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- W1501474675 abstract "In the newest generation of DSL systems crosstalk is the dominant source of performance degradation. Many crosstalk cancellation schemes have been proposed. These schemes typically employ some form of coordination between modems and lead to large performance gains. The use of crosstalk cancellation means that power allocation should be viewed as a multiuser problem. In this paper we investigate optimal (i.e. capacity maximizing) power allocation in DSL systems which employ coordination to facilitate crosstalk cancellation. By exploiting certain properties of the DSL channel it is shown that power allocation can be simplified considerably. The result has each user waterfilling against the background noise only, explicitly ignoring the interference from other users. We show this to be near-optimal for upstream DSL when central office (CO) modems are coordinated. Compared with conventional waterfilling which is done against the background noise and interference, the performance gains are significant." @default.
- W1501474675 created "2016-06-24" @default.
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- W1501474675 date "2004-07-09" @default.
- W1501474675 modified "2023-09-23" @default.
- W1501474675 title "Simplified power allocation for the DSL multi-access channel through column-wise diagonal dominance" @default.
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- W1501474675 doi "https://doi.org/10.1109/ispa.2003.1296354" @default.
- W1501474675 hasPublicationYear "2004" @default.
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