Pulse or digital communications – Transceivers
Reexamination Certificate
2005-08-09
2005-08-09
Tse, Young T. (Department: 2637)
Pulse or digital communications
Transceivers
C375S222000, C375S233000, C375S285000, C370S286000
Reexamination Certificate
active
06928107
ABSTRACT:
A system and method for training an equalizer structure of a digital data communication system in order to compensate for transmission impairments on the line particularly wherein one transceiver of the two is resource limited. In an exemplary embodiment, a line card provides equalization feedback to a modem whenever changes to the equalization are beneficial. The line card calculates a limited number of tap correction factors at one time, transfers the tap correction factors to the modem, and then trains up a new set of tap correction factors. The modem incorporates the tap correction factors into the taps of the corresponding frequency ranges. The process iterates indefinitely through the transmission resulting in a very high quality equalization.
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Jonsson Ragnar Hlynur
Olafsson Sverrir
Chang Edith
Farjami & Farjami LLP
Mindspeed Technologies Inc.
Tse Young T.
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