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A Simple and Efficient Timing Offset Estimation for OFDM Systems

By et al. H. Minn


A simple timing offset estimation method for orthogonal frequency division multiplexing (OFDM) systems as a modification to Schmidl & Cox’s method [14] is presented. By designing the training symbol, the timing metric plateau inherent in [14] is eliminated and hence performance is im-proved. The performances of the proposed method and [14] are evaluated by computer simulation in terms of estimator vari-ance. The timing offset estimator of [16] is also included in the performance comparison as another reference. The simulation results show that the proposed method achieves significantly smaller estimator variance. Using more samples in calculation of half symbol energy required in timing metric is shown to give more robustness against dispersive channel

Year: 2000
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