Low-Complexity Enhanced DFT-based Channel Estimation for OFDM Systems with virtual Subcarriers

  title={Low-Complexity Enhanced DFT-based Channel Estimation for OFDM Systems with virtual Subcarriers},
  author={Xiaolin Hou and Zhan Zhang and Hidetoshi Kayama},
  journal={2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications},
Traditional discrete Fourier transform (DFT) based channel estimation will suffer from significant performance degradation due to the edge effect in practical orthogonal frequency division multiplexing (OFDM) systems with virtual subcarriers. In this paper, a novel enhanced DFT-based channel estimation method is proposed, which can effectively mitigate the edge effect caused by virtual subcarriers via edge value repetition in the frequency domain and zero insertion in the time domain, thus to… CONTINUE READING
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