Square-Wave Spatial Optical Orthogonal Frequency-Division Multiplexing
Visible light communication (VLC) systems leverage illumination devices, such as light-emitting diodes (LEDs), to serve a dual role as indoor high-speed communication downlinks. Though high data rates are possible using orthogonal frequency-division (OFDM) in VLC systems, the impact on the complexit...
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| Format: | Article |
| Language: | English |
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IEEE
2024-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/10423110/ |
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| author | Mohammed S. A. Mossaad Kaichen Su Warren Pawlikowski Zhenyu Charlus Zhang Steve Hranilovic Lutz Lampe |
| author_facet | Mohammed S. A. Mossaad Kaichen Su Warren Pawlikowski Zhenyu Charlus Zhang Steve Hranilovic Lutz Lampe |
| author_sort | Mohammed S. A. Mossaad |
| collection | DOAJ |
| description | Visible light communication (VLC) systems leverage illumination devices, such as light-emitting diodes (LEDs), to serve a dual role as indoor high-speed communication downlinks. Though high data rates are possible using orthogonal frequency-division (OFDM) in VLC systems, the impact on the complexity and luminous efficacy of the luminaire remain among the key challenges. In this paper, <italic>square-wave spatial optical OFDM</italic> (SW-SO-OFDM) is proposed which transmits an OFDM signal using <inline-formula><tex-math notation="LaTeX">$G$</tex-math></inline-formula> square-wave subcarriers from <inline-formula><tex-math notation="LaTeX">$G$</tex-math></inline-formula> LED groups and allowing them to sum in space. Using a binary-level square-wave carrier signal eliminates the need for digital-to-analog conversion, non-linear pre-distortion hardware and the transmitter inverse Fourier transform, thereby greatly reducing the complexity of the transmitter in the luminaire. Further, by coordinating the binary transmissions from pairs of LED groups, SW-SO-OFDM can transmit multi-level constellations, which further improves the bandwidth efficiency. Through simulation and experiment, SW-SO-OFDM is shown to provide communication performance comparable to SO-OFDM and to significantly outperform conventional DC-biased (DCO)-OFDM at high signal-to-noise ratios, while considerably reducing the overall transmitter complexity in the luminaire. |
| first_indexed | 2024-03-07T20:11:03Z |
| format | Article |
| id | doaj.art-950fc305094948129afefaf29fc36d0d |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-03-07T20:11:03Z |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-950fc305094948129afefaf29fc36d0d2024-02-28T00:00:10ZengIEEEIEEE Photonics Journal1943-06552024-01-0116211310.1109/JPHOT.2024.336234810423110Square-Wave Spatial Optical Orthogonal Frequency-Division MultiplexingMohammed S. A. Mossaad0https://orcid.org/0000-0003-2677-2271Kaichen Su1https://orcid.org/0009-0007-6140-522XWarren Pawlikowski2https://orcid.org/0009-0003-3587-5464Zhenyu Charlus Zhang3https://orcid.org/0000-0003-0940-9294Steve Hranilovic4https://orcid.org/0000-0003-0308-2489Lutz Lampe5https://orcid.org/0000-0002-6583-1978Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON, CanadaDepartment of Electrical and Computer Engineering, McMaster University, Hamilton, ON, CanadaDepartment of Electrical and Computer Engineering, McMaster University, Hamilton, ON, CanadaDepartment of Electrical and Computer Engineering, McMaster University, Hamilton, ON, CanadaDepartment of Electrical and Computer Engineering, McMaster University, Hamilton, ON, CanadaDepartment of Electrical and Computer Engineering, University of British Columbia, Vancouver, BC, CanadaVisible light communication (VLC) systems leverage illumination devices, such as light-emitting diodes (LEDs), to serve a dual role as indoor high-speed communication downlinks. Though high data rates are possible using orthogonal frequency-division (OFDM) in VLC systems, the impact on the complexity and luminous efficacy of the luminaire remain among the key challenges. In this paper, <italic>square-wave spatial optical OFDM</italic> (SW-SO-OFDM) is proposed which transmits an OFDM signal using <inline-formula><tex-math notation="LaTeX">$G$</tex-math></inline-formula> square-wave subcarriers from <inline-formula><tex-math notation="LaTeX">$G$</tex-math></inline-formula> LED groups and allowing them to sum in space. Using a binary-level square-wave carrier signal eliminates the need for digital-to-analog conversion, non-linear pre-distortion hardware and the transmitter inverse Fourier transform, thereby greatly reducing the complexity of the transmitter in the luminaire. Further, by coordinating the binary transmissions from pairs of LED groups, SW-SO-OFDM can transmit multi-level constellations, which further improves the bandwidth efficiency. Through simulation and experiment, SW-SO-OFDM is shown to provide communication performance comparable to SO-OFDM and to significantly outperform conventional DC-biased (DCO)-OFDM at high signal-to-noise ratios, while considerably reducing the overall transmitter complexity in the luminaire.https://ieeexplore.ieee.org/document/10423110/Intensity modulationoptical OFDMvisible light communications |
| spellingShingle | Mohammed S. A. Mossaad Kaichen Su Warren Pawlikowski Zhenyu Charlus Zhang Steve Hranilovic Lutz Lampe Square-Wave Spatial Optical Orthogonal Frequency-Division Multiplexing IEEE Photonics Journal Intensity modulation optical OFDM visible light communications |
| title | Square-Wave Spatial Optical Orthogonal Frequency-Division Multiplexing |
| title_full | Square-Wave Spatial Optical Orthogonal Frequency-Division Multiplexing |
| title_fullStr | Square-Wave Spatial Optical Orthogonal Frequency-Division Multiplexing |
| title_full_unstemmed | Square-Wave Spatial Optical Orthogonal Frequency-Division Multiplexing |
| title_short | Square-Wave Spatial Optical Orthogonal Frequency-Division Multiplexing |
| title_sort | square wave spatial optical orthogonal frequency division multiplexing |
| topic | Intensity modulation optical OFDM visible light communications |
| url | https://ieeexplore.ieee.org/document/10423110/ |
| work_keys_str_mv | AT mohammedsamossaad squarewavespatialopticalorthogonalfrequencydivisionmultiplexing AT kaichensu squarewavespatialopticalorthogonalfrequencydivisionmultiplexing AT warrenpawlikowski squarewavespatialopticalorthogonalfrequencydivisionmultiplexing AT zhenyucharluszhang squarewavespatialopticalorthogonalfrequencydivisionmultiplexing AT stevehranilovic squarewavespatialopticalorthogonalfrequencydivisionmultiplexing AT lutzlampe squarewavespatialopticalorthogonalfrequencydivisionmultiplexing |