Digital filter having phase-adjustment ability

Details Digital filter having phase-adjustment ability Digital filter having phase-adjustment ability

1997-03-24

1999-03-02

Chin, Stephen

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

375350, H04L 700

Patent

active

058780963

ABSTRACT:
Disclosed is a digital filter having phase-adjustment ability, and more particularly to a digital filter system which can restore the phase of data transmitted via digital radio communication and thereby enhances the noise-immunity of data and the correct bit decision. The digital filter mainly includes a hold back data unit, a digital filter unit, and a signal phase modify unit to remove noises in the signals and to modify and restore correct digital wave-form signals. The digital filter having phase-adjustment ability is suitable for use in digital radio phones, pagers, etc. commonly found in the radio communication systems.

REFERENCES:
patent: 3617717 (1971-11-01), Smith
patent: 3806918 (1974-04-01), Cauthron et al.
patent: 4339184 (1982-07-01), Bagdis
patent: 4644566 (1987-02-01), Vercellotti et al.
patent: 5666079 (1997-09-01), Ma

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