Adaptive equalization employing pattern recognition

Details Adaptive equalization employing pattern recognition Adaptive equalization employing pattern recognition

2008-07-30

2011-10-25

Puente, Eva (Department: 2611)

Pulse or digital communications

Equalizers

Automatic

C375S233000, C375S231000, C375S348000, C375S349000, C370S222000

Reexamination Certificate

active

08045609

ABSTRACT:
In described embodiments, an adaptive equalizer employed by a receiver in a communication channel, such as Fiber Channel, employs pattern recognition. When a repeating pattern, such as an IDLE or ARBFF pattern, is employed by a standard to, for example, maintain a communication link, an equalizer of the receiver might adaptively set its equalizer parameters based on characteristics of the signal energy of the repeating pattern rather than adaptively set its equalizer parameters based on characteristics of the signal energy of generally random user data carried on the link. Pattern recognition by the receiver allows for maintaining adaptive equalizer parameters at settings preferred for data detection of the typical random data, improving data detection performance of the receiver when the channel transitions from a preset or synchronization repeating pattern to a user random data pattern.

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