中国激光, 2019, 46 (4): 0406002, 网络出版: 2019-05-09   

基于恒幅零自相关序列的相干光正交频分复用系统定时同步算法 下载: 898次

Timing Synchronization Algorithm of Coherent Optical Orthogonal Frequency Division Multiplexing System Based on Constant Amplitude Zero Auto-Correlation Sequences
许彦朋 1,2,*刘剑飞 1,2,*曾祥烨 1,2卢嘉 1,2吴雪琪 1,2
作者单位
1 河北工业大学电子信息工程学院, 天津 300401
2 天津市电子材料与器件重点实验室, 天津 300401
摘要
提出了一种基于恒幅零自相关(CAZAC)序列的定时同步算法。该算法的CAZAC训练序列由4部分构成,分为6个定时窗口,利用序列的共轭对称和偶对称特性进行相关运算,通过6个窗口相乘得到定时度量函数。仿真结果表明,利用所提算法可获得具有唯一脉冲状峰值的定时度量函数曲线,消除了定时平台以及旁瓣干扰。同时,在信噪比和色散较大的变化范围内,所提算法仍具有较好的定时稳定性。
Abstract
A novel timing synchronization algorithm is proposed based on constant amplitude zero auto-correlation (CAZAC) sequence. In the proposed algorithm, the training sequence consists of four CAZAC sequences, which are divided into six timing windows. The correlation operation is carried out by use of the characteristics of conjugate symmetry and even symmetry of the sequences, and the timing metric function is obtained by multiplying these six timing windows. The simulation results show that the proposed algorithm can be used to obtain the timing metric function curve with the unique pulse peak and eliminate the disturbance of timing plateaus and side lobes. Meanwhile, the proposed algorithm has good timing stability within a large range of optical signal-to-noise ratio and chromatic dispersion.

许彦朋, 刘剑飞, 曾祥烨, 卢嘉, 吴雪琪. 基于恒幅零自相关序列的相干光正交频分复用系统定时同步算法[J]. 中国激光, 2019, 46(4): 0406002. Yanpeng Xu, Jianfei Liu, Xiangye Zeng, Jia Lu, Xueqi Wu. Timing Synchronization Algorithm of Coherent Optical Orthogonal Frequency Division Multiplexing System Based on Constant Amplitude Zero Auto-Correlation Sequences[J]. Chinese Journal of Lasers, 2019, 46(4): 0406002.

本文已被 1 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!