Blind channel estimation using zero-lag slice of third-order moment

An iterative algorithm is presented for blind channel estimation of a nonminimum phase system using the zero-lag slice (ZS) of its third-order moment (TOM) only. The proposed method has simple computations because it is performed by using simple one-dimensional (1-D) operations with fast convergency and needs calculation of the ZS only. Furthermore, our method achieves good results since the ZS estimate obtained from the received signal exhibits high reliability. Simulations verify the good performance of our method in relatively lower signal-to-noise ratios (SNRs) and when there is a channel length mismatch.