光通信技术2025，Vol.49Issue(1)：31-37,7.DOI:10.13921/j.cnki.issn1002-5561.2025.01.006
基于OOK和ACO-OFDM的分层混合可见光通信系统
Layered hybrid visible light communication system based on OOK and ACO-OFDM
摘要
Abstract
To improve the spectral efficiency of the system and solve the problem of single signal mode in traditional orthogonal frequency division multiplexing(OFDM)systems,a layered hybrid visible light communication system based on binary on-off keying(OOK)and adaptive constellation optimization(ACO-OFDM)is designed.The transmitting end of the system uses OOK signals to limit the OFDM signal,generating ACO-OFDM and non adaptive constellation optimization(NACO)-OFDM signals.Add the OOK signal as a direct current(DC)bias to the NACO-OFDM signal to ensure that the output is a unipolar real signal.The receiving end adopts signal reconstruction technology,omitting the noise estimation step and reducing the receiving com-plexity to about 1/5 of traditional receivers.The simulation results show that the system can effectively demodulate OFDM and OOK signals,and at the maximum transmission layer,its spectral efficiency is about twice that of conventional single-layer sys-tems.关键词
二进制开关键控/自适应星座图优化-正交频分复用/可见光通信系统/强度调制/直接检测Key words
binary on-off keying/adaptive constellation optimization-orthogonal frequency division multiplexing/visible light communication system/intensity modulation/direct detection分类
电子信息工程引用本文复制引用
肖之雨,荆雷,童峥嵘,杨琨,于建萍,李泽..基于OOK和ACO-OFDM的分层混合可见光通信系统[J].光通信技术,2025,49(1):31-37,7.基金项目
应用光学国家重点实验室开放课题基金项目(SKLA020200-01A02)资助. （SKLA020200-01A02）
