一种改进的基于OFDM的PLC-VLC混合网络系统  

Improved PLC-VLC hybrid network system based on OFDM

作　　者：杨立伟 梁雪[1] 赵礼豪 王志立 许文龙 YANG Liwei;LIANG Xue;ZHAO Lihao;WANG Zhili;XU Wenlong(College of Information and Electrical Engineering,China Agricultural University,Beijing 100083,China;College of mechanical and electrical Engineering,Beijing Information Science and Technology University,Beijing 100083,China;School of Information and Communication Engineering,Beijing University of Posts and Telecommunications,Beijing 100083,China)

机构地区：[1]中国农业大学信息与电气工程学院,北京100083 [2]北京信息科技大学机电工程学院,北京100083 [3]北京邮电大学信息与通信工程学院,北京100083

出　　处：《光通信技术》2023年第6期1-5,共5页Optical Communication Technology

基　　金：国家自然科学基金项目(No.61705260)资助;中国农业大学2115人才培养计划项目资助。

摘　　要：为了降低室内电力线通信和可见光通信(PLC-VLC)系统的复杂度并提高系统的稳定性,提出一种改进的基于正交频分复用(OFDM)的PLC-VLC混合网络系统,通过改进双PLC调制器和发光二极管(LED)结构,降低传统混合网络系统的复杂度。搭建了PLC-VLC混合系统的仿真平台,对系统中信号的频谱图、眼图和误码率性能进行仿真分析。仿真结果表明,所提改进的基于OFDM的PLC-VLC混合网络系统中电信号与光信号转换基本不失真,信号传输准确率较高,系统性能良好。In order to reduce the complexity and improve the stability of indoor power line communication and visible light communication(PLC-VLC)systems,an improved PLC-VLC hybrid network system based on orthogonal frequency division multiplexing(OFDM)is proposed.By improving the structure of dual PLC modulator and light emitting diode(LED),the complexity of traditional hybrid network system is reduced.The simulation platform of PLC-VLC hybrid system is built,and the performance of signal spectrum,eye map and bit error rate are simulated and analyzed.The simulation results show that the proposed improved PLC-VLC hybrid network system based on OFDM has no distortion in the conversion of electrical signal and optical signal,high signal transmission accuracy and good system performance.

关 键 词：可见光通信 电力线通信 混合网络 正交频分复用 

分 类 号：TN929[电子电信—通信与信息系统]