Implementing the Clock Synchronization in ADSL Systems Using the Digital Phase-locking

A clock synchronization method used in ADSL systems based on Discrete Multitone(DMT) is presented. According to the phase-locking theory, clock synchronization is implemented using digital method based on the DMT structure. In this method, no special phase-locking loop is needed, so the implementing complexity is decreased. Practical examples show this method has a high precision and the ability of auto-adaptation and anti-jamming is good.