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Volume 30 Issue 9
Jan.  2011
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Qin Wen, Peng Qi-Cong. Performance Improvement of Time-Varing OFDM Channel Estimation and Equalization using ICI Self-Cancellation[J]. Journal of Electronics & Information Technology, 2008, 30(9): 2189-2192. doi: 10.3724/SP.J.1146.2007.00312
Citation: Qin Wen, Peng Qi-Cong. Performance Improvement of Time-Varing OFDM Channel Estimation and Equalization using ICI Self-Cancellation[J]. Journal of Electronics & Information Technology, 2008, 30(9): 2189-2192. doi: 10.3724/SP.J.1146.2007.00312

Performance Improvement of Time-Varing OFDM Channel Estimation and Equalization using ICI Self-Cancellation

doi: 10.3724/SP.J.1146.2007.00312
  • Received Date: 2007-03-05
  • Rev Recd Date: 2007-09-19
  • Publish Date: 2008-09-19
  • Rapidly time-varying channels degrade the performance of the Orthogonal Frequency Division Multiplexing (OFDM) due to severe InterCarrier-Interference (ICI). The most effective method of canceling the ICI is frequency equalization. But, it relies on precise channel estimation. Basis Expansion Model (BEM) can approximate time-varying channel accurately. And since then, only some finite model parameters need to be estimated to reconstruct the channel. However, the pilot-symbol-aided parameter estimation is still significantly affected by ICI from near non-pilot-symbol. So, in this work an ICI-self-cancellation parameter estimation method is proposed for BEM, by utilizing the high correlation between subcarrier ICIs. Simulations show better performance than the simplex BEM methods.
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