A Novel Direct Blind MMSE Equalization Algorithm and the Adaptive Implementation
Yuan Si-jie · Dianzi xuebao · 2011
In the direct blind MMSE equalization algorithm based on cross-correlation vector estimation,two auto-correlation matrix of the received signal is usually used to compute the outer-product of cross-correlation vector.A novel blind MMSE equalization algorithm is proposed,which requires only one auto-correlation matrix to obtain the outer-product based on the property of shift matrix.The computational complexity is reduced by two times.Then an efficient fast adaptive implementation of the novel algorithm is presented to recursively update the equalizer coefficient vector real time.It has the computational complexity of O(K2).Numerical simulations show that the proposed algorithm has better performance then the old algorithm and it is robust to channel order mismatch.Furthermore,the adaptive implementation has good convergence performance.