Hyperbolic tangent error function based variable step size blind equalization algorithm
Yanping Zhang · Ship Science and Technology · 2007
For greatly reducing the MSE(Mean Square Error)of CMA(Constant Modulus Algorithm)at the end of the convergence,HE(Hyperbolic tangent Error function)is defined,HEVBE(Hyperbolic tangent Error function based Variable step size Blind Equalization algorithm)proposed.The HEVBE has fast convergent speed by variable step size,and the small MSE duo to odd symmetric feature of the HE about axis that output modulus of equalizer is equal to constant modulus.The efficiency of the HEVBE is proved by computer simulation of negative acoustic gradient in underwater acoustic channels.