DSL and PLC Co-Existence: An Interference Cancellation Approach

Ali, Khaled; Messier, Geoffrey G.; Lai, Stephen W.

doi:10.1109/tcomm.2014.2347279

Cited by 21 publications

(15 citation statements)

References 20 publications

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“…There are several areas that are currently being investigated for the improvement of the PHY layer. The main ones are: channel coding and signal processing for mitigating impulsive noise and interference [114], [118]; synchronization, channel estimation and equalization [119], [16]; transmission schemes that can allow coexistence at the PHY layer between different PLC systems [54], between high speed PLC systems together with sensor PLC networks [120] and between PLC systems and DSL systems [121], [122]; adaptation and resource allocation for maximum spectral efficiency, e.g., bit loading [16,Ch. 6] or adaptation and allocation of the time/frequency resources in multicarrier systems [123], [124]; cooperation and relaying to extend coverage [125], [126]; diversity combining techniques that mix PLC with wireless transmission [127].…”

Section: Phy Layer Improvementsmentioning

confidence: 99%

State of the Art in Power Line Communications: From the Applications to the Medium

Cano

Pittolo

Malone

et al. 2016

IEEE J. Select. Areas Commun.

207

114

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In recent decades, power line communication has attracted considerable attention from the research community and industry, as well as from regulatory and standardization bodies. In this article we provide an overview of both narrowband and broadband systems, covering potential applications, regulatory and standardization efforts and recent research advancements in channel characterization, physical layer performance, medium access and higher layer specifications and evaluations. We also identify areas of current and further study that will enable the continued success of power line communication technology.essentially concerned with coexistence with other systems that also use the power grid (i.e. machines and appliances that draw electricity) and wireless systems operating in the same frequency bands as PLC. The frequency range used for today's PLC solutions starts as low as 125 Hz and reaches as high as 100 MHz. A useful classification of PLC systems according to frequency bands has been introduced in [28]: it distinguishes between ultra-narrowband (UNB), narrowband (NB) and broadband (BB) PLC systems, operating between about 125-3000 Hz, 3-500 kHz and 1.8-100 MHz, respectively. Most recent developments in standardization and regulation activities over the past 20 or so years apply to NB and BB PLC systems, and we will focus on these in the following.

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Section: Phy Layer Improvementsmentioning

confidence: 99%

State of the Art in Power Line Communications: From the Applications to the Medium

Cano

Pittolo

Malone

et al. 2016

IEEE J. Select. Areas Commun.

207

114

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“…Cancellation of alien noise in xDSL receivers has attracted significant interest recently [1] [2] [3] [4]. Sources of electromagnetically coupled alien noises include PLC modems, appliances (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Sources of electromagnetically coupled alien noises include PLC modems, appliances (e.g. treadmill) and switching power supplies [5] [2]. Mitigating the impact of these noises by cancellation can be done using an additional sensor, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…The frequency domain per-tone model of cancellation alluded to in [4] [9] [2], has low-complexity, easily incorporates decision-directed estimation and hence faster training [8] and implementation convenience. In the per-tone model, it is assumed that the alien noise in CM undergoes a circular convolution with the CM-DM coupling function, while in reality the convolution is linear since the alien noise does not have a cyclic structure.…”

Section: Introductionmentioning

confidence: 99%

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On low complexity per-tone common mode sensor based alien noise cancellation for downstream VDSL

Ahuja

Biyani

Prasad

2017

2017 IEEE International Conference on Communications (ICC)

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For xDSL systems, alien noise cancellation using an additional common mode sensor at the downstream receiver can be thought of as interference cancellation in a Single Input Dual Output (SIDO) system. The coupling between the common mode and differential mode can be modelled as an LTI system with a long impulse response, resulting in high complexity for cancellation. Frequency domain per-tone cancellation offers a low complexity approach to the problem besides having other advantages like faster training, but suffers from loss in cancellation performance due to approximations in the per-tone model. We analyze this loss and show that it is possible to minimize it by a convenient post-training "delay" adjustment. We also show via measurements that the loss of cancellation performance due to the per-tone model is not very large for real scenarios.

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“…The issue of whether PLC can create harmful interference to DSL or not has been addressed for example in [21]- [25], see also see the excellent bibliographic review in [26]. The goal of available studies was mostly to understand the general effect of PLC interference on DSL, especially its dependency on cable topologies (e.g., length, separation, load, twisting) and the effectiveness of interference mitigation techniques.…”

Section: Introductionmentioning

confidence: 99%

PLC-to-DSL Interference: Statistical Model and Impact on VDSL2, Vectoring, and G.Fast

Galli

Kerpez²,

Mariotte

et al. 2016

IEEE J. Select. Areas Commun.

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Newly available standards for broadband access using Digital Subscriber Lines (DSL) have a high degree of spectrum overlap with home networking technologies using broadband Power Line Communications (BB-PLC) and this overlap leads to Electromagnetic Compatibility issues that may cause performance degradation in DSL systems. This paper studies the characteristics of measured PLC-to-DSL interference and presents novel results on its statistical characterization. The frequency-dependent couplings between power line cables and twisted-pairs are estimated from measurements and a statistical model based on a mixture of two truncated Gaussian distributions is set forth. The proposed statistical model allows the accurate evaluation of the impact of BB-PLC interference on various DSL technologies, in terms of both average and worst-case impacts on data rate. This paper further provides an extensive assessment of the impact of PLC-to-DSL interference at various loop lengths and for multiple profiles of Very-high speed Digital Subscriber Lines 2 (VDSL2), Vectored VDSL2 (V-VDSL2), and G.fast. The results of this paper confirm that the impact of PLC interference varies with loop length and whether Vectoring is used or not. Furthermore, the average impact is found to be generally small but strong couplings can lead to substantial degradation of DSL.

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DSL and PLC Co-Existence: An Interference Cancellation Approach

Cited by 21 publications

References 20 publications

State of the Art in Power Line Communications: From the Applications to the Medium

State of the Art in Power Line Communications: From the Applications to the Medium

On low complexity per-tone common mode sensor based alien noise cancellation for downstream VDSL

PLC-to-DSL Interference: Statistical Model and Impact on VDSL2, Vectoring, and G.Fast

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