On feed-forward and feedback timing recovery for digital magnetic recording systems
S.A. Raghavan, H.K. Thapar · IEEE Transactions on Magnetics · 1991
Two different timing recovery techniques, namely, feedforward and feedback, for digital magnetic recording systems are compared. The feedforward approach uses nonlinear filtering to derive the timing information, whereas the feedback approach relies on detected symbols from a suitably equalized signal. The steady-state performance of these timing recovery methods is compared under the same operating conditions. It is shown that the feedforward method provides superior performance.>