Apparatus and method for clock adjustment in receiver of communication system

摘要

An apparatus and method for clock adjustment in a receiving end of a communication system. The receiving end includes an analog to digital converter (ADC) and a frequency/phase error estimator. The ADC receives a transmitting signal and converts to a digital signal. The frequency/phase error estimator receives the digital signal and accordingly outputs a phase error signal. The device for clock adjustment includes a shaping filter and a phase adjuster. The shaping filter outputs a phase adjustment signal in accordance with the phase error signal and has a noise shaping property. The phase adjuster is connected to the shaping filter for outputting a clock signal in accordance with the phase adjustment signal.