基于双平行相位调制器的OFDM-ROF系统仿真  

OFDM-ROF System Simulation Based on Double Parallel Phase Modulator

作　　者：刘昊 余艳芳[2] 吴君钦[2] 

机构地区：[1]广州宽带主干网络有限公司,广东广州510663 [2]江西理工大学信息工程学院,江西赣州341000

出　　处：《电视技术》2013年第5期75-77,81,共4页Video Engineering

基　　金：国家自然科学基金项目(11062002);江西省自然科学基金项目(2008GZS0030)

摘　　要：建立一种基于双平行相位调制器的OFDM-ROF实验仿真系统。在中心站采用双平行相位调制器产生双边带光载毫米波,利用光交错复用器将信号进行上边带和下边带分离,将OFDM信号通过马赫曾德尔调制器调制到一个边带上进行传输。OFDM的调制和解调部分使用MATLAB软件编写,OFDM-ROF系统实验仿真平台基于软件Optisystem进行搭建,并给出了光载OFDM信号的产生模型和系统仿真结果。实验表明,OFDM-ROF系统经过色散补偿后大幅度提高了系统的传输距离。A simulation system of OFDM-ROF based on dual phase modulator is established. In the center station, double sideband optical millimeter wave signal is generated utilizing dual phase modulator,which separates the upper and lower sidebands with light inter leaver. The OFDM signal is modu- lated through a Mach-Zehnder modulator onto one of the two optical carriers and transported along optical fiber. The module of modulation and demodula- tion of OFDM is established by using Maflab software and Optisystem software for the system. A model about optical carrier OFDM generation and simula- tion results are given. The results show that the transmission distance of the system is geafly improved by the disoersion comoensation.

关 键 词：正交频分复用 光纤无线通信 光载毫米波 相位调制器 

分 类 号：TN929.11[电子电信—通信与信息系统]