INSTITUTE OF INFORMATION TECHNOLOGIES - BAS

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Cybernetics and Information Technologies
Volume 6, No 2. Sofia, 2006, Bulgarian Academy of Sciences


Time and Frequency Synchronization in OFDM Communication Systems

Zdravko Nikolov, Georgi Horozov, Vassil Vassilev, Chavdar Korsemov

Institute of Information Technologies, 1113 Sofia
Emails: znikolov@iit.bas.bg, ghorozov@gmail.com, vasil@mps.bg, koresmov@exiciet.com

Abstract: The paper investigates the influence of the frequency and time offset on the in-symbol and inter-symbol interference in OFDM communication systems. A method is proposed for blind estimation of the offsets, which uses the cycle stationarity introduced in the information signal. A possibility is considered to accomplish the estimation, using the virtual subcarriers.