A T/2 Fractionally Spaced Variable Step Size Blind Equalization Algorithm
Ziyi Liu · Guangxi Communication Technology · 2013
Aiming the contradicted issues of fixed step in the convergence speed and residual error performance requirements,a variable step size blind equalization algorithm is proposed based on fractionally spaced equalizer(FSE) and modified constant modulus algorithm(MCMA).The algorithm utilized the error function of nonlinear function relationship adaptive to adjustment step size.Its simulated is made for the fixed step size and vary step size of T/2 FSE MCMA with QPSK signal and results show that the later algorithm can effectively improve channel equalizations by improving the convergence rate and reducing residual error.