DCT-OFDM with index modulation

Marwa Chafii, Justin P. Coon, Dene A. Hedges

Research output: Contribution to journalArticlepeer-review


In this letter, index modulation (IM) is proposed for OFDM systems based on a discrete cosine transform (DCT) implementation. The new DCT-OFDM-IM scheme is shown to yield spectral efficiency improvements of up to 38% relative to OFDM-IM and up to 55% relative to OFDM while occupying the same bandwidth and maintaining similar robustness against the frequency selective fading channels for low modulation orders.

Original languageEnglish (US)
Article number7879247
Pages (from-to)1489-1492
Number of pages4
JournalIEEE Communications Letters
Issue number7
StatePublished - Jul 2017


  • Discrete cosine transform
  • index modulation
  • orthogonal frequency division multiplexing
  • spectral efficiency

ASJC Scopus subject areas

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


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