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Crosstalk Models for Short VDSL2 Lines from Measured 30 MHz Data


In recent years, there has been a growing interest in hybrid fiber-copper access solutions, as in fiber to the basement (FTTB) and fiber to the curb/cabinet (FTTC). The twisted pair segment in these architectures is in the range of a few hundred meters, thus supporting transmission over tens of MHz. This paper provides crosstalk models derived from measured data for quad cable, lengths between 75 and 590 meters, and frequencies up to MHz. The results indicate that the log-normal statistical model (with a simple parametric law for the frequency-dependent mean) fits well up to MHz for both FEXT and NEXT. This extends earlier log-normal statistical modeling and validation results for NEXT over bandwidths in the order of a few MHz. The fitted crosstalk power spectra are useful for modem design and simulation. Insertion loss, phase, and impulse response duration characteristics of the direct channels are also provided.


  1. 1.

    Spectrum Management for Loop Transmission Systems ANSI Standard T1.417-2003, Section A.3.2.1

  2. 2.

    Karipidis E, Sidiropoulos N, Leshem A, Youming L: Experimental evaluation of capacity statistics for short VDSL loops. IEEE Transactions on Communications 2005, 53(7):1119–1122. 10.1109/TCOMM.2005.851626

    Article  Google Scholar 

  3. 3.

    Werner J-J: The HDSL environment [high bit rate digital subscriber line]. IEEE Journal on Selected Areas in Communications 1991, 9(6):785–800. 10.1109/49.93089

    Article  Google Scholar 

  4. 4.

    Kerpez K: Models for the numbers of NEXT disturbers and NEXT loss. Contribution number T1E1.4/99-471, October 1999, available at

    Google Scholar 

  5. 5.

    Leshem A: Multichannel noise models for DSL I: Near end crosstalk. Contribution T1E1.4/2001-227, September 2001, available at

    Google Scholar 

  6. 6.

    Lin SH: Statistical behaviour of multipair crosstalk. Bell System Technical Journal 1980, 59(6):955–974.

    Article  Google Scholar 

  7. 7.

    Norme Française # NF C 93-527-2, July 1991

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Correspondence to E Karipidis.

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Karipidis, E., Sidiropoulos, N., Leshem, A. et al. Crosstalk Models for Short VDSL2 Lines from Measured 30 MHz Data. EURASIP J. Adv. Signal Process. 2006, 085859 (2006).

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  • Information Technology
  • Statistical Model
  • Power Spectrum
  • Impulse Response
  • Quantum Information