Hybrid multiplexing in OFDM-based VLC systems

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Chen, Cheng and Tavakkolnia, Iman and Soltani, Mohammad Dehghani and Safari, Majid and Haas, Harald; (2020) Hybrid multiplexing in OFDM-based VLC systems. In: 2020 IEEE Wireless Communications and Networking Conference (WCNC). Proceedings of the IEEE Wireless Communications and Networking Conference . IEEE, Piscataway, NJ, pp. 1-6. ISBN 9781728131061 (https://doi.org/10.1109/WCNC45663.2020.9120825)

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Abstract

In conventional visible light communication (VLC) systems with multiple light-emitting diodes (LEDs) and multiple photodiodes (PDs), high data rate transmission with limited modulation bandwidth can be achieved via spatial multiplexing (SMP) or wavelength division multiplexing (WDM). However, the number of multiplexing channels is limited by the strong spatial correlation in SMP and by the inter-colour crosstalk in WDM. In this paper, we propose a multiple-input multiple-output (MIMO) hybrid multiplexing (HMP) VLC system which avoids the disadvantages of SMP/ WDM and explores the degrees-of-freedom (DoFs) in space and wavelength domains jointly. With appropriate system configuration, a MIMO channel matrix with a better channel condition in HMP can be obtained. Eventually, it is able to increase the number of multiplexing channels and support higher data rate transmission.

ORCID iDs

Chen, Cheng, Tavakkolnia, Iman ORCID logoORCID: https://orcid.org/0000-0003-4736-1949, Soltani, Mohammad Dehghani, Safari, Majid and Haas, Harald;
CORE (COnnecting REpositories)