Some recently proposed robust methods for timedomain timing and frequency synchronization in OFDM systems incorporate the use of cross-correlation based threshold detection in their timing adjustment and joint time-frequency algorithms. In this paper, we analyze the threshold criterion used and derive its theoretical performance. This translates into a better characterization of these OFDM synchronization algorithms, leading to a closer match between design expectations and practical performance. Computer simulations show a strong agreement between theoretical predictions and numerical results.
Threshold Detection Analysis for OFDM Timing and Frequency Recovery
ROSATI, STEFANO;VANELLI CORALLI, ALESSANDRO;CORAZZA, GIOVANNI EMANUELE;
2009
Abstract
Some recently proposed robust methods for timedomain timing and frequency synchronization in OFDM systems incorporate the use of cross-correlation based threshold detection in their timing adjustment and joint time-frequency algorithms. In this paper, we analyze the threshold criterion used and derive its theoretical performance. This translates into a better characterization of these OFDM synchronization algorithms, leading to a closer match between design expectations and practical performance. Computer simulations show a strong agreement between theoretical predictions and numerical results.File in questo prodotto:
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