Pulse or digital communications – Equalizers – Automatic
Reexamination Certificate
2010-07-02
2011-11-08
Bayard, Emmanuel (Department: 2611)
Pulse or digital communications
Equalizers
Automatic
C375S331000
Reexamination Certificate
active
08054877
ABSTRACT:
Methods and apparatus are provided for receiving an input signal. In an embodiment of the invention a current candidate QAM constellation can be selected. A mean squared error of a signal responsive to the input signal can be computed based on the current candidate QAM constellation. The computed mean squared error can be compared to a threshold error value. The invention advantageously allows for relatively efficient and relatively reliable equalization of signals transmitted with an unknown QAM constellation, and allows for relatively efficient and reliable recovery of the unknown QAM constellation.
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Bayard Emmanuel
Marvell International Ltd.
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