Research Article
An Enhanced Echo MIMO Channel Estimation Method
@INPROCEEDINGS{10.1109/ChinaCom.2012.6417513, author={Shuo Li and Bingquan Li and Yantao Han and Chengwen Xing and Zesong Fei and Jingming Kuang}, title={An Enhanced Echo MIMO Channel Estimation Method}, proceedings={7th International Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2012}, month={10}, keywords={multi-input multi-output (mimo); channel state information (csi); echo channel estimation;}, doi={10.1109/ChinaCom.2012.6417513} }- Shuo Li
Bingquan Li
Yantao Han
Chengwen Xing
Zesong Fei
Jingming Kuang
Year: 2012
An Enhanced Echo MIMO Channel Estimation Method
CHINACOM
IEEE
DOI: 10.1109/ChinaCom.2012.6417513
Abstract
An echo channel estimation method in the multi-input multi-output (MIMO) system under the frequency-flat fading channel is presented. The key idea of echo MIMO estimation method is to reflect, or “echo”, back the received training signal to the transmitter. But the noise reflected back to the BS together with the training signal will critically decrease the accuracy of channel estimation. In this paper, we propose a preprocessing method, which can eliminate the impact of noise, before reflecting back the training signal to solve this problem. Moreover, based on Kronecker channel model, different designs of preprocessing matrix are proposed under different antenna configuration, which will result in different estimation performance. Simulation results show that the enhanced echo MIMO channel estimation method could effectively decrease the mean square errors (MSEs) of channel estimation.