可见光通信
误码率
千兆位
光学
发射机
计算机科学
前向纠错
自由空间光通信
带宽(计算)
光通信
传输(电信)
数据传输
频道(广播)
电信
物理
发光二极管
解码方法
计算机硬件
作者
Junhui Hu,Fangchen Hu,Junlian Jia,Guoqiang Li,Jianyang Shi,Junwen Zhang,Ziwei Li,Nan Chi,Shaohua Yu,Chao Shen
出处
期刊:Optics Express
[The Optical Society]
日期:2022-01-26
卷期号:30 (3): 4365-4365
被引量:26
摘要
Visible light communication (VLC), combining wireless communication with white lighting, has many advantages. It is free of electromagnetic interference, is rich in spectrum resources, and has a gigabit-per-second (Gbps) data rate. Laser diodes (LDs) are emerging as promising light sources for high-speed VLC communication due to their high modulation bandwidth. In this paper, we demonstrate a red/green/blue (R/G/B) LDs based VLC system with a recorded data rate of 46.41 Gbps, employing discrete multitone (DMT) and adaptive bit-loading technology to achieve high spectral efficiency (SE). The emission characteristics and transmission performance of R/G/B-LDs are discussed. The optimal data rates of R/G/B-LDs channels are 17.168/14.652/14.590 Gbps, respectively. The bit-error-ratio (BER) of each channel satisfies the 7% forward-error-correction (FEC) threshold (3.8×10-3) and greatly approaches the channel Shannon limit.
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