| Presentation | 2010-03-01 Design and Analysis of Speed-Enhancing Circuit for Visible Light Communication Yusuke SHIMOGAKI, Yohtaro UMEDA, Osamu TAKYU, Masao NAKAGAWA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Recently, Visible Light Communication that communicates by modulating light of illumination attracts much attention. It is useful to increase transmission speed for a single visible-light LED to aim at a higher bit rate, wider bandwidth, and the miniaturization of the hardware of this communication system. In this study, we propose an LED driving circuit that includes the speed-enhancing circuit. With the speed-enhancing circuit the LED driving current increases in the frequency range higher than the cutoff frequency of photo-response of the LED. As a result, the speed-enhancing circuit compensates the decrease of photo-response of the LED at a higher frequency than the cutoff frequency and increases the bandwidth of the LED emitting light. In addition, the design method of the speed-enhancing circuit is clarified and the impact of the speed-enhancing circuit on frequency dependence of the LED light intensity is demonstrated. The transmission bandwidth increases from 2.6 MHz to 4.4 MHz by applying the speed-enhancing circuit on white LED and to 7.1 MHz by applying both a blue filter and the speed-enhancing circuit. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Visible Light Communication / LED / driver / speed-enhancing / transmission rate |
| Paper # | CAS2009-94,SIP2009-139,CS2009-89 |
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| Conference Information | |
| Committee | CS |
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| Conference Date | 2010/2/22(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Communication Systems (CS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Design and Analysis of Speed-Enhancing Circuit for Visible Light Communication |
| Sub Title (in English) | |
| Keyword(1) | Visible Light Communication |
| Keyword(2) | LED |
| Keyword(3) | driver |
| Keyword(4) | speed-enhancing |
| Keyword(5) | transmission rate |
| 1st Author's Name | Yusuke SHIMOGAKI |
| 1st Author's Affiliation | Graduate School of Science and Technology, Tokyo University of Science() |
| 2nd Author's Name | Yohtaro UMEDA |
| 2nd Author's Affiliation | Graduate School of Science and Technology, Tokyo University of Science |
| 3rd Author's Name | Osamu TAKYU |
| 3rd Author's Affiliation | Graduate School of Science and Technology, Tokyo University of Science |
| 4th Author's Name | Masao NAKAGAWA |
| 4th Author's Affiliation | Department of Information and Computer Science, Faculty of Science and Technology, Keio University |
| Date | 2010-03-01 |
| Paper # | CAS2009-94,SIP2009-139,CS2009-89 |
| Volume (vol) | vol.109 |
| Number (no) | 436 |
| Page | pp.pp.- |
| #Pages | 6 |
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