Impulsive noise suppression in OFDM based communication systems

Zhidkov, S.V.

doi:10.1109/tce.2003.1261179

Cited by 153 publications

(71 citation statements)

References 9 publications

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“…A suppression technique of impulsive noise in OFDM receivers was proposed in [6]. The technique is based on a frequency-domain approach where impulsive noise is compensated for after OFDM demodulation using (FFT).…”

Section: B Frequency-domain Suppression Methodsmentioning

confidence: 99%

“…In this section we provide a brief overview about this technique. More details are available in [6]. In the receiver side of OFDM system, the signal in (5) can be expressed, after channel equalization and DFT demodulation, as:…”

Section: B Frequency-domain Suppression Methodsmentioning

confidence: 99%

“…Nevertheless, if mitigation techniques are not employed, impulsive noise can still have a significant effect in the performance of OFDM systems, especially in a medium like power lines. Different techniques for impulsive noise mitigation have been discussed in the literature [3][5] [6] . Due to their simplicity, nonlinearity techniques are often used in practical applications for impulsive noise mitigation.…”

Section: Proposed Technique For Impulsive Noise Mitigationmentioning

confidence: 99%

“…An overview of three simple nonlinearity techniques including clipping, blanking and clipping/blanking is given in the following subsection. A frequency-domain technique for impulsive noise suppression that was proposed by Zhidkov [6] is also explained briefly. Our proposed technique for impulsive noise mitigation in OFDM systems combines time-domain techniques with the above mentioned frequencydomain mitigation technique.…”

Section: Proposed Technique For Impulsive Noise Mitigationmentioning

confidence: 99%

See 3 more Smart Citations

Joint Time-domain/Frequency-domain Impulsive Noise Reduction in OFDM-based Power Line Communications

Al-Mawali

Sadik

Hussain

2008

2008 Australasian Telecommunication Networks and Applications Conference

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Abstract-Impulsive noise is one of the major challenges in power line communications and can cause serious problems in OFDM-based PLC systems. In this paper, we propose a combined Time-domain/Frequency-domain technique for impulsive noise reduction in OFDM-based PLC systems. The performance of the proposed technique is studied against well known time-domain nonlinearities by means of computer simulations. The obtained simulation results show that the Combined TD/FD technique performs better than practically used nonlinearities and can reduce the adverse effect of impulsive noise significantly.

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Section: B Frequency-domain Suppression Methodsmentioning

confidence: 99%

Section: B Frequency-domain Suppression Methodsmentioning

confidence: 99%

Section: Proposed Technique For Impulsive Noise Mitigationmentioning

confidence: 99%

Section: Proposed Technique For Impulsive Noise Mitigationmentioning

confidence: 99%

See 2 more Smart Citations

Joint Time-domain/Frequency-domain Impulsive Noise Reduction in OFDM-based Power Line Communications

Al-Mawali

Sadik

Hussain

2008

2008 Australasian Telecommunication Networks and Applications Conference

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“…When the propagation channel is contaminated by such noise, an OFDM system performs better than a single carrier system because of its time-diversity [10]. The performance can be further improved by estimating impulsive noise terms on a frequency domain and subtracting them from the equalizer output [11], or by incorporating error-correcting-type codes for canceling impulsive noise [12]. However, when there is a frequency-selective fading in the channel, reliable detection of symbols carried by the faded subcarriers becomes difficult.…”

Section: Impulsive Noise Analysismentioning

confidence: 99%

A Block Transmission Method for Converting a Non-Gaussian Channel into Parallel Gaussian Noise Channels

Murakami¹

2013

IJCCE

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Abstract-In many communication systems, information carrying symbols are transmitted in blocks with guard intervals between blocks for avoiding inter-block interference. This paper proposes a block transmission system that can be decomposed into a set of parallel subblock transmission systems having additive white Gaussian noise (AWGN) channels with equal noise powers even when the channel additive noise is non-Gaussian. The block transmission system has the advantages that standard signal design, block codes, and symbol detection methods for an AWGN channel are easily incorporated into the block transmission system and that the system is easily implemented by FFT processors.

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Broadband and Narrow‐Band Noise Modeling in Powerline Communications

Shongwe

Ferreira

Vinck

2015

Wiley Encyclopedia of Electrical and Electronics Engineering

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This article gives an overview of noise modeling of the two most problematic types of noise in powerline communications (PLC), namely, impulse noise (broadband noise) and frequency disturbers (narrow‐band interference (NBI)). The models for these two types of noise are studied for orthogonal frequency‐division multiplexing (OFDM) systems. The first part of the article looks at several impulse noise models in the literature. A demonstration of the effects of impulse noise on OFDM, using the Middleton Class A model, is given. Methods of combating impulse noise are also studied. In the second part, of the article, we focus on narrow‐band interference modeling and also show how NBI affects OFDM systems. The main focus of NBI is on presenting a detailed NBI model because NBI modeling has not been given much attention in the literature. In our discussion of the NBI model, we show that, with some assumptions, the NBI model and the Middleton Class A model can be similar.

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Impulsive noise suppression in OFDM based communication systems

Cited by 153 publications

References 9 publications

Joint Time-domain/Frequency-domain Impulsive Noise Reduction in OFDM-based Power Line Communications

Joint Time-domain/Frequency-domain Impulsive Noise Reduction in OFDM-based Power Line Communications

A Block Transmission Method for Converting a Non-Gaussian Channel into Parallel Gaussian Noise Channels

Broadband and Narrow‐Band Noise Modeling in Powerline Communications

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