Clipping Noise Mitigation in Optical OFDM Systems

Cuiwei He, Jean Armstrong

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6 Citations (Scopus)


This letter describes a new non-linear algorithm for clipping noise mitigation in intensity modulation/direct detection dc biased optical orthogonal frequency division multiplexing (DCO-OFDM) systems. Clipping noise is often the major limitation in DCO-OFDM. In this letter, we show that extra information about the clipped signal can be extracted using a non-linear process and then used to mitigate the clipping noise. The effectiveness of the new algorithm is demonstrated by simulation and in an optical wireless experiment.

Original languageEnglish
Article number7795158
Pages (from-to)548-551
Number of pages4
JournalIEEE Communications Letters
Issue number3
Publication statusPublished - 1 Mar 2017


  • clipping noise
  • Intensity modulation/direct detection (IM/DD)
  • optical OFDM

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