A Variable Step-Size Dual-Mode Blind Equalization Algorithm Based on Cadzow Theorem

To overcome the shortcomings that slow convergence rate and big steady-state error of the constant modulus algorithm, a variable step-size dual mode blind equalization based on Cadzow theorem is brought forward. Utilizing the normalized cumulant of order (4,2) and under the direction of Cadzow theorem, the new algorithm will speed up the convergence rate and decrease the steady-state error under the help of step-size. It will turn to the DD algorithm to get better effect of convergence. The algorithm´s better equalization property is proved by the computer simulation results.