Performance Evaluation of a Simplified Power-Domain NOMA for Visible Light Communications

Jair A. Lima Silva, João P. Lebarck Pizzaia, Wesley da Silva Costa, Higor A. Fim Camporez, Maria J. Pontes, Helder R. De Oliveira Rocha, Marcelo E. Vieria Segatto

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Abstract

The performance of a visible light communication (VLC) system based on power domain non-orthogonal multiple access (PD-NOMA) is experimentally evaluated in this paper. The simplicity of the adopted non-orthogonal scheme is provided by the fixed power allocation method at the transmitter and the single one-tap equalization executed before the successive interference cancellation at the receiver. The experimental results proved the successful transmission of the PD-NOMA scheme with three users in VLC links of up to 2.5 m, after a proper choice of the optical modulation index. All users achieved error-vector magnitude (EVM) performances below FEC limits in all evaluated transmission distances. At 2.5 m, the user with the best performance reaches an EVM = 2.3 %.
Original languageEnglish
Number of pages10
JournalJournal of the Optical Society of America A
Volume40
Issue numberC46-C52
Publication statusPublished - 1 Mar 2023

Keywords

  • optical communication

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