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Spectral and Energy Efficient Fast-OFDM with Index Modulation for Optical Wireless Systems

Abstract : This letter introduces fast-orthogonal frequency-division multiplexing (FOFDM) with index modulation (IM) based on discrete cosine transform (DCT) for optical wireless systems. For intensity-modulation and direct detection, the proposed approach realizes a real-valued intensity waveform employing real-valued one-dimensional modulation formats and DCT; and brings about non-negativity via direct current bias. We shall establish that it attains up to 64% higher spectral efficiency (SE) with low order alphabets than conventional IM based on discrete Fourier transform and provides better flexibility to address the trade-off between SE and energy efficiency.
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https://hal.archives-ouvertes.fr/hal-02869457
Contributor : Laurent Ros <>
Submitted on : Tuesday, June 16, 2020 - 9:02:12 AM
Last modification on : Friday, July 10, 2020 - 11:48:02 AM

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Ali Azim, Marwa Chafii, Yannis Le Guennec, Laurent Ros. Spectral and Energy Efficient Fast-OFDM with Index Modulation for Optical Wireless Systems. IEEE Communications Letters, Institute of Electrical and Electronics Engineers, 2020, pp.1-1. ⟨10.1109/LCOMM.2020.2989633⟩. ⟨hal-02869457⟩

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