Equalizer and a Method for Filtering a Signal
AssigneeMotorola, Inc.
InventorAlexander A. Semjonov
Life of this patent
Estimating the term…
Abstract
An equalizer comprising memory for storing a set of filter tap coefficients for defining the filtering characteristics to be applied to an input signal; and means for updating the set of filter tap coefficients based on an error signal derived from a difference between a received signal and a filtered signal unless an error code associated with a received data packet indicates an error in the received data packet.
Claims7
An equalizer comprising:
- memory for storing a set of filter tap coefficients for defining the filtering characteristics to be applied to an input signal;
- and means for updating the set of filter tap coefficients based on an error signal derived from a difference between a received signal and a filtered signal unless an error code associated with a received data packet indicates an error in the received data packet.
An equalizer according to any preceding claim, wherein the error code is a checksum.
A modem comprising an equalizer according to any preceding claim.
A method for filtering a signal, the method comprising:
- storing a set of filter tap coefficients for defining the filtering characteristics to be applied to an input signal;
- updating the set of filter tap coefficients based on an error signal derived from a difference between a received signal and a filtered signal unless an error code associated with a received data packet indicates an error in the received data packet;
- and filtering the input signal using the set of filter tap coefficients when the error code associated with the received data packet indicates an error or using the updated set of filter tap coefficients when the error code associated with the received data packet does not indicate an error.
Dependencies are inferred from the claim text.