Pulse or digital communications – Equalizers
Reexamination Certificate
2002-05-29
2011-12-27
Payne, David C. (Department: 2611)
Pulse or digital communications
Equalizers
C375S232000, C375S233000
Reexamination Certificate
active
08085838
ABSTRACT:
A receiver comprises an adaptive filter having an input for a digitized input signal, means for storing a pre-designed filter characteristic, means for analyzing a digital representation of the input signal to determine a desired position of the filter characteristic to match the system requirements, and means for adapting the stored pre-designed filter characteristic in the frequency domain and/or the time domain to match the system requirements and for transforming the adapted filter characteristic to the time domain to update coefficients for the adaptive filter and for loading updated coefficients into adaptive filter. The updating of the coefficients may be done periodically. The adaptation may be one or more of adjusting bandwidth, frequency shift and, in the case of a bandpass characteristic, superimposing characteristics.
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Payne David C.
Potomac Patent Group PLLC
ST-Ericsson SA
Wong Linda
LandOfFree
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