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Channel Models for Twisted Pair Cable Bundles

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Channel Modeling and Physical Layer Optimization in Copper Line Networks

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Abstract

Twisted pair cables used in the access network were not built for the frequencies up to 212 MHz used by G.fast. With increasing frequency, the simplified modeling approach used for VDSL2 does no longer give accurate results because the behavior of twisted pair cables changes. This chapter presents measurement data of twisted pair cables at G.fast frequencies and introduces a MIMO cable binder model for the copper access network in the fiber to the distribution point topology.

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Notes

  1. 1.

    The line impedance converges to the value of \(Z_{0 \infty }\) within the measurement precision at the measured frequencies, as explained in Sect. 2.4.3.

  2. 2.

    More details on single-ended and differential modes of twisted pair cables can be found in Appendix A.9.

  3. 3.

    More details on single-ended and differential mode of twisted pairs can be found in Appendix A.9.

  4. 4.

    For the ITU model, it is one of the derived parameters, \(L_{\text {s}\infty }\) in Eq. (2.8).

  5. 5.

    As indicated, e.g., by Fig. A.6 in Appendix A.5, the impedance converges for typical cables at frequencies below \(10\,\text {MHz}\) to the value of \(Z_{0\infty }\) within the measurement precision.

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Authors and Affiliations

  1. Intel Connected Home Division, Munich, Bayern, Germany

    Rainer Strobel

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  1. Rainer Strobel
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Correspondence to Rainer Strobel .

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Strobel, R. (2019). Channel Models for Twisted Pair Cable Bundles. In: Channel Modeling and Physical Layer Optimization in Copper Line Networks. Signals and Communication Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-91560-9_2

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  • DOI: https://doi.org/10.1007/978-3-319-91560-9_2

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-319-91559-3

  • Online ISBN: 978-3-319-91560-9

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