Research Article
An efficient iterative DFT-based channel estimation for MIMO-OFDM systems on multipath channels
@INPROCEEDINGS{10.1109/CHINACOM.2008.4684966, author={JIAN HAIFANG and SHI YIN}, title={An efficient iterative DFT-based channel estimation for MIMO-OFDM systems on multipath channels}, proceedings={ChinaCom2008-Wireless Communications and Networking Symposium}, publisher={IEEE}, proceedings_a={CHINACOM2008-WCN}, year={2008}, month={11}, keywords={Channel estimation; MIMO-OFDM; DFT-based; IEEE P802.11n D2.0}, doi={10.1109/CHINACOM.2008.4684966} }- JIAN HAIFANG
SHI YIN
Year: 2008
An efficient iterative DFT-based channel estimation for MIMO-OFDM systems on multipath channels
CHINACOM2008-WCN
IEEE
DOI: 10.1109/CHINACOM.2008.4684966
Abstract
In this paper, an efficient iterative discrete Fourier transform (DFT) -based channel estimator with good performance for multiple-input and multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) systems such as IEEE 802.11n which retain some sub-carriers as null sub-carriers (or virtual carriers) is proposed. In order to eliminate the mean-square error (MSE) floor effect existed in conventional DFT-based channel estimators, we proposed a low-complexity method to detect the significant channel impulse response (CIR) taps, which neither need any statistical channel information nor a predetermined threshold value. Analysis and simulation results show that the proposed method has much better performance than conventional DFT-based channel estimators and without MSE floor effect.