Alien Crosstalk Mitigation in Vectored DSL Systems for Backhaul Applications

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Executive Summary

The performance of Digital Subscriber Line (DSL) systems, such as ADSL and VDSL is limited by crosstalk. Suppression of in-domain far-end self crosstalk using vectoring technology enables very high bidirectional data rates over twisted-pairs of copper wires. However, the performance of vectored DSL systems is severely degraded in the presence of alien or out-of-domain crosstalk that arises from sources that lie outside the vectored DSL system and share the same cable binder. In this paper, the authors propose a practical, non-iterative, high performance algorithm for alien crosstalk mitigation.

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