A new timing recovery architecture for fast convergence

For any given communication channel, it is desirable to recover all the initial timing information during acquisition and/or any phase and frequency changes during tracking as fast as possible. In this paper, we propose the oversampled per-survivor processing (PSP) timing recovery (TR) architecture to achieve fast convergence rate in the applications of magnetic recording channels. Its performance is compared with the symbol-rate PSP-based TR, the oversampled conventional TR (OCTR), and also with the symbol-rate conventional TR (CTR) architecture used in today´s magnetic recording read-channel chip architectures. Results indicate that the oversampled PSP (OPSP) TR yields the best bit-error rate (BER) performance among other TR architectures when fast convergence is required.