Pulse or digital communications – Equalizers – Automatic
Reexamination Certificate
2006-04-11
2006-04-11
Burd, Kevin (Department: 2631)
Pulse or digital communications
Equalizers
Automatic
C375S229000
Reexamination Certificate
active
07027501
ABSTRACT:
According to the present invention, methods and apparatus are provided for improving the signal quality of received transmission. An adaptive equalizer includes multiple output delay lines. One output delay line is configured to provide gradient elements. Another output delay line is configured with coefficient multipliers calculated using the gradient elements. The coefficient multipliers are used to alter a received signal to more closely correspond to an expected signal. The adaptive equalizer can be used in systems such as optical transceivers.
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patent: 6289046 (2001-09-01), Takeuchi et al.
patent: 6438162 (2002-08-01), Boyd et al.
John G. Proakis, Masoud Salehi, “Communication Systems Engineering”, p. 577-595 ISBN 0-13-158932-6, © 1994 by Prentice-Hall, Inc.
Chiu Kar Shing
Dakshinamurthy Raman
Fu Ki Chun
Hanson Delon
Leung Ming-Tak
Aghdam Freshteh N
Beyer Weaver & Thomas LLP
Burd Kevin
Tripath Technology Inc.
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