Study on Subspace-based Blind Channel Estimation for MIMO-OFDM System
Zhang Xi-min · Communications technology · 2010
To reduce the algorithm complexity,improve the channel estimation for MIMO-OFDM system,the paper first gives a signal channel model and provides a subspace-based blind channel estimation algorithm,which is based on decomposition of the subspace,and uses the orthogonality of the signal subspace and noise subspace to separate them.In addition,the estimation results of the other sub-carrier wave are achieved by zero-filling interpolation technology.In this process,no statistic information is required.Simulation results show that this algorithm is faster in convergence rate and better in estimation accuracy.