Pulse or digital communications – Repeaters – Testing
Patent
1987-08-12
1988-12-06
Griffin, Robert L.
Pulse or digital communications
Repeaters
Testing
3647242, 333 18, H04B 314
Patent
active
047899948
ABSTRACT:
Operation of a decision feedback equalizer is enhanced by measuring the intersymbol interference precursor effect on each symbol decision output and utilizing that measurement information to update equalizer, transversal filter, tap multiplier coefficients in a direction to reduce the precursor and postcursor effects. In one embodiment, the updated coefficient information is further utilized to adjust equalizer input signal sampling phase toward a time of maximum data signal eye opening.
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Randall Roderick K.
Zucker William F.
American Telephone and Telegraph Company AT&T Bell Laboratories
Chin Stephen
Cubert Jack S.
Griffin Robert L.
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