Changchun Institute of Optics,Fine Mechanics and Physics,CAS
| Likelihood based synchronization algorithms in optical pulse position modulation systems with photon-counting receivers | |
| Y. T. Li; T. W. Geng and S. J. Gao | |
| 2022 | |
| 发表期刊 | Optics Express
 |
| ISSN | 1094-4087 |
| 卷号 | 30期号:17页码:31472-31485 |
| 摘要 | Deep space optical communication (DSOC) is becoming a hot topic. Pulse position modulation (PPM) is an effective tool to realize DSOC benefiting from the feature of high sensitivity. In this paper, we analyze 2 x 1 optical PPM systems with photon-counting detectors, where the distance difference between the two links causes asynchronous superpositions at the receiving end. Two synchronization algorithms are proposed to estimate the time offsets of the two links, which are the optimal Global Maximum Likelihood Estimation (GMLE) and the suboptimal Integer Comparison - Fractional Likelihood Estimation (ICFLE). The complexities of the two methods are also compared. In order to measure the two proposed algorithms, the Cramer-Rao bounds (CRB) are derived. According to simulation results, both the two proposed algorithms approach the deduced CRBs. Furthermore, an equivalent experiment is designed to verify the feasibility and effectiveness of the proposed algorithms. It's also indicated that the proposed algorithms may be utilized in practical systems. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement |
| DOI | 10.1364/oe.467571 |
| URL | 查看原文 |
| 收录类别 | sci ; ei |
| 语种 | 英语 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ciomp.ac.cn/handle/181722/66810 |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | Y. T. Li,T. W. Geng and S. J. Gao. Likelihood based synchronization algorithms in optical pulse position modulation systems with photon-counting receivers[J]. Optics Express,2022,30(17):31472-31485. |
| APA | Y. T. Li,&T. W. Geng and S. J. Gao.(2022).Likelihood based synchronization algorithms in optical pulse position modulation systems with photon-counting receivers.Optics Express,30(17),31472-31485. |
| MLA | Y. T. Li,et al."Likelihood based synchronization algorithms in optical pulse position modulation systems with photon-counting receivers".Optics Express 30.17(2022):31472-31485. |
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| Likelihood based syn（10276KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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