Filtered Asymmetrically Clipped Optical-OFDM with Index Modulation for Optical Wireless Systems

Ali Waqar Azim, Yannis Le Guennec, Marwa Chafii, Laurent Ros

Research output: Contribution to journalArticlepeer-review


In this letter, we present filtered asymmetrically clipped optical-orthogonal frequency-division multiplexing with index modulation (FACO-OFDM-IM) for optical wireless systems. FACO-OFDM-IM optimizes the baseband bandwidth by filtering out-of-band spectral leakage caused by clipping. Additionally, IM enables FACO-OFDM-IM to impart granularity for spectral efficiency (SE)/energy efficiency (EE) trade-off and to achieve higher SE over established counterparts. Hereby, we elucidate the transceiver architecture, SE/EE trade-off, and bit-error-rate (BER). Simulation results establish that FACO-OFDM-IM attains higher spectral efficiences than classical IM approaches and outperforms them for low alphabet cardinalities while marginally increasing the complexity.

Original languageEnglish (US)
Article number9312121
Pages (from-to)1592-1595
Number of pages4
JournalIEEE Communications Letters
Issue number5
StatePublished - May 2021


  • Discrete Fourier transform
  • Internet-of-Things
  • index modulation
  • intensity modulation and direct detection
  • optical wireless systems
  • orthogonal frequency-division multiplexing

ASJC Scopus subject areas

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


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