DCT-based channel estimation for OFDM systems

@article{Yeh2004DCTbasedCE,
  title={DCT-based channel estimation for OFDM systems},
  author={Yen-Hui Yeh and Sau-Gee Chen},
  journal={2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577)},
  year={2004},
  volume={4},
  pages={2442-2446 Vol.4}
}
In this paper, based on the property of channel frequency response and the concept of interpolation in transform domain, we propose two discrete cosine transform (DCT)-based pilot-symbol-aided channel estimators, which can mitigate the aliasing error and high-frequency distortion of the direct discrete Fourier transform (DFT)-based channel estimators when the multipath fading channels have non-sample-spaced path delays. Both proposed estimators outperform the conventional DFT-based channel… CONTINUE READING
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