Adaptive equalization with group delay

Details Adaptive equalization with group delay Adaptive equalization with group delay

2011-04-12

2011-04-12

Payne, David C (Department: 2611)

Pulse or digital communications

Equalizers

Automatic

C375S232000, C375S234000, C375S371000, C375S376000, C375S224000, C398S208000, C398S209000, C398S149000, C398S161000

Reexamination Certificate

active

07924910

ABSTRACT:
Methods, apparatuses, and systems are presented for performing adaptive equalization involving receiving a signal originating from a channel associated with inter-symbol interference, filtering the signal using a filter having a plurality of adjustable tap weights to produce a filtered signal, and adaptively updating each of the plurality of adjustable tap weights to a new value to reduce effects of inter-symbol interference, wherein each of the plurality of adjustable tap weights is adaptively updated to take into account a constraint relating to a measure of error in the filtered signal and a constraint relating to group delay associated with the filter. Each of the plurality of adjustable tap weights may be adaptively updated to drive group delay associated with the filter toward a target group delay.

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