Refining worst-case crosstalk models for the next generation broadband over copper

Acatauassu, Diogo; Costa, João Crisóstomo Weyl Albuquerque

doi:10.1109/imoc.2017.8121067

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…where L is the cable length in meters, K xf is a cable dependent parameter derived from the FEXT measurements given in dB, f is the frequency in Hz, f 0 and L 0 are the reference frequency and reference length, respectively, which are set to 100 MHz and 1 m considering the cable dimensions and frequency band plans adopted in MGfast [8], and H(f ) is the channel transfer function (frequency response) of the disturbing transmitter. The estimation procedure for finding the value of K xf was based on a genetic algorithm routine.…”

Section: Modeling Resultsmentioning

confidence: 99%

“…Experimental results show that the Bob Smith termination provides substantial benefit in terms of reducing EMI in this kind of measurement procedure, allowing obtaining reliable measured data. Consequently, with reliable data, crosstalk modeling can be performed [6], [7], [8], which allows simulation studies to predict the transmission behavior of metallic loops under different conditions. Moreover, crosstalk models can also be used for testing new signal processing algorithms that will directly impact the development and evolution of the modern MGfast network transceivers.…”

Section: Introductionmentioning

confidence: 99%

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Crosstalk Measurement and Modeling for 5G Fixed Broadband Access Networks

Acatauassu,

Rodrigues,

Costa

2023

Anais Do XLI Simpósio Brasileiro De Telecomunicações E Processamento De Sinais

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Crosstalk is the main interference limiting highspeed data transmission over short twisted-pair cables, such as the ones planned to be used in the 5 th 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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Section: Modeling Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Crosstalk Measurement and Modeling for 5G Fixed Broadband Access Networks

Acatauassu,

Rodrigues,

Costa

2023

Anais Do XLI Simpósio Brasileiro De Telecomunicações E Processamento De Sinais

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“…Therefore, multi-pair cable measurement for direct and crosstalk channels is unavoidable for copper-based future access technologies. The method for refining the parameters of 1% worst-case crosstalk model is presented in [17], where CAT-5 cable is characterized for 212 MHz channel bandwidth. Cable measurements for Phantom mode (PM) transmission over frequencies up to 300 MHz are presented in [18], where the 50 m CAT-5e cable is characterized for IL and crosstalk.…”

Section: Introductionmentioning

confidence: 99%

Multi-Pair Cable Measurements for 5G Indoor Service Provisioning

2021

J-NaNA

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This paper considers the 5G new radio (NR) indoor service provisioning scenario where the CPRI link terminates at remote radio unit (RRU) in the building and multi-pair cable, i.e. CAT-5, is used to provide connectivity between distributed antenna unit (DAU) and RRU. The paper focuses on the de-tailed methodology for multi-pair copper channel measurement including measurement equipment specifications, their respective settings, measurement parameters i.e. characteristics impedance, insertion loss (IL), far-end-crosstalk (FEXT) and near-end-crosstalk (NEXT). The measurements include the cables for next-generation multi-pair system, where multi-pair cables, i.e. CAT-5 cables, are used from the RRU to the DAUs in a building. Conventionally, many multi-pair cables share the same duct in a building and interfere with each other, therefore two parallel multi-pair CAT-5 cables of 50m each are considered for the measurement scenario. This setup result in 4 twisted pairs terminate at each DAU and this configuration is termed as next-generation multi-pair MIMO (NGMM). The number of twisted pairs is increased by using the Phantom mode circuit connected to the opposite ends of each CAT-5 cable and the resulting configuration is called next-generation multi-pair super MIMO (NGMSM). The cable parameters have been measured for frequencies up to 1 GHz and 250 MHz for NGMM and NGMSM, respectively. DL data rate of each configuration is examined by applying conventional block diagonalization.

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Price of Fairness in Digital Subscriber Line Systems Using Dynamic Spectrum Management

Forouzan

Shahtalebi

2021

IEEE Trans. Commun.

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Refining worst-case crosstalk models for the next generation broadband over copper

Cited by 3 publications

References 12 publications

Crosstalk Measurement and Modeling for 5G Fixed Broadband Access Networks

Crosstalk Measurement and Modeling for 5G Fixed Broadband Access Networks

Multi-Pair Cable Measurements for 5G Indoor Service Provisioning

Price of Fairness in Digital Subscriber Line Systems Using Dynamic Spectrum Management

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