Crosstalk Measurement and Modeling for 5G Fixed Broadband Access Networks

Diogo Acatauassu, Roberto Menezes Rodrigues, Joao Weyl Costa

DOI: 10.14209/sbrt.2023.1570907655

Evento: XLI Simpósio Brasileiro de Telecomunicações e Processamento de Sinais (SBrT2023)

Keywords: Bob Smith termination crosstalk fixed broadband Multi-gigabit fast access to subscriber terminals (MGfast)

Abstract

Crosstalk is the main interference limiting high-speed data transmission over short twisted-pair cables, such as the ones planned to be used in the 5th generation (5G) fixed broadband access networks. Due to this fact, it must be accurately measured, characterized and modeled. However, the task of measuring crosstalk coupling functions from short cables is arduous due to the sensitivity of the measurement setup. In this work, we show an application of the Bob Smith termination technique to reduce electromagnetic interference (EMI) in crosstalk measurements using short twisted-pair copper cables. Experiments adopting a typical category 6 (Cat6) cable show that resonant components are reduced from the measured data when the Bob Smith termination is employed in the experimental setup. Then, using reliable measurement data, crosstalk modeling is performed using a 1% worst-case model.

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