Unger model

The Unger Model is an empirical standard model for near-end crosstalk (NEXT) power spectra as experienced by communication systems over unshielded twisted pair (UTP).

Twisted pair cables are usually grouped together in a binder where they experience crosstalk.

Based on empirical observations, Unger [1] proposed that, at the 1% worst case, the NEXT power spectra

while the NEXT power spectra due to 49 disturbers (full binder) can be bounded by

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