Time-Domain Precoding for LTE-over-Copper Systems

Yezi Huang, Eduardo Medeiros, Thomas Magesacher, Stefan Höst, Chenguang Lu, Per-Erik Eriksson, Per Ödling, Per Ola Börjesson

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review


Crosstalk cancellation is a crucial issue for traditional digital subscriber line systems. For LTE-over-copper systems, however, the need for crosstalk cancellation varies depending on the analog fronthauling architecture and its parameters. A crosstalk handler that is decoupled as much as possible from the rest of the system architecture is thus preferred. Therefore, we propose a time-domain precoding scheme specifically in downstream direction to separate the precoding unit from the LTE signal flow, and perform crosstalk cancellation in an on-demand manner. Estimation of all direct and crosstalk paths is assisted by LTE cell-specific reference signals. The time-domain precoder transforms the interference channel into a crosstalk-free channel with identical direct paths, which allows for low-complexity inter-symbol interference mitigation. We evaluate the concept in terms of signal-to-noise ratio provided for LTE signals using measured wireline channel data.
Original languageEnglish
Title of host publication2016 IEEE International Conference on Communications (ICC)
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Number of pages6
ISBN (Electronic)978-1-4799-6664-6 , 978-1-4799-6665-3
Publication statusPublished - 2016 Jul
EventIEEE International Conference on Communications, 2016 - Kuala Lumpur, Malaysia
Duration: 2016 May 232016 May 27


ConferenceIEEE International Conference on Communications, 2016
Abbreviated titleICC 2016
CityKuala Lumpur

Subject classification (UKÄ)

  • Telecommunications


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