Link adaptation for MIMO OFDM visible light communication systems

Omer Narmanlioglu; Refik Caglar Kizilirmak; Tuncer Baykas; Murat Uysal

doi:10.1109/ACCESS.2017.2771333

Link adaptation for MIMO OFDM visible light communication systems

Omer Narmanlioglu, Refik Caglar Kizilirmak, Tuncer Baykas, Murat Uysal

Engineering

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

Abstract

In this paper, we investigate link adaptation for an orthogonal frequency division multiplexing (OFDM)-based multiple-input multiple-output (MIMO) visible light communication (VLC) system. The proposed adaptive OFDM VLC system supports both repetition coding (RC) and spatial multiplexing (SM) as MIMO modes and allows spatial mode switching based on channel conditions. Regarding to the instantaneous signal-to-noise ratio for both RC and SM modes, the maximum constellation size that can be supported for each MIMO mode on each subcarrier is determined. The MIMO mode that gives the highest spectral efficiency (SE) is then selected. The proposed joint MIMO mode selection and bit loading scheme maximizes the SE while satisfying a target bit error rate. Our numerical results reveal that a peak data rate up to 18.3 Gb/sec can be achieved in a 16 × 16 MIMO setting using light emitting diodes with cut-off frequency of 10 MHz in typical indoor environments.

Original language	English (US)
Article number	8105790
Pages (from-to)	26006-26014
Number of pages	9
Journal	IEEE Access
Volume	5
DOIs	https://doi.org/10.1109/ACCESS.2017.2771333
State	Published - Nov 10 2017

Keywords

Adaptive transmission
Bit loading
MIMO mode switching
OFDM
Visible light communication

ASJC Scopus subject areas

Computer Science(all)
Materials Science(all)
Engineering(all)

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10.1109/ACCESS.2017.2771333

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title = "Link adaptation for MIMO OFDM visible light communication systems",

abstract = "In this paper, we investigate link adaptation for an orthogonal frequency division multiplexing (OFDM)-based multiple-input multiple-output (MIMO) visible light communication (VLC) system. The proposed adaptive OFDM VLC system supports both repetition coding (RC) and spatial multiplexing (SM) as MIMO modes and allows spatial mode switching based on channel conditions. Regarding to the instantaneous signal-to-noise ratio for both RC and SM modes, the maximum constellation size that can be supported for each MIMO mode on each subcarrier is determined. The MIMO mode that gives the highest spectral efficiency (SE) is then selected. The proposed joint MIMO mode selection and bit loading scheme maximizes the SE while satisfying a target bit error rate. Our numerical results reveal that a peak data rate up to 18.3 Gb/sec can be achieved in a 16 × 16 MIMO setting using light emitting diodes with cut-off frequency of 10 MHz in typical indoor environments.",

keywords = "Adaptive transmission, Bit loading, MIMO mode switching, OFDM, Visible light communication",

author = "Omer Narmanlioglu and Kizilirmak, {Refik Caglar} and Tuncer Baykas and Murat Uysal",

note = "Funding Information: The work of R. C. Kizilirmak was supported by the research grant from Nazarbayev University. The work of M. Uysal was supported by the Turkish Scientific and Research Council (TUBITAK) under Grant 215E311. Publisher Copyright: {\textcopyright} 2017 IEEE.",

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doi = "10.1109/ACCESS.2017.2771333",

language = "English (US)",

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AU - Baykas, Tuncer

AU - Uysal, Murat

N1 - Funding Information: The work of R. C. Kizilirmak was supported by the research grant from Nazarbayev University. The work of M. Uysal was supported by the Turkish Scientific and Research Council (TUBITAK) under Grant 215E311. Publisher Copyright: © 2017 IEEE.

PY - 2017/11/10

Y1 - 2017/11/10

N2 - In this paper, we investigate link adaptation for an orthogonal frequency division multiplexing (OFDM)-based multiple-input multiple-output (MIMO) visible light communication (VLC) system. The proposed adaptive OFDM VLC system supports both repetition coding (RC) and spatial multiplexing (SM) as MIMO modes and allows spatial mode switching based on channel conditions. Regarding to the instantaneous signal-to-noise ratio for both RC and SM modes, the maximum constellation size that can be supported for each MIMO mode on each subcarrier is determined. The MIMO mode that gives the highest spectral efficiency (SE) is then selected. The proposed joint MIMO mode selection and bit loading scheme maximizes the SE while satisfying a target bit error rate. Our numerical results reveal that a peak data rate up to 18.3 Gb/sec can be achieved in a 16 × 16 MIMO setting using light emitting diodes with cut-off frequency of 10 MHz in typical indoor environments.

AB - In this paper, we investigate link adaptation for an orthogonal frequency division multiplexing (OFDM)-based multiple-input multiple-output (MIMO) visible light communication (VLC) system. The proposed adaptive OFDM VLC system supports both repetition coding (RC) and spatial multiplexing (SM) as MIMO modes and allows spatial mode switching based on channel conditions. Regarding to the instantaneous signal-to-noise ratio for both RC and SM modes, the maximum constellation size that can be supported for each MIMO mode on each subcarrier is determined. The MIMO mode that gives the highest spectral efficiency (SE) is then selected. The proposed joint MIMO mode selection and bit loading scheme maximizes the SE while satisfying a target bit error rate. Our numerical results reveal that a peak data rate up to 18.3 Gb/sec can be achieved in a 16 × 16 MIMO setting using light emitting diodes with cut-off frequency of 10 MHz in typical indoor environments.

KW - Adaptive transmission

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KW - MIMO mode switching

KW - OFDM

KW - Visible light communication

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Link adaptation for MIMO OFDM visible light communication systems

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Keywords

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