New wireless communication system: What is Visible Light Wireless Communication?

Dr Yasuhiko Hayashi (Engineering Department)

Saturday, 12 November, 2005; 7:30-9:30pm

Seminar room, No1. Newnham Terrace, Darwin College

Visible Light Wireless Communication (VLWC) is the most advanced communication technology using "Visible Light"; the visible light (wavelength: 380nm - 780nm) everywhere around our daily life. We are heavily relying on our eyes to gather almost all information for our day-to-day activities. The data can be transmitted by lighting light emitting diode (LED) or laser diode (LD) on and off at ultra high speed.
And, the digital camera and the camera on cell phones, which are popular now, are very excellent system to receive the visible light in future. By using the visible light for the data transmission, many problems related to radio and infrared communications are solved. The VLWC has characteristics to be ubiquitous, transmitted at ultra high speed and harmless for human body and electronic devices, compared to those by radio and infrared communications. This talk will focus on the introduction of VLWC and its applications, such as LED light communication, ubiquitous communication and Intelligent Transport Systems (ITS).