The research and analysis of constant modulus and MSE-based variable step size CMA

In digital communication systems, due to multipath transmission and the bandwidth of cable, there are some ISI(inter-symbol-interference) in the signals. Blind equalization that does not require a pilot sequence can transmit adaptive equalizer tap coefficients and can effectively remove inter-symbol interference. This paper introduces the principle of blind equalization technique that focus on the constant modulus algorithm and MSE-based variable step size CMA algorithms. We will simulation on two kinds of algorithms by using Matlab. Moreover, we also analysis their performance.