Decision feedback equalization scheme with minimum correction delay
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United States of America Patent
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Apr 15, 2014
Grant Date -
Jun 20, 2013
app pub date -
Feb 21, 2013
filing date -
Oct 24, 2008
priority date (Note) -
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Abstract
A decision feedback equalizer includes a correction circuit to correct a sampled value of an incoming bit based on intersymbol interference of at least one preceding bit, and to generate a received bit. The correction circuit includes a first multiplexer and a first pair of latches coupled thereto. The first multiplexer is controlled by a clock signal to generate a digital level representative of a sign of a first correction coefficient to be subtracted from the sampled value of the incoming bit for deleting the intersymbol interference. The first pair of latches receives as input the received bit and is clocked in phase opposition by the clock signal to generate respective latched replicas of the received bit during respective active phases of the clock signal. The respective latched replicas are input to the first multiplexer.
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