Literature Database Entry

jaddou2025evaluation

Basel Jaddou, "Evaluation of a hybrid LiFi/PLC communication system," Bachelor Thesis, School of Electrical Engineering and Computer Science (EECS), TU Berlin (TUB), August 2025. (Advisor: Anatolij Zubow; Referees: Falko Dressler and Thomas Sikora)

Abstract

This work evaluates a cost-effective hybrid indoor access system that combines Powerline Communication (PLC) for in-building backhaul with Light Fidelity (LiFi) for wireless access. The goal is to assess the practical viability of this concept as an alternative to conventional approaches that require extensive cabling or operate in congested radio-frequency spectrums. In contrast to prior studies using idealized assumptions, this analysis employs realistic channel models: measured, broadband PLC channels with colored noise, and physically-based LiFi channels generated via ray tracing (Blender, NVIDIA Sionna-RT). System performance was evaluated for two office geometries (4x4x3 m and 6x6x3 m) in both single-relay and cooperative modes, analyzing end-to-end effective SNR and throughput determined by bit-loading under variable Amplify-and-Forward (AFR) gain. The realistic modeling reveals a significantly smaller link budget than analytical baselines, with LiFi channel gains reduced by up to 30 dB and incoming PLC signals being 46–51 dB weaker. System performance is critically dependent on the AFR amplification. At very high amplifications of 50 dB, the system achieves a throughput of 29.73 Mbit/s in the smaller room with six cooperating links. This figure drops to 25.12 Mbit/s in the larger room. At more realistic amplification levels of 30 dB, throughput falls below 4 Mbit/s for six cooperating nodes, which is insufficient for most modern applications. In conclusion, the hybrid concept could be viable, but is heavily bottlenecked by the weakest PLC link and the limited gain offered by the LiFi channel due to its high carrier frequency. Overall, it appears suitable only for basic applications under realistic amplification conditions. A higher LiFi nodes density, along with adaptive gain and cooperative strategies, may be essential for such systems to reliably achieve broadband-grade performance.

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Basel Jaddou

BibTeX reference

@phdthesis{jaddou2025evaluation,
    author = {Jaddou, Basel},
    title = {{Evaluation of a hybrid LiFi/PLC communication system}},
    advisor = {Zubow, Anatolij},
    institution = {School of Electrical Engineering and Computer Science (EECS)},
    location = {Berlin, Germany},
    month = {8},
    referee = {Dressler, Falko and Sikora, Thomas},
    school = {TU Berlin (TUB)},
    type = {Bachelor Thesis},
    year = {2025},
   }
   
   

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Last modified: 2026-04-20