项目名称： 基于OFDM的弹性光网络系统参数辨识方法及实验研究

项目编号： No.61501213

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 无线电电子学、电信技术

项目作者： 许恒迎

作者单位： 聊城大学

项目金额： 22万元

中文摘要： 数字化、软件化、全动态的基于正交频分复用的弹性光网络（OFDM－EON），是光通信的下一步发展方向。实现对OFDM－EON所发射子载波重要参数的辨识，是进行信息正确解调接收与光性能监测的先决条件。本研究拟明确表征OFDM－EON信号辨识关键特征的规律，进行OFDM－EON信号高阶循环累积量及Stokes星座图特征的提取和分析，建立基于支持向量机分类的OFDM－EON多载波参数辨识机制，最终实现OFDM－EON的子载波数量、调制格式、比特率与带宽、循环前缀长度、有用符号长度等时频参数的智能、快速、稳健识别，并通过仿真和实验手段评估所设计机制及算法的性能。本项目的研究成果将对于实现下一代光通信骨干网弹性光路的相干接收及光性能监测提供重要的理论和技术支持。

中文关键词： 弹性光网络；光正交频分复用；参数辨识；相干接收；光调制

英文摘要： The digital, software-based and fully dynamic elastic optical network based on orthogonal frequency division multiplexing (OFDM－EON) will be the next development orientation of optical communication. So it is the prerequisite for correctly demodulating the received information and optical performance monitoring if the important parameters’ identifications of transmitted OFDM－EON subcarriers are achieved. Firstly, one of the research aims is to characterize the laws of the key recognition features of OFDM－EON signals. Secondly, the research extracts and analyzes the features of higher-order cyclic cumulants and Stokes constellations of OFDM－EON signals. Thirdly, it establishes the muti-carrier parameter identification mechanism of OFDM－EON signals based on support vector machine classification. Finally, the goal would be achieved that we could identify the subcarriers’ number, modulation formats, bitrate, and time-frequency parameters, such as bandwidth, cyclic prefix and useful symbol length of subcarrier, intelligently, quickly and robustly. At the same time, the performance of designed mechanisms and algorithms would be assessed by simulations and experiments. The research results will provide important theoretical and technical support for realizing the coherent receiving of elastic optical path and optical performance monitoring in the next generation optical communication backbone network.

英文关键词： elastic optical network;optical orthogonal frequency division multiplexing;parameters identification;coherent receiving;optical modulation