Variable step-size constant modulus algorithm based on exponential multi-delay error signal autocorrelation

Abstract

In order to further improve the convergence speed of the exponential variable step-size constant module algorithm,a variable step-size constant module algorithm based on the exponential multi-delay error signal autocorrelation was proposed on the basis of the analysis of the error signal autocorrelation,and the multi-delay error signal autocorrelation functions were adopted to control the steps.Compared with the non-delay and unit delay,the multi-delay error signal autocorrelation of the algorithm can provide simpler and more accurate information for training trajectory,so the algorithm converges faster,and the convergence process is smoother and more stable.The underwater acoustic channel simulation experiments further verify the advantage of the algorithm in the convergence speed.