Alien interference removal in vectored DSL
AssigneeIkanos Communications, Inc.
InventorsNicholas P. Sands, Kevin D. Fisher
Life of this patent
Estimating the term…
Loading patent…
AssigneeIkanos Communications, Inc.
InventorsNicholas P. Sands, Kevin D. Fisher
Estimating the term…
A vectored DSL system reduces or eliminates correlated alien interference in active DSL lines in the vectored system by collecting pseudo signals from inactive lines that do not carry upstream DSL transmissions and/or from common-mode voltage signals from active lines. The collected pseudo signals contain in-domain interference, such as FEXT interference from the active DSL lines in the vectored system, and correlated alien interference. After removing the in-domain interference from the pseudo signals, the remaining alien interference data can be used to generate FEXT cancellation coefficients or the like that are used in DSL vectoring to remove the correlated alien interference from upstream DSL user signals from the active DSL lines. The generated FEXT cancellation coefficients are used in a manner analogous to in-domain FEXT data collected from the active lines during training, tracking, etc.
A method of removing correlated alien interference from upstream DSL user signals in a vectored DSL system, the method comprising:
A method for performing DSL vectoring in a DSL system having a plurality of active lines, the method comprising:
A method for performing DSL vectoring in a DSL system having a plurality of active lines, the method comprising:
Dependencies are inferred from the claim text.