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

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

doi:10.1109/LCOMM.2020.2989633

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

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

Computer Engineering

Research output: Contribution to journal › Article › peer-review

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 by 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 approach on discrete Fourier transform and provides better flexibility to address energy efficiency/SE trade-off.

Original language	English (US)
Article number	9076069
Pages (from-to)	1771-1774
Number of pages	4
Journal	IEEE Communications Letters
Volume	24
Issue number	8
DOIs	https://doi.org/10.1109/LCOMM.2020.2989633
State	Published - Aug 2020

Keywords

Discrete cosine transform
index modulation
intensity modulation-direct detection
optical wireless systems

ASJC Scopus subject areas

Modeling and Simulation
Computer Science Applications
Electrical and Electronic Engineering

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10.1109/LCOMM.2020.2989633

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title = "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 by 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 approach on discrete Fourier transform and provides better flexibility to address energy efficiency/SE trade-off.",

keywords = "Discrete cosine transform, index modulation, intensity modulation-direct detection, optical wireless systems",

author = "Azim, {Ali Waqar} and Marwa Chafii and {Le Guennec}, Yannis and Laurent Ros",

note = "Publisher Copyright: {\textcopyright} 1997-2012 IEEE.",

year = "2020",

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doi = "10.1109/LCOMM.2020.2989633",

language = "English (US)",

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AU - Azim, Ali Waqar

AU - Chafii, Marwa

AU - Le Guennec, Yannis

AU - Ros, Laurent

PY - 2020/8

Y1 - 2020/8

N2 - 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 by 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 approach on discrete Fourier transform and provides better flexibility to address energy efficiency/SE trade-off.

AB - 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 by 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 approach on discrete Fourier transform and provides better flexibility to address energy efficiency/SE trade-off.

KW - Discrete cosine transform

KW - index modulation

KW - intensity modulation-direct detection

KW - optical wireless systems

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JF - IEEE Communications Letters

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

Abstract

Keywords

ASJC Scopus subject areas

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