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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

Timing Synchronization Algorithm of Coherent Optical Orthogonal Frequency Division Multiplexing System Based on Constant Amplitude Zero Auto-Correlation Sequences

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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.

Newport宣传-MKS新实验室计划
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中图分类号:TN913.7

DOI:10.3788/CJL201946.0406002

所属栏目:光纤光学与光通信

基金项目:天津市自然科学基金(15JCYBJC17000)、河北省教育厅基金重点项目(ZD2017021)

收稿日期:2019-01-07

修改稿日期:2019-01-15

网络出版日期:2019-01-22

作者单位    点击查看

许彦朋:河北工业大学电子信息工程学院, 天津 300401天津市电子材料与器件重点实验室, 天津 300401
刘剑飞:河北工业大学电子信息工程学院, 天津 300401天津市电子材料与器件重点实验室, 天津 300401
曾祥烨:河北工业大学电子信息工程学院, 天津 300401天津市电子材料与器件重点实验室, 天津 300401
卢嘉:河北工业大学电子信息工程学院, 天津 300401天津市电子材料与器件重点实验室, 天津 300401
吴雪琪:河北工业大学电子信息工程学院, 天津 300401天津市电子材料与器件重点实验室, 天津 300401

联系人作者:刘剑飞(jfliu@hebut.edu.cn)

【1】Yuan J G, Li H, Liang T Y, et al. A new algorithm on the frame synchronization error estimation for optical OFDM systems[J]. Journal of Optoelectronic·Laser, 2012, 23(12): 2327-2332.
袁建国, 李好, 梁天宇, 等. 光OFDM系统中一种帧同步误差估计的新算法[J]. 光电子·激光, 2012, 23(12): 2327-2332.

【2】Schmidl T M, Cox D C. Robust frequency and timing synchronization for OFDM[J]. IEEE Transactions on Communications, 1997, 45(12): 1613-1621.

【3】Minn H, Zeng M, Bhargava V K. On timing offset estimation for OFDM systems[J]. IEEE Communications Letters, 2000, 4(7): 242-244.

【4】Park B, Cheon H, Kang C, et al. A novel timing estimation method for OFDM systems[J]. IEEE Communications Letters, 2003, 7(5): 239-241.

【5】Huang Y S, Zhang X G, Xi L X, et al. A modified synchronization scheme for coherent optical OFDM systems[J]. Journal of Optoelectronics·Laser, 2013, 24(3): 514-522.
黄雨莎, 张晓光, 席丽霞, 等. CO-OFDM系统中一种改进的同步算法方案[J]. 光电子·激光, 2013, 24(3): 514-522.

【6】Liu J F, Wang S Y, Zeng X Y, et al. Research on PAPR reduction in O-OFDM systems based on swarm intelligence algorithms[J]. Acta Optica Sinica, 2017, 37(1): 0106006.
刘剑飞, 王少影, 曾祥烨, 等. 基于群智能算法的光OFDM系统PAPR抑制[J]. 光学学报, 2017, 37(1): 0106006.

【7】He C C, Wu Y T, Han M X, et al. A low-complexity SLM scheme for peak-to-average power ratio reduction in IM/DD O-OFDM systems[J]. Acta Optica Sinica, 2018, 38(8): 0806003.
何聪聪, 吴雅婷, 韩梦欣, 等. 一种降低IM/DD O-OFDM系统峰均比功率的低复杂度SLM方案[J]. 光学学报, 2018, 38(8): 0806003.

【8】Chu D. Polyphase codes with good periodic correlation properties (Corresp.)[J]. IEEE Transactions on Information Theory, 1972, 18(4): 531-532.

【9】Wang H, Zhu L, Shi Y, et al. A novel synchronization algorithm for OFDM systems with weighted CAZAC sequence[J]. Journal of Computational Information Systems, 2012, 8(6): 2275-2283.

【10】Silva C E M, Harris F J, Dolecek G J. Synchronization algorithms based on weighted CAZAC preambles for OFDM systems[C]∥13th International Symposium on Communications and Information Technologies (ISCIT), 2013: 192-197.

【11】Ren G L, Chang Y L, Zhang H, et al. Synchronization method based on a new constant envelop preamble for OFDM systems[J]. IEEE Transactions on Broadcasting, 2005, 51(1): 139-143.

【12】Li L, Wu D, Han L, et al. Timing synchronization method based on ES-CAZAC sequences for CO-OFDM system[J]. Journal of Optoelectronic·Laser, 2015, 26(9): 1692-1699.
李莉, 吴迪, 韩力, 等. 基于ES-CAZAC序列的CO-OFDM系统定时同步算法[J]. 光电子·激光, 2015, 26(9): 1692-1699.

引用该论文

Xu Yanpeng,Liu Jianfei,Zeng Xiangye,Lu Jia,Wu Xueqi. 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

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

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