Demonstration of Non-Hermitian Symmetry (NHS) IFFT/FFT Size Efficient OFDM Non-Orthogonal Multiple Access (NOMA) for Visible Light Communication

Assaidah Assaidah, Yang Liu, Chi-Wai Chow*, Ching-Hua Yeh

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Scopus citations


We propose and experimentally demonstrate a non-orthogonal multiple access (NOMA) visible light communication (VLC) system using non-Hermitian symmetry (NHS) inverse-fast-Fourier-transform (IFFT)/FFT size efficient (SE) orthogonal frequency division multiplexing (OFDM). Fix power allocation and successive interference cancellation (SIC) algorithms are realized. The power ratio between different users, transmission distance, network cell coverage are investigated. The proposed scheme is also compared with the HS based direct-current optical (DCO)-OFDM NOMA-VLC system.

Original languageEnglish
Article number7201405
Number of pages5
JournalIEEE Photonics Journal
Issue number3
StatePublished - Jun 2020


  • Light emitting diode (LED)
  • visible light communication (VLC)
  • non-orthogonal multiple access (NOMA)
  • VLC

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