Blind ISI correction by using CMA

In this work, a method of ISI correction by using the constant modulus algorithm, CMA, is presented. It consists of the introduction of an adjusting variable coefficient to improve the usually low speed of convergence of the classic CMA. An analytical justification is derived. The whole system has been computationally instrumented and extensively tested on a model of a dispersive-time varying-digital communication channel AWGN, with modulation QPSK for efficient ISI reduction. The experimental results are in accordance with the expected analytical estimations.