INTERFERENCE ROBUST CLOCK RECOVERY

摘要

The invention relates to a clock recovery device and method for establishing synchronization with a received communication signal. The invention is based on a two-state clock recovery mechanism. When in a first state, whenever the receiver is not synchronized, the clock recovery mechanism is handled by a Gardner detector coupled with interference suppression, while when in a second state, whenever the receiver is synchronized, the clock recovery mechanism is handled by an early-late detector, re-using loop filters and interfaces of the Gardner detector. In this way the clock recovery device may accurately synchronize even in cases with strong external interference.