Secure communication zone for white-light LED visible light communication

Chi-Wai Chow, Yang Liu, Chien Hung Yeh*, Chung Yen Chen, Chao Nan Lin, Dar Zu Hsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

39 Scopus citations


As visible light communication (VLC) can be one of the promising wireless communication technologies in the future, improving the transmission security in VLC is highly desirable. We propose and demonstrate a secure VLC system using data superposition of different light emitting diodes (LEDs). The eavesdroppers can receive similar illumination but cannot obtain enough signal-to-noise ratio (SNR) for communication. The channel model and simulation parameters are presented. Analysis of the secure VLC zone forming using practical in-home scenarios is also discussed, showing the flexibly control the size and shift of secure VLC zone. A proof-of-concept experiment is performed, and there is a good match in trend between the experimental and simulation results.

Original languageEnglish
Pages (from-to)81-85
Number of pages5
JournalOptics Communications
StatePublished - 1 Jan 2015


  • Optical wireless communication (OWC)
  • Secure communication
  • Visible light communication (VLC)

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