Apparatus and method for impulsive noise cancellation

Details Apparatus and method for impulsive noise cancellation Apparatus and method for impulsive noise cancellation

1994-04-15

1995-12-26

Tse, Young

Pulse or digital communications

Receivers

Interference or noise reduction

364726, H03D 104, G06F 1714

Patent

active

054794404

ABSTRACT:
The present invention comprises an apparatus and method for substantially canceling impulsive noise from data. Such substantial cancellation is achieved by converting the time-domain data into its corresponding frequency spectrum, such that the impulsive noise threshold can be determined. Once such threshold is determined, all frequency components less than this threshold are canceled with the resulting spectrum being converted back to the time-domain. This substantially impulse free signal can then be substituted into the original signal where the impulsive noise occurs, thus, resulting in a signal having minimally distorted data that is substantially devoid of any impulsive noise. This signal may be further processed by an adaptive filter stage to substantially remove any remaining noise from the signal.

REFERENCES:
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patent: 4516249 (1985-05-01), Cook et al.
patent: 4899289 (1990-02-01), Appel
patent: 5065322 (1991-11-01), Mazur et al.
patent: 5157394 (1992-10-01), Bright
patent: 5229765 (1993-07-01), Gardner
patent: 5263048 (1993-11-01), Wade

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