Simple and Causal Copper Cable Model Suitable for G.fast Frequencies

Acatauassu, Diogo; Höst, Stefan; Lu, Chenguang; Berg, Miguel; Klautau, Aldebaro; Börjesson, Per Ola

doi:10.1109/tcomm.2014.2364585

Cited by 27 publications

(37 citation statements)

References 20 publications

(35 reference statements)

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“…Since we are working with (arithmetic and geometric) mean values of persubcarrier attenuation values, for the sake of fair comparison among the lines, we should always compare vectors with equal lengths. For this purpose we have estimated the missing Hlog values by means of interpolation/extrapolation with the first order twisted-pair attenuation model as specified in [7].…”

Section: Testbed Resultsmentioning

confidence: 99%

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Prequalification of VDSL2 customers for G.fast services

Statovci

Wolkerstorfer

Drakulic

2017

2017 25th European Signal Processing Conference (EUSIPCO)

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Abstract-In the near future, digital subscriber line (DSL) network operators will start deploying G.fast technology to stay competitive in the broadband market. G.fast provides data rates of up to 1 Gbps, which is a 10x higher data rate than offered by the widely deployed very high speed DSL 2 (VDSL2) technology. In this paper we propose a novel algorithm to prequalify existing VDSL2 customers for G.fast services. Motivated by testbed and field trial results we also propose a new loop attenuation parameter for prequalification purposes, namely the geometric loop attenuation (GeoLATN) instead of the "classical" loop attenuation (LATN). G.fast testbed experiments show that on average the difference between the attainable net data rates (AttNDR) prequalfied by our algorithm and reported by G.fast systems is 5%. Furthermore, on average the GeoLATN-based prequalification outperforms the LATN-based prequalification by 5% in terms of AttNDR.

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Section: Testbed Resultsmentioning

confidence: 99%

“…For this purpose we could use any of the twistedpair cable models suitable for G.fast e.g., as specified in [7]. However, the best prequalification results, based on the empirical testbed and field trial data, were obtained by using a generalization of the simple twisted-pair square root model given by Hlog…”

Section: B Prequalification Algorithmmentioning

confidence: 99%

Prequalification of VDSL2 customers for G.fast services

Statovci

Wolkerstorfer

Drakulic

2017

2017 25th European Signal Processing Conference (EUSIPCO)

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“…According to the results presented in [24], [26], the proposed KM1, KM2, and KM3 models are suitable for frequencies of hundreds of MHz.…”

Section: Introductionmentioning

confidence: 91%

“…On the other hand, the argument z (in (Eq. (24)) of a proposed arsinh model (21), (22) for G.fast frequencies with f between 2 MHz and 250 MHz is lower than 1 (z << 1), so the calculation of a logarithm in (24) can be further simplified. In order to compare and demonstrate the computational complexity of all examined models in practice, internal native CPU timing functions implemented in the MATLAB environment were used.…”

Section: Evaluation Of Computational Complexity Of Proposed Arsinh Modelmentioning

confidence: 99%

Accurate low complexity modeling of twisted pairs suitable for G.fast frequencies

Lafata

2015

Int J Communication

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SUMMARYAs the higher and higher frequency bands of existing metallic cables in access networks are being continuously exploited by modern transmission technologies, such as the G.fast, the necessity of providing accurate and suitable modeling of their transmission characteristics is evident. Therefore, this paper is focused on modeling of a propagation constant of twisted pairs and metallic cables at high frequencies up to 250 MHz, and an innovative arsinh model is proposed and described. This new model is based on an idea of adopting inverse hyperbolic sine function for modeling of both secondary line coefficients, attenuation constant and phase constant, and its main motivation is to provide their accurate estimations for G.fast frequencies up to 250 MHz for various types of metallic cables while maintaining a low computational complexity. The proposed model was compared with numerous characteristics measured for various real metallic cables as well as with several existing models in order to illustrate its potential. The results, which are presented within this paper, clearly illustrate that the proposed arsinh model generally outperforms existing standard models based on the equal number of required parameters.

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“…The ΔL air varies for the same deployed cable length with different G [u] available. The cable attenuation used to obtain these curves is calculated using the BT-CAD55 model, commonly employed to estimate capacity in DSL system design [9].…”

Section: A In-band Signal Amplification G [U]mentioning

confidence: 99%

LTE over copper — Potential and limitations

Huang

Medeiros

Fonseca

et al. 2015

2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)

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The densification of mobile networks in order to meet increased capacity demands is ongoing, needed and costly. A few papers have been published based on the insight that the fixed broadband networks offer a multitude of sites, for instance our homes, for potential small cell deployment providing backhaul capacity and power without site costs. However, in order to reach economical large-scale benefits, we explore the case when radio systems are deployed in coexistence with DSL. In this paper, we establish the feasibility of such a concept under constraints invoked by state-of-the-art and emerging systems (3GPP, VDSL2 and G.fast) and make statements about the required architecture. We also point out that the enthusiasm of previously published results should be lowered a notch.

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Simple and Causal Copper Cable Model Suitable for G.fast Frequencies

Cited by 27 publications

References 20 publications

Prequalification of VDSL2 customers for G.fast services

Prequalification of VDSL2 customers for G.fast services

Accurate low complexity modeling of twisted pairs suitable for G.fast frequencies

LTE over copper — Potential and limitations

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