An Improved OFDM Timing Synchronization Algorithm

Abstract:

Orthogonal Frequency Division Multiplexing (OFDM) is a multi-carrier communication system and the system is very sensitive to synchronization errors. The problem that synchronization is not accurate can reduce the system performance largely. Based on the research of Schmidl & Cox and Minn algorithms, the paper proposed an improved timing synchronization algorithm by using the new training sequence in the frequency domain. The improved algorithm eliminates the peak platform problem and side lobe peak problem of the conventional synchronization algorithms in this article. The simulation at MATLAB shows that the improved algorithm overcomes the problems of the conventional algorithms and the timing judgment curve of the improved algorithm also has a very sharp peak at the timing synchronization position, compared with the conventional algorithm. So, the timing synchronization performance of the algorithm is better.

• Periodical: Applied Mechanics and Materials (Volumes 220-223)
• Pages: 2419-2422
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.220-223.2419
• Online since: November 2012
• Authors: Jing Dai, Fei Fei Guo, Guo Lin Zhang
• Keywords: Orthogonal Frequency Division Multiplexing (OFDM), Timing Judgment Function, Timing Synchronization Algorithm, Training Sequence

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