An Enhanced DFT-Based Channel Estimator for LTE-A Uplink

  title={An Enhanced DFT-Based Channel Estimator for LTE-A Uplink},
  author={Qingchuan Zhang and Xudong Zhu and Tao Yang and Jin Liu},
  journal={IEEE Transactions on Vehicular Technology},
In this paper, we investigate the popular discrete Fourier transform (DFT)-based channel estimator (D-bCE) for Long-Term Evolution (LTE)-Advanced uplink. Due to limitations of the current pilot pattern, orthogonality among channels of multiple antennas at the time domain does not exactly hold. This degrades the performance of a conventional D-bCE severely. Therefore, we propose a novel enhancement of the D-bCE by using the frequency-domain weighting scheme. By analyzing the mean square error… CONTINUE READING


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