Presentation 2023-01-19
[Short Paper] Symbol Timing Synchronization for Optical Camera Communication with Rolling Shutter
Akito Higa, Daisuke Hisano, Yu Nakayama,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Optical Camera Communications (OCC) is a technology that provides a license-free communication channel that does not use radio waves. The rolling shutter mechanism is expected to improve the net data rate in OCC. However, in rolling shutter, there is a period of time between frames when no exposure is done, called the waiting time. Since signal reception stops during this period, signal loss occurs in continuous signal transmission. However, there has been no research focusing on this signal loss. Therefore, We proposes a symbol timing synchronization method for OCC using a rolling shutter camera. The transmitter sends a preamble for synchronization followed by a data signal, and the receiving camera calculates an additional wait time from the received preamble image to synchronize with the start timing of the data signal. The contribution of this work is the development of the first symbol timing synchronization technology for lossless signal transmission using a rolling shutter. We theoretically analyzed the limitations of the proposed method due to clock errors and evaluated its performance using actual equipment.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Visible light communication / Wireless communication / Cameras / CMOS image sensors
Paper # SeMI2022-73
Date of Issue 2023-01-12 (SeMI)

Conference Information
Committee SeMI
Conference Date 2023/1/19(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Naruto grand hotel
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Koji Yamamoto(Kyoto Univ.)
Vice Chair Kazuya Monden(Hitachi) / Yasunori Owada(NICT) / Shunsuke Saruwatari(Osaka Univ.)
Secretary Kazuya Monden(NTT DOCOMO) / Yasunori Owada(Tokyo Univ. of Agri. and Tech.) / Shunsuke Saruwatari(Osaka Univ.)
Assistant Yuki Matsuda(NAIST) / Akihito Taya(Aoyama Gakuin Univ.) / Takeshi Hirai(Osaka Univ.)

Paper Information
Registration To Technical Committee on Sensor Network and Mobile Intelligence
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) [Short Paper] Symbol Timing Synchronization for Optical Camera Communication with Rolling Shutter
Sub Title (in English)
Keyword(1) Visible light communication
Keyword(2) Wireless communication
Keyword(3) Cameras
Keyword(4) CMOS image sensors
1st Author's Name Akito Higa
1st Author's Affiliation Tokyo University of Agriculture and Technology(Tokyo Univ. of Agriculture and Tech)
2nd Author's Name Daisuke Hisano
2nd Author's Affiliation Osaka University(Osaka Univ.)
3rd Author's Name Yu Nakayama
3rd Author's Affiliation Tokyo University of Agriculture and Technology(Tokyo Univ. of Agriculture and Tech)
Date 2023-01-19
Paper # SeMI2022-73
Volume (vol) vol.122
Number (no) SeMI-341
Page pp.pp.14-18(SeMI),
#Pages 5
Date of Issue 2023-01-12 (SeMI)