Variable Step-size CMA Blind Equalization based on Non-linear Function of Error Signal

Variable step-size was introduced in the constant module blind equalization algorithm (CMA). A nonlinear function of remainder error was taken as a step-size control factor to control the change of step-size. This article proposed a kind of new constant module variable step-size blind equalization algorithm, and analyzed the selection principle of parameters. Theory and simulation indicate that, compared with the traditional constant module blind equalization algorithm, new algorithm has the quicker convergence rate and smaller stable remainder error.