Digital Color Shift Keying With Multicolor LED Array
Color shift keying (CSK) is a visible light communication (VLC) intensity modulation scheme, which is outlined in IEEE 802.15.7, that transmits data imperceptibly through the variation of the color emitted by red, green, and blue light-emitting diodes (RGB LEDs). In this paper, digital CSK (DCSK) is...
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IEEE
2016-01-01
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| Series: | IEEE Photonics Journal |
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| Online Access: | https://ieeexplore.ieee.org/document/7495012/ |
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| author | Naoya Murata Yusuke Kozawa Yohtaro Umeda |
| author_facet | Naoya Murata Yusuke Kozawa Yohtaro Umeda |
| author_sort | Naoya Murata |
| collection | DOAJ |
| description | Color shift keying (CSK) is a visible light communication (VLC) intensity modulation scheme, which is outlined in IEEE 802.15.7, that transmits data imperceptibly through the variation of the color emitted by red, green, and blue light-emitting diodes (RGB LEDs). In this paper, digital CSK (DCSK) is presented, which represents CSK symbols by digitally controlled multiple multicolor LEDs to avoid the effect of LED nonlinearity. By using this scheme, the DCSK system using nine RGB LEDs can transmit IEEE 802.15.7 CSK constellations with an error-vector-magnitude (EVM) performance on an <inline-formula> <tex-math notation="LaTeX">$x{-}y$</tex-math></inline-formula> chromaticity of 3%. The bit-error-rate (BER) evaluation of both the conventional and the proposed DCSK system shows that the DCSK system achieves similar BER to that of CSK with a linear variable current driver including predistortion, with taking into account optical wireless channels including the LED response, undesired color shift, and channel crosstalk by the practice characteristics of RGB LEDs, RGB bandpass filters, and photodiodes. |
| format | Article |
| id | doaj-art-fb6a310b356a488cb1834b9472fdeeac |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-fb6a310b356a488cb1834b9472fdeeac2025-08-20T03:31:16ZengIEEEIEEE Photonics Journal1943-06552016-01-018411310.1109/JPHOT.2016.25826457495012Digital Color Shift Keying With Multicolor LED ArrayNaoya Murata0Yusuke Kozawa1Yohtaro Umeda2Department of Electrical Engineering, Graduate School of Science and Technology, Tokyo University of Science, Noda, JapanDepartment of Electrical Engineering, Graduate School of Science and Technology, Tokyo University of Science, Noda, JapanDepartment of Electrical Engineering, Graduate School of Science and Technology, Tokyo University of Science, Noda, JapanColor shift keying (CSK) is a visible light communication (VLC) intensity modulation scheme, which is outlined in IEEE 802.15.7, that transmits data imperceptibly through the variation of the color emitted by red, green, and blue light-emitting diodes (RGB LEDs). In this paper, digital CSK (DCSK) is presented, which represents CSK symbols by digitally controlled multiple multicolor LEDs to avoid the effect of LED nonlinearity. By using this scheme, the DCSK system using nine RGB LEDs can transmit IEEE 802.15.7 CSK constellations with an error-vector-magnitude (EVM) performance on an <inline-formula> <tex-math notation="LaTeX">$x{-}y$</tex-math></inline-formula> chromaticity of 3%. The bit-error-rate (BER) evaluation of both the conventional and the proposed DCSK system shows that the DCSK system achieves similar BER to that of CSK with a linear variable current driver including predistortion, with taking into account optical wireless channels including the LED response, undesired color shift, and channel crosstalk by the practice characteristics of RGB LEDs, RGB bandpass filters, and photodiodes.https://ieeexplore.ieee.org/document/7495012/Visible light communications (VLC)light-emitting diode (LED)color shift keying (CSK)digital color shift keying (DCSK)LED non-linearity |
| spellingShingle | Naoya Murata Yusuke Kozawa Yohtaro Umeda Digital Color Shift Keying With Multicolor LED Array IEEE Photonics Journal Visible light communications (VLC) light-emitting diode (LED) color shift keying (CSK) digital color shift keying (DCSK) LED non-linearity |
| title | Digital Color Shift Keying With Multicolor LED Array |
| title_full | Digital Color Shift Keying With Multicolor LED Array |
| title_fullStr | Digital Color Shift Keying With Multicolor LED Array |
| title_full_unstemmed | Digital Color Shift Keying With Multicolor LED Array |
| title_short | Digital Color Shift Keying With Multicolor LED Array |
| title_sort | digital color shift keying with multicolor led array |
| topic | Visible light communications (VLC) light-emitting diode (LED) color shift keying (CSK) digital color shift keying (DCSK) LED non-linearity |
| url | https://ieeexplore.ieee.org/document/7495012/ |
| work_keys_str_mv | AT naoyamurata digitalcolorshiftkeyingwithmulticolorledarray AT yusukekozawa digitalcolorshiftkeyingwithmulticolorledarray AT yohtaroumeda digitalcolorshiftkeyingwithmulticolorledarray |