On the convergence of blind adaptive equalizers for constant modulus signals

This paper studies the behavior of the error sequence of stop-and-go variants of two adaptive blind equalizers, namely CMA2-2 and Sate's algorithm. It is shown that for transmitted signals with constant modulus gamma, the equalizer output can be made to lie within the circle of radius gamma root c infinitely often, for some value of c that is only slightly larger than one.