A system architecture for multi-level decision feedback equalization

System issues such as clock recovery, automatic gain control and determination of the filter coefficients for both the forward and backward equalizers are examined for multi-level decision feedback equalization (MDFE). A software implementation on 2/3(1,7) RLL coded data stored at a bit density of 1.67 PW50 and retrieved by an MR head demonstrate the implementation of a channel based on MDFE.<>