The fourth generation broadband concept

Ödling, Per; Magesacher, Thomas; Höst, Stefan; Börjesson, Per Ola; Berg, Miguel; Areizaga, Enrique

doi:10.1109/mcom.2009.4752678

Cited by 71 publications

(54 citation statements)

References 9 publications

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“…This coupled with the fact that the crosstalk channel coefficients are small due to the CWDD property accounts for the surprisingly fast convergence for the OSAGE algorithm. (17), (21), and (25) are derived by considering the maximum possible values of the CWDD parameter and FEXT, these are tight in most of the situations. This can be verified from the fact that the CWDD parameter as well as the FEXT (hence SNR gain) is not very sensitive to the variation of line length (except at shorter line length as shown in Figure 2).…”

Section: Remarkmentioning

confidence: 99%

“…The trade-off between data rate and complexity can be realized by varying these parameters. Thus, the bounds in (17), (21), and (25) are useful tools for theoretical analysis of the performance of the considered canceler. Moreover, the bounds depend on local parameters such as binder size, CWDD parameter, and SNR awgn i , and not on the binder configuration.…”

Section: Remark 4 Since the Bounds Inmentioning

confidence: 99%

“…We consider correlation coefficient values for the alien noise components in the various TPs, in the range of 0.50-0.99. We have also taken an alien power of −100 dBm/Hz as it lies between the levels of −120 dBm/Hz (alien-free environment) and −80 dBm/Hz (indicating a very strong alien crosstalk) [21]. We assume known covariance matrix R and obtain numerically the parameters γ r and γ t in (43) and | det(R)|.…”

Section: Alien Crosstalk Cancellationmentioning

confidence: 99%

See 2 more Smart Citations

Iterative Receiver Based on SAGE Algorithm for Crosstalk Cancellation in Upstream Vectored VDSL

Zafaruddin

Prakriya

Prasad

2011

ISRN Communications and Networking

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We propose the use of an iterative receiver based on the Space Alternating Generalized Expectation maximization (SAGE) algorithm for crosstalk cancellation in upstream vectored VDSL. In the absence of alien crosstalk, we show that when initialized with the frequency-domain equalizer (FEQ) output, the far-end crosstalk (FEXT) can be cancelled with no more real-time complexity than the existing linear receivers. In addition, the suggested approach does not require offline computation of the channel inverse and thus reduces the receiver complexity. In the presence of alien crosstalk, there is a significant gap between the rate performance of the linear receivers as compared with the single-user bound (SUB). The proposed receiver is shown to successfully bridge this gap while requiring only a little extracomplexity. Computer simulations are presented to validate the analysis and confirm the performance of the proposed receiver.

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Section: Remarkmentioning

confidence: 99%

Section: Remark 4 Since the Bounds Inmentioning

confidence: 99%

Section: Alien Crosstalk Cancellationmentioning

confidence: 99%

See 1 more Smart Citation

Iterative Receiver Based on SAGE Algorithm for Crosstalk Cancellation in Upstream Vectored VDSL

Zafaruddin

Prakriya

Prasad

2011

ISRN Communications and Networking

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“…Most of earlier work on G.Fast focuses on the performance of G.Fast solely or connected by a fibre network [1], [5], [6] and on the planning of the G.Fast solution [7], also based on a fibre connection to the new G.Fast node. In [8] presented as alternative for the fibre connection for the G.Fast node, based on ideas in [9]. The main benefits of this approach is not presented in detail there.…”

Section: Introductionmentioning

confidence: 99%

Advantages of Copper Backhauling for G.Fast Nodes

Phillipson¹,

Brink²

2015

JACN

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Abstract-A next step in bringing high bandwidth over an existing copper infrastructure is Fibre to the Curb, using G.Fast, which prevents a huge investment compared to a full fibre roll out. To save additional costs in this roll out, the existing copper can be reused as backhaul for the new active point of G.Fast, where currently mostly a fibre backhaul is considered. This paper presents the advantages of copper backhauling for G.Fast nodes and studies the planning and expected bandwidth coverage of this Copper Backhaul solution in two cases. These cases show that this solution is a logical next step in the network migration, offering cost saving, flexibility and the needed bandwidth gain for the consumers.Index Terms-Access network planning, next generation broadband, G.Fast performance.

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“…High-speed data transmission over copper wires is a key element of hybrid fiber-copper Internet access networks [1]. Exploiting high bandwidths and non-differential transmission modes, rates in the order Gbit/s can be achieved.…”

Section: Introductionmentioning

confidence: 99%

MTL—A Multi-Wire Transmission Line Modeling Toolbox

Magesacher¹

2013

IJCEE

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Abstract-Emerging wireline transmission systems aspire to deliver rates in the order of Gbit/s over short copper cables by exploiting higher frequencies and non-differential transmission modes. Reliable channel models are a prerequisite for system design and throughput predictions. In this paper, a MATLAB-based multi-wire transmission line modeling toolbox called MTL is presented. Based on Kelvin-model theory, MTL allows modeling of virtually any property (spanning the entire range from electrical properties such as voltages, currents, and impedances to system-level properties such as insertion loss or Shannon capacity) of multi-wire cables with arbitrary wire geometry. Compared to prior art, MTL allows exact computation of the capacitance matrix in a multi-wire system. Examples demonstrate the importance of this feature. IndexTerms-Channel modeling, kelvin model, multi-conductor transmission line modeling, wireline communications.

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The fourth generation broadband concept

Cited by 71 publications

References 9 publications

Iterative Receiver Based on SAGE Algorithm for Crosstalk Cancellation in Upstream Vectored VDSL

Iterative Receiver Based on SAGE Algorithm for Crosstalk Cancellation in Upstream Vectored VDSL

Advantages of Copper Backhauling for G.Fast Nodes

MTL—A Multi-Wire Transmission Line Modeling Toolbox

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