Performance Comparison of FFT and DHT Hybrid PLC-VLC Systems Based on DCO-OFDM in Impulsive Noise

Mapfumo, Irvine; Shongwe, Thokozani

doi:10.1109/radioelektronika49387.2020.9092383

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…In such configurations, PLC acts as the primary communication infrastructure, while the VLC acts as the interface with the users [6]. DC-biased optical -orthogonal frequency division multiplexing (DCO-OFDM) and asymmetrically clipped optical -orthogonal frequency division multiplexing (ACO-OFDM) modulation techniques play an integral part in the successful amalgamation of the PLC and VLC technologies [7], [8]. Both modulation techniques ensure that data from the PLC channel is positive and real-valued, for compatibility with the VLC channel [9].…”

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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Section: Introductionmentioning

confidence: 99%

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

2023

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“…Later, many other scenarios were built to optimize the hybrid system in terms of complexity, cost, rate, etc. [6]- [8].…”

Section: Introductionmentioning

confidence: 99%

VLC Modelization for VLC-PLC System: Evaluation of Optical, Electrical, and Frequency Behavior

Yaacoub

Nouvel

Haese

et al. 2021

2021 IEEE International Symposium on Circuits and Systems (ISCAS)

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The integration of powerline communication (PLC) with visible light communication (VLC) has attracted the attention of many researchers. Cascading these two techniques offers the possibility of performing a wired transmission over existing powerline infrastructure and a last-mile energy-efficient wireless transmission through pre-installed LEDs for indoor illumination. Therefore, VLC should be deeply analyzed to optimize its integration with other systems. So far, most research has only modeled the channel and modulation bandwidth of the VLC system. However, the electrical and optical aspects are rarely taken into account and there is no explicit expression of the received signal as a function of that emitted. So in this paper, An explicit expression is proposed allowing a direct calculation of the photo-current as a function of the transmitted current taking into account the optical, electrical, and frequency behavior of the VLC system. This expression is validated using measurement results.Index Terms-VLC channel, LED frequency response, optical power, photo-current.

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A Novel Impulsive Noise Suppression and Data Recovery Method for ACO-OFDM-Based Hybrid PLC-VLC Systems

Ramazan,

Rizaner,

Ulusoy

2024

Wireless Pers Commun

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Performance Comparison of FFT and DHT Hybrid PLC-VLC Systems Based on DCO-OFDM in Impulsive Noise

Cited by 4 publications

References 12 publications

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

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

VLC Modelization for VLC-PLC System: Evaluation of Optical, Electrical, and Frequency Behavior

A Novel Impulsive Noise Suppression and Data Recovery Method for ACO-OFDM-Based Hybrid PLC-VLC Systems

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