Abstract: A new blind channel identification and equalization method based on the modulation induced cyclostationarity is proposed.The existing closed-form solution for blind channel identification always has the defects of low estimation accuracy and great variance,and the source signals can not be recovered entirely too.The cyclic power spectrum equation is obtained by means of proper variable substitution of the cyclic power spectrum,then a time domain solution is obtained by Z inverse transformation of the cyclic power spectrum equation.Simulation results show that the performance of the proposed method outperforms that of the closed-form solution,and the source signals can be recovered absolutely.