论文信息 - A New Lighting Communication System for Audio Signal with White LED

A New Lighting Communication System for Audio Signal with White LED

Light Emitting Diode (LED) is expected as the lighting source of next generation because they are long life, small size, and low power consumption, etc. In previous paper, we proposed a simple visible-light transmission system for sound using white LED. However, the flicker of light is sensed if the transmitted sound signal has the low frequency component. In this study, we propose improved modulation technique to overcome the flicker. LED can transmit audio signal while it is used for lighting source. We verified that it is possible to communicate with the received luminous flux of 1.1×10-5 lm without flicker. We also evaluated the effects of interference by plural LEDs.

Masao Nakagawa | Satoru Ozawa | Atsushi Minato | Shun Liu

[1] Masao Nakagawa,et al. LED road illumination communications system , 2003, 2003 IEEE 58th Vehicular Technology Conference. VTC 2003-Fall (IEEE Cat. No.03CH37484).

[2] Masao Nakagawa,et al. Fundamental analysis for visible-light communication system using LED lights , 2004, IEEE Transactions on Consumer Electronics.

[3] Tsunemasa Taguchi,et al. Illuminance Characteristics of Energy-saving Luminaire with White-Light-Emitting Diode and a Solar-cell and Battery System for Street Lighting , 2001 .

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