A Semi-blind Channel Estimation Method Based on Subspace Iterate for the MIMO-OFDM Communication Systems
Tingting Cao, Ziwei Zheng, Hong-Qiong Zhou, Jie Min · International Conference on Electric Information and Control Engineering · 2012
In the course of subspace decomposition based channel estimation, when estimate the autocorrelation matrix of received signal, the system will caused residual error. A semi-blind channel estimation method based on subspace iterate was proposed for the MIMO-OFDM wireless communication systems in this paper, the purpose is to reduce the impact of residual error on channel estimation system after iterations of the received signal vector. The simulation analysis shows that the proposed algorithm can effectively reduce the residual error, the performances are significantly better than the traditional subspace methods.