A Cross-Correlation Approach for Improved Timing Estimation in OFDM Broadcasting Systems


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Date: January 2008
Type: White Paper
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Overview: This research paper by American Institute of Aeronautics and Astronautics focuses on the timing synchronization of the received Orthogonal Frequency Division Multiplexing OFDM signal, for detecting reliably the start of the OFDM frame and positioning accurately the FFT window. An important category of approaches that are available in the literature, is the one where a null-symbol is used to detect the beginning of the frame. The null-symbol approach is suitable only for continuous transmissions. A different approach, is to blindly estimate the beginning of the OFDM symbol by exploiting the correlation between Cyclic-Prefix (CP) and the useful part of the symbol.

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