Iterative precoding system and method for resource limited data transceivers
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United States of America Patent
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Aug 9, 2005
Grant Date -
N/A
app pub date -
Sep 27, 2000
filing date -
Sep 27, 1999
priority date (Note) -
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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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