Design and implementation of LED indoor visible light voice communication system
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1.
School of Computer Science and Telecommunication Engineering, Jiangsu University, Zhenjiang 212013, China
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Received Date:
2013-12-11
Accepted Date:
2014-02-25
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Abstract
As a main illumination tool, light emitting diode (LED) light can be utilized in optical communication system because of the high sensitivity. In order to study and verify the receiving performance and the transmission distance of a LED indoor visible light voice communication system, referring to the channel model of an infrared communication and the effect of the reflected lights, the signal power of the receiving point on the desktop was calculated according to indoor illumination standard by multipath overlay grid algorithm and the sending and receiving circuits of LED visible light voice single-direction communication system was designed and realized. The results show that when the emissive power of LED light is above 2W and the communication rate in the signal physical layer is less than 1Mbit/s, the system is suitable for the actual requirements of the received power and the received signal-noise-rate and can achieve the no-distortion decoding and clear listening in 10m limit. This result is helpful for the research and application of LED visible-light communication systems.
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