| Presentation | 2020-11-25 [Invited Lecture] Spatially Parallel Signal Transmission in LED Visible Light Wireless Communications Shigeru Tomisato, Satoshi Denno, Kazuhiro Uehara, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The traffic of wireless communication systems has greatly increased due to the expansion of smartphones and IoT. Visible light wireless communications with LED lighting have been researched to meet such increase. This paper evaluates spatially parallel signal transmission with a lot of LED lighting and photodetectors installed in the same place to expand signal transmission bandwidth in LED visible light communications. Transmission performance of each photodetector is evaluated according to LED lighting and photodetector arrangement, and the number of simultaneously receivable signal streams is estimated based on the evaluation results. In the estimation, square-shaped 25 LEDs with 1 m intervals are arranged within an evaluation area of 5 m square, and 9 photodetectors installed at the same place receive their light to realize spatially parallel signal transmission. The number of receivable signal streams is counted by desired-to-undesired signal power ratios of the evaluation points, where the LED with the strongest light is a desired one, and the other LEDs are undesired ones. The results show that 2 or more signal streams can be received at 97 % evaluation points by appropriately setting the angles among photodetectors according to the set LED lighting interval. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | LED / Visible Light Wireless Communications / Spatially Parallel Transmission |
| Paper # | AP2020-82,RCS2020-121 |
| Date of Issue | 2020-11-18 (AP, RCS) |
| Conference Information | |
| Committee | RCS / AP |
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| Conference Date | 2020/11/25(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. |
| Chair | Eiji Okamoto(Nagoya Inst. of Tech.) / Qiang Chen(Tohoku Univ.) |
| Vice Chair | Fumiaki Maehara(Waseda Univ.) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) / Satoru Kurokawa(AIST) |
| Secretary | Fumiaki Maehara(Kyushu Univ.) / Toshihiko Nishimura(NEC) / Tomoya Tandai(Tokyo Univ. of Agric. & Tech.) / Satoru Kurokawa(NTT DOCOMO) |
| Assistant | Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) / Dr. Kim(Niigata Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Antennas and Propagation |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Invited Lecture] Spatially Parallel Signal Transmission in LED Visible Light Wireless Communications |
| Sub Title (in English) | |
| Keyword(1) | LED |
| Keyword(2) | Visible Light Wireless Communications |
| Keyword(3) | Spatially Parallel Transmission |
| 1st Author's Name | Shigeru Tomisato |
| 1st Author's Affiliation | Okayama University(Okayama Univ.) |
| 2nd Author's Name | Satoshi Denno |
| 2nd Author's Affiliation | Okayama University(Okayama Univ.) |
| 3rd Author's Name | Kazuhiro Uehara |
| 3rd Author's Affiliation | Okayama University(Okayama Univ.) |
| Date | 2020-11-25 |
| Paper # | AP2020-82,RCS2020-121 |
| Volume (vol) | vol.120 |
| Number (no) | AP-248,RCS-249 |
| Page | pp.pp.51-55(AP), pp.66-70(RCS), |
| #Pages | 5 |
| Date of Issue | 2020-11-18 (AP, RCS) |