ZHANG Min1, LUO Pengfei2, FENG Shulan2, ZHANG Philipp3
1. State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts & Telecommunications, Beijing 100876, China;
2. Research Department of HiSilicon, HiSilicon Technologies Co. (Beijing), Ltd., Beijing 100085, China;
3. Research Department of HiSilicon, HiSilicon Technologies Co. (USA), Ltd., Plano, Texas 75075, USA
Abstract：Visible light communication (VLC) technology, which provides green lighting and data communication functions, is one of the most vibrant research topics in optical wireless communications. Since the popularity of smartphones, imaging sensor-based VLC (or optical camera communication, OCC) is receiving more and more attention and investigation. Such OCC technology has the ability to separate light signals coming from the different angles of incidence, thus shows an extensive application prospect in many areas. The OCC has lots of differences from the traditional single photodiode-based VLC system, not only in signal processing filed but also in modulation and other domains. Therefore, we have to develop dedicated techniques to support the OCC. This paper reviews some key techniques in OCC system, and discusses the application scenarios of this system.
[1] Jovicic A, Li J, Richardson T. Visible light communication:Opportunities, challenges and the path to market[J]. Communications Magazine, IEEE, 2013, 51(12):26-32.
[2] Grobe L, Paraskevopoulos A, Hilt J, et al. High-speed visible light com-munication systems[J]. Communications Magazine, IEEE, 2013, 51(12):60-66.
[3] Ghassemlooy Z, Popoola W, Rajbhandari S. Optical wireless communications:System and channel modelling with Matlab[M]. Boca Raton, FL:CRC Press, 2012:35-75.
[4] Thorlabs. CCD and CMOS cameras operation manual and SDK[EB/OL].[2016-05-03]. https://www.thorlabschina.cn/_sd.cfm?path=ITN&filename=ITN000563-D02.pdf&partnumber=DCC1645C.
[5] Permalink. Field of View (FOV) of cameras in iOS devices[EB/OL]. 2013-02-22[2016-05-03]. https://www.boinx.com/chronicles/2013/3/22/fieldof-view-fov-of-cameras-in-ios-devices.
[6] Roberts R D. Undersampled frequency shift ON-OFF keying (UFSOOK) for camera communications (CamCom)[C]//Proceedings of the Wireless and Optical Communication Conference (WOCC). Chongqing:IEEE, 2013:645-648.
[7] Yang Z, Wang Z, Zhang J, et al. Wearables can afford:Light-weight in-door positioning with visible light[C]//Proceedings of the 13th Annual In-ternational Conference on Mobile Systems, Applications, and Services. Florence:ACM, 2015:317-330.
[8] Danakis C, Afgani M, Povey G, et al. Using a CMOS camera sensor for vis-ible light communication[C]//Proceedings of the Globecom Workshops (GC Wkshps). Anaheim:IEEE, 2012:1244-1248.
[9] Luo P, Zhang M, Ghassemlooy Z, et al. Experimental demonstration of a 1024-QAM optical camera communication system[J]. Photonics Technolo-gy Letters, IEEE, 2016, 28(2):139-142.
[10] Luo P, Zhang M, Ghassemlooy Z, et al. Experimental demonstration of RGB LED-based optical camera communications[J]. IEEE Photonics Journal, 2015, 7(5):1-12.
[11] Hu P, Pathak P H, Feng X, et al. ColorBars:Increasing data rate of LEDto-camera communication using color shift keying[C]//The 11th Interna-tional Conference on emerging Networking EXperiments and Technolo-gies. Heidelberg:ACM, 2015:1-12.
[12] Schöberl M, Brückner A. Photometric limits for digital camera systems[J]. Journal of Electronic Imaging, 2012, 21(21):020501-3.
[13] Canon. The Canon EOS-1Ds MARK Ⅱ:The absolute pinnacle of D-SLR design and performance[EB/OL].[2016-05-03]. http://cpn.canon-eu-rope.com/files/news/pro_lineup/EOS-1Ds-MkII-Whitepaper.pdf.
[14] Luo P, Ghassemlooy Z, Minh H L, et al. Undersampled phase shift ONOFF keying for camera communication[C]//Proceedings of the Wireless Communications and Signal Processing (WCSP). Hefei:IEEE, 2014:1-6.
[15] Roberts R D. A MIMO protocol for camera communications (CamCom) using undersampled frequency shift ON-OFF keying (UFSOOK)[C]//Pro-ceedings of the Globecom Workshops (GC Wkshps). Atlanta:IEEE, 2013:1052-1057.
[16] Bongiorno D L, Bryson M, Dansereau D G, et al. Spectral characteriza-tion of COTS RGB cameras using a linear variable edge filter[C]//Pro-ceedings of the IS&T. Burlingame:SPIE,2013:86600N-86600N-10.
[17] Luo P, Ghassemlooy Z, Hoa Le M, et al. Experimental demonstration of an indoor visible light communication positioning system using dualtone multi-frequency technique[C]//Proceedings of the Optical Wireless Communications (IWOW). Funchal, Portugal:IEEE, 2014:55-59.
[18] Armstrong J, Sekercioglu Y A, Neild A. Visible light positioning:A road-map for international standardization[J]. Communications Magazine, IEEE, 2013, 51(12):68-73.
[19] Papadimitratos P, La Fortelle A, Evenssen K, et al. Vehicular communi-cation systems:Enabling technologies, applications, and future outlook on intelligent transportation[J]. Communications Magazine, IEEE, 2009, 47(11):84-95.
[20] Bai F, Stancil D D, Krishnan H. Toward understanding characteristics of dedicated short range communications (DSRC) from a perspective of ve-hicular network engineers[C]//Proceedings of the the Sixteenth Annual International Conference on Mobile Computing and Networking. Chicago:ACM, 2010:329-340.
[21] You S H, Chang S H, Lin H M, et al. Visible light communications for scooter safety[C]//Proceedings of the 11th Annual International Confer-ence on Mobile Systems, Applications, and Services. Taipei:ACM, 2013:509-510.
[22] Agarwal A, Little T D C. Role of directional wireless communication in vehicular networks[C]//Proceedings of the intelligent vehicles sympo-sium. San Diego:IEEE, 2010:688-693.
[23] Ji P, Tsai H M, Wang C, et al. Vehicular visible light communications with LED taillight and rolling shutter camera[C]//Proceedings of the IEEE Vehicular Technology Conference (VTC Spring). Seoul:IEEE, 2014:1-6.
[24] Yamazato T, Takai I, Okada H, et al. Image-sensor-based visible light communication for automotive applications[J]. Communications Maga-zine, IEEE, 2014, 52(7):88-97.
2016, Vol. 34 
