A blind equalization algorithm may switche to a Decision-Directed (DD) equalization mode in order to speed up the convergence rate and improve the steady-state performance.
The crux for this kind of equalization is the control of the swithes between the two equalizatiom mode. A new blind equalization scheme is proposed which automatically controls the switches between the blind equalization mode and DD equalization mode according to the estimated error variance, and the blind equalization mode used in the proposed scheme is the Modified Constant Modulus Algorithm. Simulation resultsshows that the proposed blind equalization scheme can present siginificant improvements in the convergence rates along with steady-state performance.
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