A synchronization algorithm based on cyclostationarity in a pilot-embedded OFDM system

Authors:
Liting Guo
Affiliations:
Fuzhou University, Fuzhou, Fujian, China
Venue:
Mobility '07 Proceedings of the 4th international conference on mobile technology, applications, and systems and the 1st international symposium on Computer human interaction in mobile technology
Year:
2007

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A novel channel estimation and tracking method for wireless OFDM systems based on pilots and Kalman filtering

IEEE Transactions on Consumer Electronics

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Abstract

In this paper, the cyclostationarity property of the OFDM signal which contains pilots is first proved. Then an algorithm for estimating the carrier frequency offset based on the cyclic autocorrelation function of the cyclostationary signal is proposed. Compared with those algorithms using pilots directly, this new algorithm can get larger frequency offset estimation up to half of the bandwidth of the OFDM system, and the symbol timing can be estimated as well.