Pulse or digital communications – Equalizers – Automatic
Reexamination Certificate
2006-05-16
2006-05-16
Chin, Stephen (Department: 2634)
Pulse or digital communications
Equalizers
Automatic
C375S222000, C375S229000, C375S235000
Reexamination Certificate
active
07046726
ABSTRACT:
A method and apparatus for a decision feedback equalizer wherein a correction term is used to compensate for slicer errors, thus avoiding error propagation. Filter coefficients for the equalizer are selected so as to minimize a cost function for the equalizer. The cost function calculation includes a correction term. The correction term is a function of the energy of the filter coefficients. In one embodiment, the cost function includes a Mean Squared Error (MSE) calculation. The equalizer includes a coefficient generator responsive to the correction term. The correction term may depend on the Signal-to-Interference-and-Noise Ratio (SINR) at the output of the equalizer.
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Corbaton Ivan Jesus Fernandez
Jayaraman Srikant
Smee John E.
Godsey Sandra L.
Joseph Jaison
Qualcomm Inc.
Wadsworth Philip
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