Pulse or digital communications – Transceivers – Modems
Reexamination Certificate
2005-03-15
2005-03-15
Ha, Dac V. (Department: 2631)
Pulse or digital communications
Transceivers
Modems
C375S233000, C375S350000, C455S307000, C708S323000
Reexamination Certificate
active
06868119
ABSTRACT:
A modem receiver has an equalizer which receives an input signal, an adaptive compensator, and a decision block which generates a decision related to the input signal. A difference between an output of the equalizer and a compensating signal output of the adaptive compensator provides an input for the decision block. A difference between the output of the equalizer and an output of the decision block provides an error estimation signal which is a first input to the adaptive compensator. A difference between the input to the decision block and the output of the decision block provides an error adaptation signal which is a second input to the adaptive compensator.
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Article entitled “Timing Recovery for Blind Equalization” by Jablon, Farrow and Chou, AT&T Bell Laboratories, Middletown, NJ, 22ACSSC-12/88/0112, 1988 Maple Press.
Article entitled “Joint Blind Equalization, Carrier recovery, and Timing Recovery for High-Order QAM Signal Constellations” by Neil K. Jablon, IEEE Transactions on Signal Processing, vol. 40, No. 6, Jun. 1992.
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Chapter 12 of the Text Book entitled “Adaptive Signal Processing” by Widrow and Stearns, Prentice-Hall, Inc. Engelwood Cliffs, NJ, 1985.
Goldstein Yurl
Okunev Yuri
Gordon & Jacobson, PC
Ha Dac V.
PC-TEL, Inc.
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