The MATLAB script “Blind_equalizer_l1.m,” on the accompanying
website, allows you to test the performance of the kurtosis based equalizer
for the case where the parameter l = 1. To explore the convergence behavior
of the stochastic adaptation algorithm (17.195), examine this program for
various constellation sizes and the step-size parameter μ. Note that for larger
constellations, convergence may occur only after many hundreds of thousands
or even millions of iterations. Hence, work patiently.