| Presentation | 2014-08-20 Multi-level Amplitude Sift Keying using Spatial Combining for the Visible-Light Communication System with an LED-backlighted Signboard Yuto JINNO, Kentaro KOBAYASHI, Hiraku OKADA, Masaaki KATAYAMA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This manuscript proposes a new Visible-Light Communication (VLC) system that transmits information to handheld terminals carried by pedestrians through the use of LED backlighted signboards located in public spaces. To improve previous systems proposed by us, we introduce the use of multilevel modulation. Specifically, in order to avoid the effect of nonlinearity of LEDs, we apply binary baseband modulation to LED by FET switching. We propose a scheme that realizes multilevel amplitude modulation by spatially combining the binary light signals. In order to evaluate the performance, multiple LED lights and a diffuser board are employed to set the experimental environment. In the experiment, we found out that the duty cycle of the ON/OFF switching of the LEDs affects the output voltage of the photoelectric converter. Thus, we apply a scheme that makes those duty cycles become uniform. Consequently, 4-level amplitude modulation is achieved, and our experimental result shows that a t a transmission rate of 5Mbps the bit error rate becomes lower than 10^<-3>. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Visible-Light Communication (VLC) / LED-backlighted sign board / Spatial Combinig / Multi-level Amplitude Shift Keing |
| Paper # | RCS2014-147 |
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| Committee | RCS |
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| Conference Date | 2014/8/12(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Radio Communication Systems (RCS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Multi-level Amplitude Sift Keying using Spatial Combining for the Visible-Light Communication System with an LED-backlighted Signboard |
| Sub Title (in English) | |
| Keyword(1) | Visible-Light Communication (VLC) |
| Keyword(2) | LED-backlighted sign board |
| Keyword(3) | Spatial Combinig |
| Keyword(4) | Multi-level Amplitude Shift Keing |
| 1st Author's Name | Yuto JINNO |
| 1st Author's Affiliation | Department of Electrical Engineering: and Computer Science, Nagoya University() |
| 2nd Author's Name | Kentaro KOBAYASHI |
| 2nd Author's Affiliation | EcoTopia Science Institute, Nagoya University |
| 3rd Author's Name | Hiraku OKADA |
| 3rd Author's Affiliation | EcoTopia Science Institute, Nagoya University |
| 4th Author's Name | Masaaki KATAYAMA |
| 4th Author's Affiliation | EcoTopia Science Institute, Nagoya University |
| Date | 2014-08-20 |
| Paper # | RCS2014-147 |
| Volume (vol) | vol.114 |
| Number (no) | 180 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |