METHODS AND SYSTEMS FOR MAINTAINING SPECTRAL COMPATIBILITY BETWEEN CO-EXISTING LEGACY AND WIDEBAND DSL SERVICES
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United States of America Patent
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Issued Date -
Sep 24, 2015
app pub date -
Mar 19, 2015
filing date -
Mar 19, 2014
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Abstract
According to certain general aspects, the present invention relates to methods for transmitting signals on twisted wire-pairs above 30 MHz using frequency division duplexing (FDD) in support of 1 Gb/s aggregate services on short loop lengths while maintaining spectral compatibility with legacy ADSL2 (≦2.2 MHz bandwidth) and VDSL2 services (≦30 MHz bandwidth). An advantage of the FDD approach for Gb/s transmission according to the invention is spectral compatibility with legacy DSL services without the sacrifice of any capacity of the wider band.
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