On impulse noise and its models

Shongwe, Thokozani; Vinck, A. J. Han; Ferreira, H.C.

doi:10.1109/isplc.2014.6812360

Cited by 76 publications

(59 citation statements)

References 27 publications

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“…For all simulations where there is impulsive noise, we used A = 0.1. There is no need to do simulations for various values of A as this factor does not influence the bit error rate performance of OFDM [25], [26]. The simulation is performed by sending 10 5 data bits through the cascaded (PLC-VLC) channel.…”

Section: Simulation and Resultsmentioning

confidence: 99%

Cascaded PLC-VLC Channel Using OFDM and CSK Techniques

Ndjiongue

Shongwe

Ferreira

et al. 2015

2015 IEEE Global Communications Conference (GLOBECOM)

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This paper puts in Cascade the power line communications (PLC) channel and the visible light communications (VLC) channel, in order to use the PLC channel as backbone for the VLC channel. This combination is suitable for applications in which hybrid PLC-VLC systems are needed. We investigate the behaviour of the cascaded channels for a full link transmission. Quadrature phase shift keying combined with orthogonal frequency division multiplexing (QPSK-OFDM) is used over the PLC channel and color shift keying (CSK) is deployed over the VLC channel to convey the information. Cascaded channel variances are analyzed. Complete simulated bit error rate (BER) is analyzed and presented for multiple scenarii that could occur in the two channels.

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Section: Simulation and Resultsmentioning

confidence: 99%

Cascaded PLC-VLC Channel Using OFDM and CSK Techniques

Ndjiongue

Shongwe

Ferreira

et al. 2015

2015 IEEE Global Communications Conference (GLOBECOM)

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“…Markov chains are therefore used to modify the two aforementioned memory models. The Markov-Middleton model [26] is based on the Middleton Class A model and the Markov-Gaussian model [21,23,27,28] is based on the Bernoulli-Gaussian model [29].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of CDMA/ALOHA Networks in Memory Impulse Channels

Tseng

Wang

et al. 2018

Mathematical Problems in Engineering

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Previous CDMA/ALOHA network performance analysis papers do not consider memory impulse channels. The Markov-Gaussian model can characterize the bursty nature of the memory impulsive noise in some wireless channels and power line communication (PLC) channels. In this paper, we propose the use of the Markov-Gaussian model in the throughput analysis of CDMA/ALOHA networks. The state transition diagram for the throughput analysis has one extra dimension to represent if the impulse noise is present or not. We derive the exact throughput analysis in memory impulse channels with and without channel load sensing protocol (CLSP). The analytic results demonstrate that if the level of the impulsive noise is higher, performance degradation is more and vice versa. Based on the analytic results, we also find the optimal CLSP threshold alpha for various impulse noise conditions. The analytic results of the throughput performance are all matched by the simulation results.

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“…Furthermore, it is well known that orthogonal frequency-division multiplexing (OFDM) is a powerful tool to combat the frequency selectivity and it is highly resistant to the effect of impulsive noise by spreading the noise signal energy simultaneously over sub-carriers [9]. In addition to the use of OFDM, non-linear blanking and clipping operations are also applied to mitigate the effects of impulsive noise samples with large amplitudes [10], [11].…”

Section: Introductionmentioning

confidence: 99%

“…Figure 1 shows the PDF of Middleton Class A noise for various values of A when Γ = 1 and the Gaussian PDF is also displayed as a reference. In addition, the probability of an error for Middleton Class A noise when employing M -ary phase-shift keying (MPSK) is given in [9] as…”

mentioning

confidence: 99%

Non-binary turbo-coded OFDM-PLC system in the presence of impulsive noise

Abd-Alaziz

Mei

Johnston

et al. 2017

2017 25th European Signal Processing Conference (EUSIPCO)

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Abstract-The power-line communication (PLC) channel causes information-bearing signals to be affected by impulsive noise and the effects of the multipath fading. To mitigate these effects, we propose the employment of non-binary turbo codes, since non-binary error-correcting codes generally promise an enhanced performance in such harsh environments. In this paper, we investigate the performance of non-binary turbo-codes on PLC channels that exhibit frequency selectivity with additive Middleton Class A noise and compare with a comparable binary turbo-coded PLC system. In order to reduce the effect of multipath and impulsive noise, orthogonal frequency-division multiplexing (OFDM) with non-linear receivers (blanking and clipping) have been employed. The system is examined on extremely impulsive channels where the value of the impulsive index (A) is 0.01 and the noise ratio (Γ) is 0.01. The results show that non-binary turbo codes are very robust and achieve a large gain over binary turbo codes on PLC channels.

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On impulse noise and its models

Cited by 76 publications

References 27 publications

Cascaded PLC-VLC Channel Using OFDM and CSK Techniques

Cascaded PLC-VLC Channel Using OFDM and CSK Techniques

Performance Analysis of CDMA/ALOHA Networks in Memory Impulse Channels

Non-binary turbo-coded OFDM-PLC system in the presence of impulsive noise

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