Time and Frequency Synchronization for OFDMA Uplink System using the SAGE Algorithm

@article{Lee2007TimeAF,
  title={Time and Frequency Synchronization for OFDMA Uplink System using the SAGE Algorithm},
  author={Jong-Ho Lee and Seong-Cheol Kim},
  journal={IEEE Transactions on Wireless Communications},
  year={2007},
  volume={6}
}
In this letter, we propose an iterative time and frequency synchronization scheme for orthogonal frequency-division multiple access (OFDMA) uplink system using the space-alternating generalized expectation-maximization (SAGE) algorithm. In the proposed scheme, the expectation step of the SAGE algorithm is intended to remove the multiple-access interference (MAI) caused by the other asynchronous users. Then, the maximization step is utilized in the timing and frequency offset estimation of each… CONTINUE READING

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