Apparatus and method for compensating for timing and phase error using a poly-phase filter

摘要

A poly-phase filter and an apparatus which compensates for timing error and a method for implementing such compensation are provided. The poly-phase filter can compensate for the timing and phase error of an input signal which occur in a time period which is shorter than the sampling period by obtaining impulse responses of a mother filter having a pass band of (Fs/2n) where Fs is the sampling frequency and n is a positive number, re-sampling the obtained impulse responses using a plurality of clock signals having a phase difference of (2* pi /n s), and selecting one filter among the filter set having group delays corresponding to the detected phase, and filtering the input signal using the poly-phase filter constituted by a series of filter sets adopting the re-sampled respective impulse responses as transmitting characteristics of the element filters.