Optimization of non-orthogonal multiple access based visible light communication systems

Zanib Tahira, Hafiz M. Asif, Asim Ali Khan, Sobia Baig, Shahid Mumtaz, Saba Al-Rubaye

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)


In visible light communication (VLC), the data is transmitted by modulating the light emitting diode (LED). The data-rate is throttled by the narrow modulation bandwidth of LEDs, which becomes a barrier for attaining high transmission rates. Non-orthogonal multiple access (NOMA) is a new scheme envisioned to improve the system capacity. In addition to multiple access schemes, optimization techniques are applied to further improve the data rate. In this letter, convex optimization is applied to NOMA-based VLC system for downlink. The proposed optimization system is analyzed in terms of the bit error rate (BER) and the sum-rate.

Original languageEnglish
Pages (from-to)1365-1368
Number of pages4
JournalIEEE Communications Letters
Issue number8
Publication statusPublished - Aug 2019
Externally publishedYes


  • Cuckoo Search algorithm
  • Fifth generation (5G)
  • Multiobjective optimization
  • Non-convex optimization
  • Non-orthogonal multiple access (NOMA)
  • Visible light communication (VLC)

ASJC Scopus subject areas

  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

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