Bibliography on cyclostationarity
Signal Processing
New decision feedback channel estimation for OFDM systems
WTS'09 Proceedings of the 2009 conference on Wireless Telecommunications Symposium
OFDM channel estimation based on Gaussian radial basis function interpolation
ICACT'09 Proceedings of the 11th international conference on Advanced Communication Technology - Volume 1
Enhanced channel estimation for OFDM systems with multiple transmit antennas
APCC'09 Proceedings of the 15th Asia-Pacific conference on Communications
decision feedback channel estimation for alamouti coded OFDM-MIMO systems
WTS'10 Proceedings of the 9th conference on Wireless telecommunications symposium
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A channel estimation method based on frequency-domain pilots and time-domain processing (FPTP) is proposed for OFDM systems in time-varying channels. Through discrete Fourier transform (DFT), the channel impulse response (ClR) is estimated by using the frequency-domain pilots, which is equivalent to the CIR estimated by cyclic correlation using time-domain pilot sequence. Hence, the channel estimation error, caused by the spectral leakage of the DFT, can be reduced by canceling the non-idea auto-correlation property of the pilot sequence in time-domain. At the same time, the complicated cyclic correlation computation in time-domain is evitable. The theoretical analysis and simulation results show that the proposed method outperforms the traditional DFT-based method and Wiener filter algorithm in time-varying multipath fading channels. Moreover, the uncoded bit error rate (BER) performance of proposed algorithm is very close to that with perfect channel knowledge, especially in fast fading channels.