Multi-level decision feedback equalization for saturation recording
J.G. Kenney, Larry Richard Carley, Roger W. Wood · IEEE Transactions on Magnetics · 1993
An impediment to the practical use of fixed-delay tree search with decision feedback (FDTS/DF) for retrieving data from hard disk drives is that four additions and one multiplications must be evaluated in one clock cycle. It is shown here that on recording channels using 2/3