Robust image transmission over powerline channel with impulse noise

Himeur, Yassine; Boukabou, Abdelkrim

doi:10.1007/s11042-015-3216-y

Cited by 16 publications

(6 citation statements)

References 41 publications

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“…Second, the selection of the optimal phase factor in the PTS has extremely high computational complexity. The search space of minimum PAPR increases exponentially with the number of partial sequences, and the simple utilization of the exhaustive method becomes infeasible (Satyendra Singh et al, 2015;Yassine and Abdelkrim, 2017;Li et al, 2023). Finally, signal blanking relying on a single threshold is less effective to deal with the scenario where low-amplitude impulse noise coexists with high-amplitude noise.…”

Section: Shimentioning

confidence: 99%

Two-stage collaborative information interaction reliability improvement for the distribution grid

Shi

2024

Front. Energy Res.

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The impulse noise generated by a large volume of power electronics devices imposes a hazardous impact on information interaction reliability in low-voltage distribution grids. In this paper, we propose a two-stage collaborative information interaction reliability improvement algorithm to minimize the bit error rate (BER) of the information interaction under impulse noise. In the first stage, the transmission-side peak-to-average power ratio (PAPR) is reduced based on the adaptive particle swarm optimization (PSO)-enabled partial transmit sequence (PTS). In the second stage, the reception-side dual-signal blanking is proposed based on the transmission-side PAPR and reception-side useful signal power estimation and peak median ratio. The transmission–reception collaborative information interaction reliability improvement is realized through two aspects. First, transmission-side PAPR reduction improves the performance of reception-side signal blanking by making it easier to distinguish useful signals from impulse noise. Second, the transmission-side PAPR is utilized to improve the estimation accuracy of both coarse and precise thresholds in dual-signal blanking. Simulation results show that the proposed algorithm outperforms existing algorithms in both PAPR reduction and BER performances to achieve information interaction reliability improvement effectively.

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Section: Shimentioning

confidence: 99%

Two-stage collaborative information interaction reliability improvement for the distribution grid

Shi

2024

Front. Energy Res.

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“…In practice, watershed is often applied to image gradient [14], and watershed lines are used to separate uniform regions, thus giving the expected segmentation results [15]. Morphological gradients are usually used to obtain transformed gradient images.…”

Section: Related Workmentioning

confidence: 99%

Road Identification Algorithm for Remote Sensing Images Based on Wavelet Transform and Recursive Operator

2020

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Road edge detection from remote sensing images, as an important ground object type, plays an important role in people's life and travel and urban planning and development, and extracting road information from remote sensing images has practical scientific value and practical significance. However, with the development of remote sensing technology, while the resolution of remote sensing images is improved, the information describing ground objects becomes more and more abundant, and the difficulty of identifying and extracting road information is also increased. In the process of acquiring remote sensing images, the actual system is subjected to various kinds of noise interference. Different environmental interference and system defects will introduce noises with completely different distribution and statistical characteristics to remote sensing images. Aiming at the problem that the detection effect of traditional algorithms becomes worse due to the influence of noise on remote sensing images, a wavelet transform denoising method and morphological gradient operator are proposed. By selecting appropriate structural elements of remote sensing images, noise pixels cannot participate in morphological calculation, and the noise intensity changes with the size of quantum superposition state structural elements. Therefore, a morphological gradient operator is established and applied to edge detection of remote sensing images. Finally, the experimental results show that the method proposed in this paper is better than other directions in terms of effect through road edge detection and matching. This method can effectively reduce noise.

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“…To analyse the impact of IN on a PLC system, this study models the asynchronous IN i k as a BG random process [18]. It is given as…”

Section: System Noise Modelmentioning

confidence: 99%

“…To analyse the impact of IN on a PLC system, this study models the asynchronous IN

i_{k}

as a BG random process [18]. It is given as

i_{k} = b_{k} g_{k}, k = 0, 1, 2, \dots, N - 1,

where

g_{k}

is a complex white Gaussian noise with zero mean and

2 σ_{i}^{2}

variance and

b_{k}

is the real Bernoulli process with probability mass function

P_{normalr} false(b_{k} false) = ({, \begin{matrix} 1em4pt \\ p, b_{k} = 1, \\ 1 - p, b_{k} = 0, \end{matrix}) k = 0, 1, 2, \dots, N - 1,

where p is the probability of occurrence of IN.…”

Section: System Noise Modelmentioning

confidence: 99%

Adaptive decision directed impulse noise mitigate in power line communication

Zhang

Liu

2018

IET signal process.

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Impulse noise (IN) is the main cause of performance degradation in high-speed power line communication systems. Traditional methods mainly focus on manually setting a fixed blanking threshold to mitigate the corresponding IN. However, the fixed threshold cannot adapt to the time-varying IN efficiently. To solve this problem, an adaptive IN-mitigation system is proposed based on orthogonal frequency division multiplexing in a time-varying IN channel. The characteristics of IN are preevaluated by the method of moment estimation. Moreover, the adaptive threshold is efficiently solved in closed form according to the IN characteristics. In addition, an adaptive iterative IN-mitigation block is designed to leverage the performance of the receiver. For the number of iterations, a look-up table is constructed according to the IN characteristics. The experimental results show that the proposed method achieves performance balance in weak, moderate, and heavy IN environments simultaneously. It is noted that the bit error rate significantly decreases with an increment in E b /N 0 .

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Robust image transmission over powerline channel with impulse noise

Cited by 16 publications

References 41 publications

Two-stage collaborative information interaction reliability improvement for the distribution grid

Two-stage collaborative information interaction reliability improvement for the distribution grid

Road Identification Algorithm for Remote Sensing Images Based on Wavelet Transform and Recursive Operator

Adaptive decision directed impulse noise mitigate in power line communication

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