Abstract
A visible light communication system for parallel transmission of high-quality audio and video signals using
illumination white and red light-emitting diodes (LEDs) is presented in this paper. For video transmission, we
adopts the pulse width modulation (PWM) scheme at the carrier frequency of 15 MHz, whereas for the analog
audio signal, the Sony/Philips Digital standard is used. We show that successful simultaneous high-quality audio
and video signal transmissions over a link span of 50 cm are possible without the need for optimized optics. For
audio transmission, only the link span is doubled to 100 cm.
Keywords:Optical communication; Visible light communication (VLC); Audio transmission; Video transmission;
Digital audio; PWM video; Light-emitting diodes (LEDs)