LED-based Visible Light Communication System for Low Data Rate Point-and-Grab Applications

Recently, the use of LED-based visible light communication (VLC) for short-range and low data rate applications has become an area of great interest for research and development communities. LED-based VLC systems consume less power and offer more secure communication link when compared with other wireless technologies. This article introduces the use of LED-based VLC systems for "point-and-grab" applications using smartphones and photodiodes. Different real life point-and-grab application scenarios, with one in particular relating to restaurant-consumer communication, are discussed where LED-based VLC can act as potential replacement for existing bluetooth or infrared technologies. A low cost photodiode dongle is developed to be used with smartphones which can provide reasonably high data rates for new possible commercial applications discussed in this paper. The data rates achieved by the developed test bed supplants the existing limitations on rates achievable by smartphone cameras. Experiments with the test bed are performed with the achievable rates of 1 Mbps which are greater than the highest achievable rates of up to 3 kbps with smartphone camera only. The proposed test-bed is also used for experimental measurement of different design characteristics like baud rate and symbol error rate, and to study the impact of several design parameters like tilt angle and range on the former characteristics.

[1]  Stefan Schmid,et al.  Connecting networks of toys and smartphones with visible light communication , 2014, IEEE Communications Magazine.

[2]  Stefan Mangold,et al.  Networking Smart Toys with Wireless ToyBridge and ToyTalk , 2011 .

[3]  Lutz H.-J. Lampe,et al.  Physical-layer security for indoor visible light communications , 2014, 2014 IEEE International Conference on Communications (ICC).

[4]  Rui L. Aguiar,et al.  Visible Light Communication for Advanced Driver Assistant Systems , 2006 .

[5]  Muhammad Adeel Pasha,et al.  Indoor positioning system designs using visible LED lights: performance comparison of TDM and FDM protocols , 2015 .

[6]  Harald Haas,et al.  Using a CMOS camera sensor for visible light communication , 2012, 2012 IEEE Globecom Workshops.

[7]  Nils Ole Tippenhauer,et al.  Toys communicating with LEDs: Enabling toy cars interaction , 2012, 2012 IEEE Consumer Communications and Networking Conference (CCNC).

[8]  Anthony Rowe,et al.  Hybrid visible light communication for cameras and low-power embedded devices , 2014, VLCS@MobiCom.

[9]  Fuqiang Liu,et al.  Vehicular Visible Light Communications with LED Taillight and Rolling Shutter Camera , 2014, 2014 IEEE 79th Vehicular Technology Conference (VTC Spring).

[10]  Harald Haas,et al.  Indoor broadcasting via white LEDs and OFDM , 2009, IEEE Transactions on Consumer Electronics.

[11]  Chung Ghiu Lee,et al.  Demonstration of visible light communication link for audio and video transmission , 2010, 2010 Photonics Global Conference.

[12]  H. Harry Asada,et al.  A dual-use visible light approach to integrated communication and localization of underwater robots with application to non-destructive nuclear reactor inspection , 2012, 2012 IEEE International Conference on Robotics and Automation.

[13]  Harald Haas,et al.  Indoor optical wireless communication: potential and state-of-the-art , 2011, IEEE Communications Magazine.

[14]  Masao Nakagawa,et al.  Integrated system of white LED visible-light communication and power-line communication , 2003, IEEE Trans. Consumer Electron..

[15]  Anthony Rowe,et al.  Visual light landmarks for mobile devices , 2014, IPSN-14 Proceedings of the 13th International Symposium on Information Processing in Sensor Networks.

[16]  Muhammad Adeel Pasha,et al.  Highly accurate 3D wireless indoor positioning system using white LED lights , 2014 .