Joint Estimation Algorithm of Time Offset and Channel Response for Coherent Optical FBMC-OQAM Systems

doi:10.3788/CJL202047.1106001

	Joint Estimation Algorithm of Time Offset and Channel Response for Coherent Optical FBMC-OQAM Systems
	Liu, Junjie 1; Wang, Daobin 1; Tuo, Mingshan 1; Wang, Wei 1; Yuan, Lihua 1; Cao, Minghua 2; Wang, Huiqin 2
刊名	Zhongguo Jiguang/Chinese Journal of Lasers
	2020-11-10
卷号	47 期号:11
关键词	Channel estimation Quadrature amplitude modulation Synchronization Multi carrier systems Offset quadrature amplitude modulations Pseudorandom sequences Spectral efficiencies Time synchronization Time-domain waveforms Training sequence design Transmission performance
ISSN号	02587025
DOI	10.3788/CJL202047.1106001
英文摘要	An innovative joint estimation algorithm for coherent optical filter bank-based multicarrier systems with offset quadrature amplitude modulation was proposed. The training sequence design enables simultaneously time synchronization and channel estimation. Thus, the proposed algorithm effectively improves spectral efficiency. First, the conjugate symmetry condition of the time domain waveform was derived from the system model. Based on the derived condition, a time synchronization method was proposed. The proposed method combines the pseudo-random sequence with conjugate symmetry to improve time synchronization accuracy. Then, channel estimation was performed based on the principle of dual-dependent pilots. The method avoids the impact of intrinsic imaginary interference and maintains the conjugate symmetry of the time domain waveform. Finally, numerical simulations were performed to investigate the system's transmission performance. The simulation results demonstrate that the proposed algorithm can effectively accomplish joint estimation of the time offset and channel response. © 2020, Chinese Lasers Press. All right reserved.
WOS研究方向	Optics
语种	中文
出版者	Science Press
WOS记录号	WOS:000608072500037
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150842]
专题	计算机与通信学院理学院
作者单位	1.School of Science, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Computer and Communication, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Liu, Junjie,Wang, Daobin,Tuo, Mingshan,et al. Joint Estimation Algorithm of Time Offset and Channel Response for Coherent Optical FBMC-OQAM Systems[J]. Zhongguo Jiguang/Chinese Journal of Lasers,2020,47(11).
APA	Liu, Junjie.,Wang, Daobin.,Tuo, Mingshan.,Wang, Wei.,Yuan, Lihua.,...&Wang, Huiqin.(2020).Joint Estimation Algorithm of Time Offset and Channel Response for Coherent Optical FBMC-OQAM Systems.Zhongguo Jiguang/Chinese Journal of Lasers,47(11).
MLA	Liu, Junjie,et al."Joint Estimation Algorithm of Time Offset and Channel Response for Coherent Optical FBMC-OQAM Systems".Zhongguo Jiguang/Chinese Journal of Lasers 47.11(2020).