Fundamentals of statistical signal processing: estimation theory
Fundamentals of statistical signal processing: estimation theory
Understanding digital subscriber line technology
Understanding digital subscriber line technology
Crosstalk models for short VDSL2 lines from measured 30MHz data
EURASIP Journal on Applied Signal Processing
Autonomous Spectrum Balancing for Digital Subscriber Lines
IEEE Transactions on Signal Processing
DSL spectrum management standard
IEEE Communications Magazine
IEEE Communications Magazine
Crosstalk identification in xDSL systems
IEEE Journal on Selected Areas in Communications
A frequency-domain approach to crosstalk identification in xDSL systems
IEEE Journal on Selected Areas in Communications
NEXT and FEXT models for twisted-pair North American loop plant
IEEE Journal on Selected Areas in Communications
Loop makeup identification via single ended testing: beyond mere loop qualification
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
Robust spectrum management for DMT-based systems
IEEE Transactions on Signal Processing
Impact of crosstalk channel estimation on the DSM performance for DSL networks
EURASIP Journal on Advances in Signal Processing
An evolutionary algorithm for improved diversity in DSL spectrum balancing solutions
EURASIP Journal on Advances in Signal Processing
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The emerging multiuser transmission techniques for enabling higher data rates in the copper-access network relies upon accurate knowledge of the twisted-pair cables. In particular, the square-magnitude of the crosstalk channels between the transmission lines are of interest for crosstalk-mitigation techniques. Acquiring such information normally requires dedicated apparatus since crosstalk-channel measurement is not included in the current digital subscriber line (DSL) standards. We address this problem by presenting a standard-compliant estimator for the square-magnitude of the frequency-dependent crosstalk channels that uses only functionality existing in today's standards. The proposed estimator is evaluated by laboratory experiments with standard-compliant DSL modems and real copper access network cables. The estimation results are compared with both reference measurements and with a widely used crosstalk model. The results indicate that the proposed estimator obtains an estimate of the square-magnitude of the crosstalk channels with a mean deviation from the reference measurement less than 3 dB for most frequencies.