Dealing With Unknown Impedance and Impulsive Noise in the Power-Line Communications Channel

Lopes, Paulo A. C.; Pinto, J. M. M.; Gerald, José A. B.

doi:10.1109/tpwrd.2012.2214065

Cited by 32 publications

(19 citation statements)

References 8 publications

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“…• models based on fitting the pdf of power-line noise samples [13], [17]- [20], [28]; • models based on fitting the PSD of power-line noise [15], [16], [29]- [32];…”

Section: Power-line Noise Modelsmentioning

confidence: 99%

“…Various research results available in the technical literature are evidence that the properties of the noise affecting indoor power-line channels are usually very different from those encountered in their wireless counterparts. In fact, noise is not usually stationary [5]- [11], white [12]- [16], and Gaussian [17]- [20], and should be represented as the superposition of distinct components, characterized by different statistical features. Despite the apparent complexity of noise modeling, various attempts have been made to develop simplified parametric statistical models for this channel impairment.…”

Section: Introductionmentioning

confidence: 99%

“…In particular, cyclostationary models, based on adapting the instantaneous power spectral density (PSD) of channel noise to experimental measurements, have been proposed in [5]- [12], [15], [16]. Other contributions in this research field have aimed at providing an accurate characterization of the probability density function (PDF) of the impulsive component of powerline noise [13], [18]- [20]. It is also worth mentioning that in most of the available technical literature, the parameters of the proposed noise models are extracted from a set of experimental data; then, the impact of such models on the performance of specific PLC systems is assessed by means of computer simulations [9], [11], [13], [18], [19], [21].…”

Section: Introductionmentioning

confidence: 99%

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The Impact of Statistical Noise Modeling on the Error-Rate Performance of OFDM Power-Line Communications

Gianaroli

Pancaldi

Vitetta

2014

IEEE Trans. Power Delivery

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In this paper, the impact of statistical noise modelling on the error performance achieved by orthogonal frequency-division multiplexing (OFDM) over indoor broadband power-line channels is investigated. Different classes of statistical models suitable to represent power-line noise are illustrated and their impact on the error performance of a specific OFDM system is assessed via computer simulations. Numerical results are compared with the error performance provided by the same system in the presence of measured power-line noise; this is evidence that a realistic indication of error performance can be achieved only if the power spectral density of the adopted noise model exhibits a good match with that of the measured noise. In practice, this result can be achieved by modeling the power-line noise as a moving average random process of proper order; however, a satisfying match can be achieved as well if other simple noise models available in the technical literature are adopted

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“…• models based on fitting the pdf of power-line noise samples [13], [17]- [20], [28]; • models based on fitting the PSD of power-line noise [15], [16], [29]- [32];…”

Section: Power-line Noise Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Impact of Statistical Noise Modeling on the Error-Rate Performance of OFDM Power-Line Communications

Gianaroli

Pancaldi

Vitetta

2014

IEEE Trans. Power Delivery

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“…To reduce impulsive noises in channels a master controller was employed to control solar tracker running time. A number of costly techniques were presented and discussed in (Lopes, Pinto and Gerald 2013) and .…”

Section: Introductionmentioning

confidence: 99%

A new power line communication modem design with applications to vast solar farm management

Abid

Ali

Al-Naima

et al. 2013

2013 3rd International Conference on Electric Power and Energy Conversion Systems

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This article presents a new power line communication (PLC) modem design which can control data flow with a new networking strategy to propagate signals for long distance without using extra cabling or signal repeaters. An investigation is also carried on the utilization of the twin core power line cables in vast solar farm for controlling solar trackers and data acquisition purposes. Frequency responses of these power lines are analyzed and tested according to different coupling circuits. A simple design is proposed for PLC modem based on such channel characteristics, data flow control strategy, collision avoidance technique and error detection.

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“…The source of impulsive noise can be switching equipment or lightning. Although OFDM spreads the power of impulsive noise among multiple subcarriers, impulsive noise can still degrade system performance [8].…”

mentioning

confidence: 99%

Deep Clipping for Impulsive Noise Mitigation in OFDM-Based Power-Line Communications

Juwono

Guo

Huang

et al. 2014

IEEE Trans. Power Delivery

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Nonlinear preprocessors, including clipping, blanking, and joint blanking/clipping have been proposed to be employed in orthogonal frequency-division multiplexing systems for mitigating the impulsive noise in power-line communications. In this paper, we propose using a new variant of nonlinear preprocessor, namely, deep clipping, to mitigate the impulsive noise. In contrast to clipping, blanking, and joint blanking/clipping, where one or two thresholds is used to detect if the impulsive noise occurs, and if the impulsive noise occurs how to handle it, deep clipping is characterized by two alternative parameters, namely, a threshold and a depth factor. By optimizing the two parameters, we find that deep clipping achieves better signal-to-noise ratio (SNR) performance than clipping, blanking, and joint blanking/clipping. In addition, we present a mathematical expression for deep clipping and show that the SNR expressions regarding conventional clipping, blanking, and joint blanking/clipping can be easily obtained by using our analytical methods.Index Terms-Deep clipping, impulsive noise, orthogonal frequency-division multiplexing (OFDM), power-line communications (PLC).

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Dealing With Unknown Impedance and Impulsive Noise in the Power-Line Communications Channel

Cited by 32 publications

References 8 publications

The Impact of Statistical Noise Modeling on the Error-Rate Performance of OFDM Power-Line Communications

The Impact of Statistical Noise Modeling on the Error-Rate Performance of OFDM Power-Line Communications

A new power line communication modem design with applications to vast solar farm management

Deep Clipping for Impulsive Noise Mitigation in OFDM-Based Power-Line Communications

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