FPGA-based PPM modulated visible light image transmission system

HE Jiaxiang; WAN Shengpeng; SONG Zaobiao; YANG Siyu; XU Jin

doi:10.5768/JAO201940.0108002

Journal of Applied Optics > 2019 > 40(1): 162-166. > DOI: 10.5768/JAO201940.0108002

HE Jiaxiang, WAN Shengpeng, SONG Zaobiao, YANG Siyu, XU Jin. FPGA-based PPM modulated visible light image transmission system[J]. Journal of Applied Optics, 2019, 40(1): 162-166. DOI: 10.5768/JAO201940.0108002

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FPGA-based PPM modulated visible light image transmission system

Jiangxi Provincial Photoelectric Detection Technology Engineering Laboratory, Nanchang Aeronautical University, Nanchang 330063, China

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Received Date: August 29, 2018
Revised Date: September 24, 2018

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Abstract

Abstract

A 5 Mbit/s 2-pulse position modulation(PPM) modulated visible light image transmission system was realized, using field-programmable gate array (FPGA) as the main control chip. The whole system was divided into two modules: transmitter and receiver, all of which were implemented by FPGA.Firstly, the processed picture signal was sent to the FPGA through the serial port by the host computer, and modulated into 2-PPM signal, the signal transmission data frame format was designed, then modulated onto the red light emitting diode (LED) and sent out. Secondly, at the receiving end, the synchronization and demodulation of the data signal were completed according to the data frame format, and the image recovered after demodulation was displayed on the liquid crystal screen. Experiments show that the system can realize the transmission of visible light image signals.
- visible light communication,
- pulse position modulation,
- field-programmable gate array,
- modulation and demodulation

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FPGA-based PPM modulated visible light image transmission system