Ms. Meiyuan Miao Profile

Meiyuan Miao

at Dalian Polytechnic Uni

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Proceedings Article | 31 October 2016 Paper

A short-range optical wireless transmission method based on LED

Meiyuan Miao, Ailin Chen, Mingxing Zhu, Ping Li, Yingming Gao, Nianyu Zou

Proceedings Volume 10019, 1001915 (2016) https://doi.org/10.1117/12.2245387

KEYWORDS: Light emitting diodes, Modulation, Binary data, Signal detection, Image transmission, Transmitters, Light, Receivers, Signal processing, Electronic filtering

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As to electromagnetic wave interfere and only one to one transmission problem of Bluetooth, a short-range LED optical wireless transmission method is proposed to be complementary technology in this paper. Furthermore achieved image transmission through this method. The system makes C52 to be the mater controller, transmitter got data from terminals by USB and sends modulated signals with LED. Optical signal is detected by PD, through amplified, filtered with shaping wave from, and demodulated on receiver. Then send to terminals like PC and reverted back to original image. Analysis the performance from peak power and average power, power consumption of transmitter, relationship of bit error rate and modulation mode, and influence of ambient light, respectively. The results shows that image can be received accurately which uses this method. The most distant transmission distance can get to 1m with transmitter LED source of 1w, and the transfer rate is 14.4Kbit/s with OOK modulation mode on stabilization system, the ambient light effect little to LED transmission system in normal light environment. The method is a convenient to carry LED wireless short range transmission for mobile transmission equipment as a supplement of Bluetooth short-range transmission for its ISM band interfere, and the analysis method in this paper can be a reference for other similar systems. It also proves the system is feasibility for next study.

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