Decision feedback equalizers with constrained feedback taps for reduced error propagation
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United States of America Patent
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Dec 25, 2007
Grant Date -
Nov 18, 2004
app pub date -
Mar 19, 2004
filing date -
Mar 24, 2003
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Abstract
Constrained tap weights of a decision feedback equalizer are determined according to the channel impulse response of a channel and a constraint function. The constraint function is differentiable and is an approximation of a non-differentiable tap weight constraint function. The tap weight constraint function may have a constraint value M that is a function of a mean squared error of the estimated mean squared error at the output of the decision feedback equalizer.
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