Equalization and interpolated timing recovery for a partial response channel

摘要

Presented is a receiver in a data read channel having an input terminal for receiving an input signal provided by a transmitter of the data read channel, and producing an output signal at an output terminal, the receiver comprising: a finite impulse response (FIR) filter coupled to the input terminal and having filter coefficients capable of being adapted; an interpolated timing recovery circuit coupled to an output of the FIR filter, the timing recovery circuit having an output signal coupled to the output terminal of the receiver; a timer circuit coupled to the output terminal and feedback connected to the timing recovery circuit; wherein the coefficients of the timing recovery circuit are dynamically adapted using a cost weighted function through a signal power spectrum of the data read channel. <IMAGE>