Modeling and evaluation of the indoor power line transmission medium

Cañete, Francisco Javier; Cortes, José A.; Díez, Luis; Entrambasaguas, J.T.

doi:10.1109/mcom.2003.1193973

Cited by 62 publications

(47 citation statements)

References 4 publications

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“…Once the devices have been modeled as loads associated to a certain outlet, the transmission and reception points completely determine the channel response. Even more, if devices behavior is known, it is possible to generate feasible PLC channels from actual devices measurements and a good characterization of the wiring [3].…”

Section: Indoor Power Network Structurementioning

confidence: 99%

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Analysis of the cyclic short-term variation of indoor power line channels

Corripio

Arrabal

Río

et al. 2006

IEEE J. Select. Areas Commun.

211

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Abstract-The purpose of this paper is to analyze the properties of indoor power line communications channels when they are used for broadband transmission. It will be shown that these channels exhibit a short-term variation, due to the fact that high-frequency parameters of electrical devices depend on the instantaneous amplitude of mains voltage. This phenomenon leads to a channel model proposal based on a linear periodically time-varying system and cyclostationary random noise. A measurement system, designed to capture these time variations in real power networks, and some of the most significant results obtained with it, are presented. In addition, a statistical analysis of the measurements performed in several indoor power line scenarios is included, so that the relevance of time variations in actual channels can be evaluated.Index Terms-Broadband communication, cyclostationary noise, frequency response, home appliances measurement, linear periodically time-varying (LPTV) systems, power line communication (PLC), time-varying channels.

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Section: Indoor Power Network Structurementioning

confidence: 99%

“…The main goal of this paper is the characterization of the high-frequency properties of indoor power lines, putting emphasis on their short-time variation. Thus, this work tries to complement previous ones that analyze channel performance obviating this aspect [2], [3], [5]- [7]. This paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the cyclic short-term variation of indoor power line channels

Corripio

Arrabal

Río

et al. 2006

IEEE J. Select. Areas Commun.

211

View full text Add to dashboard Cite

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“…According to this, Table 1 shows approximate values of the optimum cyclic prefix lengths. It can also be observed that the most appropriate number of carriers is N = 2 13 , although the averaged bit-rate loss is still below 3.5% for N = 2 12 . In a 25 MHz frequency band, N = 2 13 results in a carrier bandwidth of 3.1 kHz.…”

Section: Selection Of the Modulation Parametersmentioning

confidence: 96%

“…Hence, enlarging the cyclic prefix improves the data rate only if the power of the remaining distortion due to the frequency selectivity stays much greater than the noise and the distortion caused by the channel time variation. Once the contribution of the latter terms dominates, lengthening the cyclic prefix is counterproductive because the OFDM symbol rate is reduced without profit [12]. Therefore, there exist optimum values for both the number of carriers and the cyclic prefix length.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of OFDM modulation on indoor broadband PLC channels

Cortes

Díez

Cañete

et al. 2011

EURASIP J. Adv. Signal Process.

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Indoor broadband power-line communications is a suitable technology for home networking applications. In this context, orthogonal frequency-division multiplexing (OFDM) is the most widespread modulation technique. It has recently been adopted by the ITU-T Recommendation G.9960 and is also used by most of the commercial systems, whose number of carriers has gone from about 100 to a few thousands in less than a decade. However, indoor power-line channels are frequency-selective and exhibit periodic time variations. Hence, increasing the number of carriers does not always improves the performance, since it reduces the distortion because of the frequency selectivity, but increases the one caused by the channel time variation. In addition, the long impulse response of power-line channels obliges to use an insufficient cyclic prefix. Increasing its value reduces the distortion, but also the symbol rate. Therefore, there are optimum values for both modulation parameters. This article evaluates the performance of an OFDM system as a function of the number of carriers and the cyclic prefix length, determining their most appropriate values for the indoor power-line scenario. This task must be accomplished by means of time-consuming simulations employing a linear time-varying filtering, since no consensus on a tractable statistical channel model has been reached yet. However, this study presents a simpler procedure in which the distortion because of the frequency selectivity is computed using a time-invariant channel response, and an analytical expression is derived for the one caused by the channel time variation.

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“…The results of the measurements, published in [9] and [17], show the value of characteristic impedance 80 -90 Ω, which corresponded with our model. On the other hand, in [18] the value 200 Ω was introduced for characteristic impedance, which corresponded with the FTW PLC model.…”

Section: Comparison Of the Calculations Of Primary Parametersmentioning

confidence: 99%

Analysis and Experimental Evaluation of Power Line Transmission Parameters for Power Line Communication

Mlýnek

Misurec

Koutný

et al. 2015

Measurement Science Review

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The article describes a way of evaluating the power line channel frequency response and input impedance by means of the linear time-invariant (LTI) power line generator. Two possible methods are introduced for the calculation of primary parameters: the first method depends on the physical realization and physical dimension of the cable, and the second method is derived from the data provided by typical electrical cable manufacturers. Based on these methods, a comparison of transfer functions was made. This is followed by measurement evaluation and numerical verification on a simple topology.

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Modeling and evaluation of the indoor power line transmission medium

Cited by 62 publications

References 4 publications

Analysis of the cyclic short-term variation of indoor power line channels

Analysis of the cyclic short-term variation of indoor power line channels

Performance analysis of OFDM modulation on indoor broadband PLC channels

Analysis and Experimental Evaluation of Power Line Transmission Parameters for Power Line Communication

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