16QAM相干光检测OFDM系统性能研究  

Research on 16QAM-COOFDM system

作　　者：房晓飞[1] 刘毓[2] 梁猛[1] 

机构地区：[1]西安邮电大学电子工程学院,陕西西安710121 [2]西安邮电大学通信与信息工程学院,陕西西安710121

出　　处：《电子设计工程》2015年第7期189-192,共4页Electronic Design Engineering

摘　　要：利用Optisystem软件结合Matlab,搭建相干检测光正交频分复用(Coherent Optical Orthogonal Frequency Division Multiplexing)系统仿真平台。通过加入训练序列学习出不同频率信号的相位噪声规律并进行补偿,结合传输距离、光源线宽,研究了基于16QAM调制的相干光检测OFDM系统的传输性能。结果表明,16QAM调制下的相干光检测OFDM系统做简单的基于训练的信道估计与均衡处理下,系统误码性能提高了近两个数量级。预示了在高速长距离光纤通信中相干光检测OFDM系统的良好前景。Based on Optisystem software and Matlab, a simulation of CO-OFDM （Coherent Optical Orthogonal Frequency Division Multiplexing） system simulation platform is established. Through the training sequence to learn phase noise of different frequency signals and then compensate, combined with transmission rate, light width, study the transmission performance of coherent optical detection OFDM system which based on 16QAM modulation. The results show that, the coherent optical detection OFDM system based on simple training under 16QAM modulation channel estimation and equalization process, the system performance is greatly improved. Foreshadowed that coherent optical detection OFDM systems in the high-speed long-distance optical fiber communication has good prospects.

关 键 词：相干光检测正交频分复用 16QAM 训练序列 相位噪声补偿 

分 类 号：TN919[电子电信—通信与信息系统]