基于高阶循环累积量的OFDM-弹性光网络信号调制格式识别  

Modulation format identification for OFDM-EON signals based on high-order cyclic cumulants

作　　者：陈家佑 白成林 许恒迎 罗清龙 蔡跃进 

机构地区：[1]聊城大学物理科学与信息工程学院山东省光通信科学与技术重点实验室,山东聊城252059

出　　处：《光电子．激光》2017年第9期965-971,共7页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(61501213)资助项目

摘　　要：将高阶循环累积量引入基于正交频分复用(OFDM)的弹性光网络(EON)的调制格式识别中。通过计算OFDM信号不同调制格式(BPSK、QPSK、16QAM和64QAM)的高阶循环累积量,给出了OFDM-EON信号不同调制格式的识别阈值区间,并采用仿真方法验证了该区间的识别准确率。结果表明,利用所提出的识别阈值区间,对波特率为28G的OFDM-EON信号(各子载波随机设置调制格式)进行调制格式识别,在光信噪比(OSNR)为34dB时,子载波调制格式的识别准确率可达到100%。In this paper,the high-order cyclic cumulants are firstly a pplied to the modulation formats identification in Orthogonal frequency division multiplexing （OFDM）-based elast ic optical networking （EON） under the condition of lack of prior information.By calculating the high-order cyclic cumulants of different modulation formats （BP SK,QPSK,16QAM and 64QAM） for OFDM-based EON signals,we propose the identification threshold interval of OFDM -based EON signals with different modulation formats,and verify the identification accuracy by simulation.When t he sub-carriers are modulated randomly by different modulation formats,the identification accuracy for OFDM- based EON signal reaches 100% by using the proposed identification threshold interval with OSNR of 34dB and baud-rate of 28G.

关 键 词：正交频分复用(OFDM) 弹性光网络(EON) 下一代光网络 调制格式识别 高阶循环累积量 

分 类 号：TN913.7[电子电信—通信与信息系统]