Apparatus and method for compensating for timing and phase error

Details Apparatus and method for compensating for timing and phase error Apparatus and method for compensating for timing and phase error

1996-10-30

1999-06-29

Sheikh, Ayaz R.

Boots, shoes, and leggings

375229, H03L 700

Patent

active

059177357

ABSTRACT:
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.
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.

REFERENCES:
patent: 4780892 (1988-10-01), Lagadec
patent: 4791597 (1988-12-01), Miron et al.
patent: 4881191 (1989-11-01), Morton
patent: 5311457 (1994-05-01), Shizawa

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