Narrow-band interference model for OFDM systems for powerline communications

Shongwe, Thokozani; Papilaya, Victor N.; Vinck, A. J. Han

doi:10.1109/isplc.2013.6525862

Cited by 15 publications

(9 citation statements)

References 6 publications

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“…The PLC channel is harsh and plagued with several types of non‐Gaussian noises as it is shared with many other electrical systems. The noises can be categorized as colored background noise (BN), narrowband interference (NBI), and IN …”

Section: System Modelsmentioning

confidence: 99%

Time diversity scheme and adaptive signal clipping with blanking applied to G3 systems for narrowband power‐line communications

Rivard

Cheng

2019

Int J Communication

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Summary In this paper, an investigation into the behavior of modern narrowband power‐line communication systems when concatenated with both a fountain code named Luby transform code and a combination of nonlinear preprocessing techniques called signal clipping with blanking is presented. The new systems can be used in applications such as the automatic meter reading component of smart grid technology. Testing is performed on a range of systems provided by the G3 standard and the results show that a bit error rate improvement can be achieved with the correct encoder/decoder settings. The recommended settings include an adaptive technique that uses Gaussian elimination for Luby transform code decoding and code rates that depend on the system specifications used. From there, it is shown that a further improvement is achieved when both the Luby transform code and adaptive signal clipping/blanking based on signal power are combined. It is found that these modifications present a complexity trade‐off, which is higher on the receiver side. This added complexity can be well‐tolerated in automatic meter‐reading systems because of the star topology and asymmetric nature of the network, which has a centralized agent acting as a receiver that collects data from various transmitter nodes.

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Section: System Modelsmentioning

confidence: 99%

Time diversity scheme and adaptive signal clipping with blanking applied to G3 systems for narrowband power‐line communications

Rivard

Cheng

2019

Int J Communication

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“…Let us consider an NBI as a discrete-time interferer constituted by Ω single-tone signals, which based on [6] is defined as…”

Section: Problem Formulationmentioning

confidence: 99%

“…For the sake of simplicity, this modeling assumes that the NBI is constituted by multiple single-tone impulses located exactly on the bin of the DFT. For a more realistic approach, the NBI can be modeled as in [6]. At the receiver, the NBI goes through the 2N -point DFT and appears on the HS-OFDM spectrum with power at the k th subchannel expressed by…”

Section: Problem Formulationmentioning

confidence: 99%

“…Among the PLC noise components, the NBI, which is modeled by [6], is the one that have been given less attention in the literature. Nevertheless, it can not be neglected, since the NBI has high power in a short frequency bandwidth, which increases significantly the bit error probability in adjacent subchannels impaired by NBI and, as consequence, causes bit error bursts.…”

Section: Introductionmentioning

confidence: 99%

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Narrow-band interference error correction in coded OFDM-based PLC systems

Oliveira

Colen

Ribeiro

et al. 2016

2016 International Symposium on Power Line Communications and Its Applications (ISPLC)

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This work analyzes different error-correcting schemes for combating the effects of narrow-band interference in coded orthogonal frequency-division multiplexing-based narrowband power line communication systems. In this sense, we analyze an error-correcting scheme widely acclaimed in the literature, which is constituted by the concatenation of a Reed-Solomon (RS) code, a convolutional code and an bit interleaver, and an alternative error-correcting scheme with less computational complexity composed of an RS code concatenated with a short block code. Base on a comparative performance analysis of both error-correcting schemes in terms of bit error rate, we conclude that the alternative error-correcting scheme offers satisfactory performance in terms of bit error rate and considerable computational complexity reduction when compared to the usual one.Index Terms-Narrow-band interference, error-correcting coding, orthogonal frequency-division multiplexing, power line communication.

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“…For the 8 ms inter arrival time, the width of impulsive noise varies from 0.5 ms to 2.8 ms. For a 10 ms inter-arrival time, the width of impulsive noise varies from 0.625 ms to 3.5 ms. During each burst, noise is assumed to be large enough to wipe out a certain number of received OFDM symbols. The authors in [12] proposed a narrowband interference noise model for PLC, this model is specifically adapted for OFDM systems.…”

Section: ) Power Line Transfer Functionmentioning

confidence: 99%

Performance of Gabidulin codes for narrowband PLC smart grid networks

Kabore¹,

Meghdadi²,

Cances³

et al. 2015

2015 IEEE International Symposium on Power Line Communications and Its Applications (ISPLC)

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This paper studies the Power Line Communications (PLC) and tackles the problem of criss-cross noise. In the literature, it is proposed to use Reed-Solomon code concatenated with convolutional code associated with an interleaver. For instance in the context of smart grid, some standards like G3 and IEEE 1901.2 use this scheme. However, the narrowband interference and impulsive noise, which are typical in the PLC, make these schemes inefficient. In this paper we propose to replace the Reed-Solomon code by a kind of rank metric code (Gabidulin code) that can correct a whole line or row of a code word, which is arranged in a matrix. Using OFDM modulation, the columns of code matrix contain the OFDM symbols. We show by simulation that the proposed system outperforms the traditional scheme where the PLC channel is subjected to both impulsive noise and narrowband interference.

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Narrow-band interference model for OFDM systems for powerline communications

Cited by 15 publications

References 6 publications

Time diversity scheme and adaptive signal clipping with blanking applied to G3 systems for narrowband power‐line communications

Time diversity scheme and adaptive signal clipping with blanking applied to G3 systems for narrowband power‐line communications

Narrow-band interference error correction in coded OFDM-based PLC systems

Performance of Gabidulin codes for narrowband PLC smart grid networks

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