Laser & Optoelectronics Progress, Volume. 54, Issue 5, 50602(2017)
Long-Distance Visible Light Communication Based on Light Emitting Diode Source
A long-distance outdoor communication experiment based on a commercial light-emitting diode (LED) source is carried out. In the experiment, the LED source is modulated by on-off keying (OOK) modulation. The low-density parity-check (LDPC) error-correcting code is used at the receiver. The outdoor light communication experiment with communication distance of 1 km is accomplished at clear daytime when the beam of LED is launched with divergence angle of 3° and modulation rate of 23 MHz (net data transmission rate is 11.5 Mbit/s), and the bit error rate of 10-6 is achieved. The experimental result shows that the data transmission rate with LDPC (4000, 2000) code is 2.4 times than that without coding when the bit error rate is 10-4. The experimental system is not need to accurate collimation and can overcome the negative environmental consequences such as the wind shaking and the atmospheric turbulence.
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Zhang Yufei, Zhang Hongming, Wang Peng, Liu Tao, Sun Dedong, Song Jian. Long-Distance Visible Light Communication Based on Light Emitting Diode Source[J]. Laser & Optoelectronics Progress, 2017, 54(5): 50602
Category: Fiber Optics and Optical Communications
Received: Dec. 12, 2016
Accepted: --
Published Online: May. 3, 2017
The Author Email: Yufei Zhang (zhangyf15@mails.tsinghua.edu.cn)