Hybrid PLC-VLC based on ACO-OFDM

Kubjana, M. D.; Shongwe, Thokozani; Ndjiongue, Alain R.

doi:10.1109/iconic.2018.8601240

Cited by 10 publications

(8 citation statements)

References 16 publications

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“…Meanwhile, NOMA signaling can reduce the cost of communications systems to help provide low-latency services. In [41][42][43], researchers analyzed the signal-to-noise (SNR) about different OFDM modulation methods of PLC and IWOC system.…”

Section: Hybrid Optical Wireless System In Noma Modementioning

confidence: 99%

“…Indoor multi-user downlink of hybrid circuit and IWOC must face the limited transmission bandwidth of power line and visible integrated channel. In order to improve the transmission spectrum efficiency of the above hybrid system, more and more researchers have proposed multi-carrier system scheme to better cope with the frequency selectivity of the channel [27,28,35,41,64,65], as shown in Figure 16. In this paper, the IWOC in the module in Figure 16 is represented by IWOC.…”

Section: Integrated Transmission Schemes Of Power Line and Indoor Wireless Optical Communicationsmentioning

confidence: 99%

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Advanced Progress of Optical Wireless Technologies for Power Industry: An Overview

et al. 2020

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Optical wireless communications have attracted widespread attention in the traditional power industry because of the advantages of large spectrum resources, strong confidentiality, and freedom from traditional electromagnetic interference. This paper mainly summarizes the major classification and frontier development of power industry optical wireless technologies, including the indoor and outdoor channel characteristics of power industry optical wireless communication system, modulation scheme, the performance of hybrid power line, and indoor wireless optical communications system. Furthermore, this article compares domestic and foreign experiments, analyzes parameters for instance transmission rate, and reviews different application scenarios such as power wireless optical positioning and monitoring. In addition, in view of the shortcomings of traditional power technology, optical wireless power transfer technology is proposed and combined with unmanned aerial vehicles to achieve remote communication. At last, the main challenges and possible solutions faced by power industry wireless optical technologies are proposed.

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Section: Hybrid Optical Wireless System In Noma Modementioning

confidence: 99%

Section: Integrated Transmission Schemes Of Power Line and Indoor Wireless Optical Communicationsmentioning

confidence: 99%

Advanced Progress of Optical Wireless Technologies for Power Industry: An Overview

et al. 2020

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“…Impulsive noise is one of the most noticeable types of noise in hybrid PLC-VLC systems. Authors in [11], [12] presented on the alleviation of impulsive noise in hybrid PLC-VLC systems implemented by DCO-OFDM and ACO-OFDM, respectively.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of ACO/DCO-OFDM Hybrid PLC-VLC Receivers With Blanking Non-Linearity

2023

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Blanking non-linearity is broadly used in impulsive noise communication environments due to its efficiency and ease of deployment to mitigate such noise. During the blanking procedure, data samples with impulsive noise are identified and clipped to zero, which removes impulsive noise from the system thereby, improving the system performance. In this regard, this paper investigates the performance of hybrid power line communication-visible light communication (PLC-VLC) systems with blanking nonlinearity. The signal-to-noise (SNR) ratio at the output of the blanking device is deduced using a closed-form analytical expression. The results show that there is good agreement between simulation results and theory if there is a sufficiently large number of orthogonal frequency division multiplexing (OFDM) sub-carriers. In addition, the study also indicates that the blanking method is more effective in curbing impulsive noise in comparison to the clipping technique. According to the threshold optimisation investigations, there exists a worst-case SINR value that minimizes the output SNR at the OFDM receiver after blanking. Furthermore, the findings also revealed that proper blanking threshold selection is essential for obtaining the best performance. INDEX TERMSPower line communication, visible light communication, orthogonal frequency division multiplexing, DC-biased optical-orthogonal frequency division multiplexing, asymmetrically clipped optical-orthogonal frequency division multiplexing, PLC-VLC systems.

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“…In [6], a PLC-VLC system based on the use of a DC biased optical OFDM (DCO-OFDM) is proposed in order to exploit its clipping feature to reduce the impulsive noise of the PLC channel. Similarly in [7], asymmetrically clipped optical OFDM (ACO-OFDM) is employed in the hybrid PLC-VLC system, taking advantage of the nulling feature of the ACO-OFDM to mitigate the PLC channel impulsive noise. In [8], low complexity amplify and forward (AF) PLC-VLC system is proposed using spatial optical OFDM to reduce the peak to average power ratio.…”

Section: Introductionmentioning

confidence: 99%

Can Commercial LED Bulbs Pose a Threat to PLC System Security?

Yaacoub

Nouvel

Haese

et al. 2022

GLOBECOM 2022 - 2022 IEEE Global Communications Conference

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Techniques that improve interfacing between powerline communication (PLC) systems and LED-based visible light communication (VLC) systems start to gain attention in recent years. Indeed, this hybrid system is able to provide simultaneously power, lighting, and data transmission. Contrariwise, if the integration between PLC and commercial LED bulbs is done unintentionally, the risks of PLC data leakage by commercial LED bulbs must be carefully analyzed. Thus, in this paper, the risks of eavesdropping on the PLC network via commercial LED bulbs are studied. The impact of the LED driver on PLC data leakage through LED bulbs is explained. The electrical-optical channel transfer function for different LED bulbs and the power spectral density of the signal received through the LED bulbs when two commercial powerline modems are plugged into the same power line are measured. Afterwards, pseudo random binary sequence signals are injected into the electrical-optical channel in order to assess quantitatively the possibility to extract information from the received signal. Finally, simple LED driver modifications that foster and increase the leakage are analyzed.

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Hybrid PLC-VLC based on ACO-OFDM

Cited by 10 publications

References 16 publications

Advanced Progress of Optical Wireless Technologies for Power Industry: An Overview

Advanced Progress of Optical Wireless Technologies for Power Industry: An Overview

Performance Analysis of ACO/DCO-OFDM Hybrid PLC-VLC Receivers With Blanking Non-Linearity

Can Commercial LED Bulbs Pose a Threat to PLC System Security?

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