Research of blind equalization algorithm based on third second order normalized cumulant in QAM system

A novel third-second order normalized cumulant blind equalization algorithm in QAM system based on Symmetric-to-Asymmetric Transformation(SAT) has been brought forward.The defect has been overcome in this paper,which channel equalization can be not directly applied because the third order cumulant of symmetrically distributed signal is zero.Simulation results show that the proposed algorithm has better performances with low complexity,fast convergence and small steady residual error than the same algorithm.