一种CO-OFDM光纤通信定时同步算法  

A Timing Synchronization Algorithm for CO-OFDM Optical Fiber Communications

作　　者：梁娟[1] 杨杨 LIANG Juan;YANG Yang(Department of Information Engineering Fujian Agriculture Forestry University DongfangCollege, Fujian Fuzhou ,350715 CHN;Hubei Key Laboratory of InteUigetitWireless Communications ,School of Electronic Information Engineering ,South-Central University for Nationalities, Wuhan 430074, CHN)

机构地区：[1]福建农林大学东方学院信息工程系,福建福州350715 [2]中南民族大学电子信息工程学院智能无线通信湖北省重点实验室,湖北武汉430074

出　　处：《光电子技术》2019年第2期95-100,共6页Optoelectronic Technology

基　　金：福建省教育厅中青年教师教育科研项目(JAT170899);国家自然科学基金(青年)项目(61801523)

摘　　要：针对传统算法在信噪比(SNR)较低且存在传输色散的场景同步误差大的问题,发现了一种基于反正切运算的伪随机序列,能够对传统的Awoseyila定时同步算法进行优化,同时借鉴ES-CAZAC序列的部分思想,提出反正切伪随机序列CO-OFDM光纤传输定时同步算法。仿真实验表明,所提算法可以在低SNR和传输色散场景下有效降低定时同步误差。A novel pseudo-random preamble aided timing estimation via arc-tangent operation for CO-OFDM was proposed to tackle with the problems of lower SNR and more synchro errors under the context of transmission dispersion existing in traditional algorithm. The Awoseyila's algorithm could be optimized via the proposed method. Moreover, with using the line of ESCAZAC preamble for reference, the arc-tangent pseudo-random preamble was proposed. Simulations were showed that the proposed method had much lower estimation error than traditional methods.

关 键 词：相干光正交频分复用光纤传输 光纤传输定时同步 伪随机序列定时同步 

分 类 号：TN914[电子电信—通信与信息系统]