. Okada, S. Hara, S. Komaki and N. Morinaga, “Optimum Synchronization of Orthogonal Multi-Carrier Modulated Signals,” Proc. of IEEE PIMRC’96, pp.863–867, October 1996.
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© 2000 Springer Science+Business Media Dordrecht
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Hara, S. (2000). Blind Frequency Offset/Symbol Timing/Symbol Period Estimation and Subcarrier Recovery for OFDM Signals in Fading Channels. In: Fazel, K., Kaiser, S. (eds) Multi-Carrier Spread Spectrum & Related Topics. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-4463-0_31
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DOI: https://doi.org/10.1007/978-1-4615-4463-0_31
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4613-7010-9
Online ISBN: 978-1-4615-4463-0
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