摘要
为了降低可见光通信(VLC)系统的误码率,设计了一种基于二进制开关键控(OOK)调制的VLC视频传输系统。该系统采用改进型4B5B编码、后均衡放大电路改善了系统误码性能,拓展了系统的-3 d B带宽,并在自适应阈值判决的基础上分析数据的相关性特征,实现了OOK解调。实验结果表明:系统可以在2 m的距离下实现1080 P高清视频的实时、无失真传输;当传输速率为60 Mb/s时,改进型4B5B编码能将系统无编码时的误码率由2.2×10^(-2)降低至2.81×10^(-6)。
In order to reduce the bit error rate of visible light communication(VLC)systems,a VLC video transmission system based on binary on-off keying(OOK)modulation is designed.This system improves the system's bit error performance and ex-pands the system's-3 dB bandwidth by using an improved 4B5B encoding and post-equalization amplification circuit,and real-izes OOK demodulation by analyzing the correlation characteristics of the data based on adaptive threshold decision.The experi-mental results show that the system can achieve real-time,lossless transmission of 1080 P high definition video at a distance of two meters.When the transmission rate is 60 Mb/s,the improved 4B5B encoding can reduce the bit error rate of the uncoded sys-tem from 2.2×10^(-2) to 2.81×10^(-6).
作者
樊庭冰
涂俊轩
庄济舟
倪慧琳
秦琳玲
吴绍龙
李孝峰
FAN Tingbing;TU Junxuan;ZHUANG Jizhou;NI Huilin;QIN Linling;WU Shaolong;LI Xiaofeng(School of Optoelectronic Science and Engineering,Soochow University,Suzhou Jiangsu 215006,China;Collaborative Innovation Center of Suzhou Nano Science and Technology,Soochow University,Suzhou Jiangsu 215006,China;Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province,Suzhou Jiangsu 215006,China;Key Lab of Modern Optical Technologies of Education Ministry of China,Suzhou Jiangsu 215006,China)
出处
《光通信技术》
北大核心
2024年第3期84-88,共5页
Optical Communication Technology
基金
国家自然科学基金项目(批准号:62075146、62120106001)资助
江苏省自然科学基金项目(批准号:BK20231311)资助。
关键词
可见光通信
开关键控
4B5B编码
相关性分析
视频传输
visible light communication
on-off keying
4B5B encoding
correlation analysis
video transmission
