Understanding digital subscriber line technology
Understanding digital subscriber line technology
DSL Advances
Implementation and Applications of xDSL Technology
Implementation and Applications of xDSL Technology
Crosstalk channel estimation via standardized two-port measurements
EURASIP Journal on Advances in Signal Processing
Spectrum balancing algorithms for power minimization in DSL networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
A Near-Optimal Linear Crosstalk Canceler for Upstream VDSL
IEEE Transactions on Signal Processing
Autonomous Spectrum Balancing for Digital Subscriber Lines
IEEE Transactions on Signal Processing
The noise and crosstalk environment for ADSL and VDSL systems
IEEE Communications Magazine
Dynamic spectrum management for next-generation DSL systems
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
Vectored transmission for digital subscriber line systems
IEEE Journal on Selected Areas in Communications
Distributed multiuser power control for digital subscriber lines
IEEE Journal on Selected Areas in Communications
EURASIP Journal on Advances in Signal Processing
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The development and assessment of spectrum management methods for the copper access network are usually conducted under the assumption of accurate channel information. Acquiring such information implies, in practice, estimation of the crosstalk coupling functions between the twisted-pair lines in the access network. This type of estimation is not supported or required by current digital subscriber line (DSL) standards. In this work, we investigate the impact of the inaccuracies in crosstalk estimation on the performance of dynamic spectrum management (DSM) algorithms. A recently proposed crosstalk channel estimator is considered and a statistical sensitivity analysis is conducted to investigate the effects of the crosstalk estimation error on the bitloading and on the achievable data rate for a transmission line. The DSM performance is then evaluated based on the achievable data rates obtained through experiments with DSL setups and computer simulations. Since these experiments assume network scenarios consisting of real twisted-pair cables, both crosstalk channel estimates and measurements (for a reference comparison) are considered. The results indicate that the error introduced by the adopted estimation procedure does not compromise the performance of the DSM techniques, that is, the considered crosstalk channel estimator provides enough means for a practical implementation of DSM.