|
|
论文:2018,Vol:36,Issue(5):904-910 |
|
|
引用本文： |
|
|
姚如贵, 蒋朋飞, 马骏, 潘世洲. 面向光通信的物理帧格式设计与同步算法研究[J]. 西北工业大学学报 |
|
|
Yao Rugui, Jiang Pengfei, Ma Jun, Pan Shizhou. Exploring Physical Frame Format Design and Synchronization Algorithm for Optical Communication[J]. Northwestern polytechnical university |
|
|
|
|
|
|
|
| 面向光通信的物理帧格式设计与同步算法研究 |
|
| 姚如贵1, 蒋朋飞1, 马骏2, 潘世洲1 |
|
1. 西北工业大学 电子信息学院, 陕西 西安 710072;
2. 中航工业西安飞行自动控制研究所, 陕西 西安 710065 |
| 摘要: |
| 空间光通信具有保密性好，信息容量大，抗干扰能力强等优点，是现代通信系统研究的热点之一。脉冲位置调制（pulse position modulation，PPM）是空间光通信系统中一种性能优良的调制方式。针对空间光通信系统中信息传输速率低，设计了一种改进的"空-空-零"的物理帧格式，以提高空间光通信系统的传输速率。针对实际空间激光数字接收机，深入开展了帧同步算法设计研究。结合设计的物理帧格式，重点研究了帧同步算法的设计，为了应对噪声等参数的变化，提出自适应相关阈值设置；考虑到工程实现，提出了一种相关滤波简化实现方法等。最后，基于FPGA完成了接收机原型系统设计，经Matlab仿真、在线仿真以及实际测试表明了该设计方案的正确性和可靠性。 |
| 关键词:
PPM
物理帧格式
匹配滤波
帧同步
自适应相关阈值
光通信
|
|
| Exploring Physical Frame Format Design and Synchronization Algorithm for Optical Communication |
|
| Yao Rugui1, Jiang Pengfei1, Ma Jun2, Pan Shizhou1 |
|
1. School of Electronics and Information, Northwestern Polytechnical University, Xi'an 710072, China;
2. AVIC Xi'an Flight Automatic Control Research Institute, Xi'an 710065, China |
| Abstract: |
| Space optical communication has been a hot topic in modern communication system research, because it has many advantages, such as good secrecy, large information capacity, strong anti-interference ability, and so on. Pulse position modulation (PPM) is an excellent modulation method. In view of the low rate of information transmission by a space optical communication system, an improved "empty-empty-zero" physical frame format is designed to improve its transmission rate. In view of the actual space laser digital receiver, the frame synchronization algorithm is designed in this paper. Based on the physical frame format, this paper focuses on the design of frame synchronization algorithm. In order to deal with the change of noise and other parameters, an adaptive threshold setting is proposed. Considering the engineering implementation, a simplified correlation filtering implementation method is proposed. Finally, we designed the reception prototype system based on FPGA. The Matlab simulation, online simulation and experimental verification prove that the proposed method is correct and reliable. |
| Key words:
pulse position modulation
physical frame format
correlation filtering
frame synchronization
adaptive threshold setting
optical communication
|
|
| 收稿日期: 2017-09-09
修回日期:
|
| DOI: |
| 基金项目: 国家自然科学基金（61501376，61701407）、中央高校基本科研业务费专项基金（3102017JG02002，3102017HQZZ016）和航天科学技术基金（2017-HT-XG）资助 |
| 通讯作者:
Email： |
| 作者简介: 姚如贵(1980-),西北工业大学副教授、博士,主要从事无线通信技术及通信信号处理研究。
|
|
|
|
|
|
|
|
参考文献: |
|
|
[1] Zeng Z, Fu S, Zhang H, et al. A Survey of Underwater Optical Wireless Communications[J]. IEEE Communications Surveys & Tutorials, 2017, 19(1):204-238
[2] 丁德强, 柯熙政. 大气激光通信PPM调制解调系统设计与仿真研究[J]. 光通信技术, 2005, 29(1):50-52 Ding Deqiang, Ke Xizheng. Design of PPM for Laser Communication in Atmosphere[J]. Optical Communication Technology, 2005, 29(1):50-52(in Chinese)
[3] 吴从均, 颜昌翔, 高志良. 空间激光通信发展概述[J]. 中国光学, 2013, 6(5):670-680 Wu Congjun, Yan Changxiang, Gao Zhiliang. Overview of Space Laser Communication[J]. Chinese Optics, 2013, 6(5):670-680(in Chinese)
[4] Baiguanysh S B, Mirmanov A B, Alimbaev A S, et al. Implementation of PPM Modulation and Demodulation Using NI Digital Electronics FPGA Board[C]//International Siberian Conference on Control and Communications, 2015
[5] Lou S, Gong C, Wu N, et al. Joint Dimming and Communication Design for Visible Light Communication[J]. IEEE Communications Letters, 2017, 21(5):1043-1046
[6] Pham H T T, Chu D B, Dang N T. Performance Analysis of Spatial PPM-Based Free-Space Optical Communication Systems with Gaussian Beam[C]//International Conference on Advanced Technologies for Communications, 2014
[7] 周田华, 何宁, 敖发良. 水下光通信PPM数字接收机的DSP实现[J]. 光学技术, 2006, 32(Suppl 1):607-609 Zhou Tianhua, He Ning, Ao Faliang. The Realization of PPM Digital Receiver with DSP in Underwater Optical Communication[J]. Optical Technique, 2006, 32(Suppl 1):607-609(in Chinese)
[8] Fu X, Chen G, Tang T, et al. Research and Simulation of PPM Modulation and Demodulation System on Spatial Wireless Optical Communication[C]//Photonics and Optoelectronic, 2010:1-5
[9] Abaza M R, Mohammed N A, Aly M H. BER Performance of M-Ary PPM Free-Space Optical Communications with Channel Fading[C]//High Capacity Optical Networks and Enabling Technologies, 2012
[10] Roberts I, Kahn J M. Efficient Discrete Rate Assignment and Power Optimization in Optical Communication Systems Following the Gaussian Noise Model[J]. Journal of Lightwave Technology, 2017(20):4425-4437 |
|
|
|
|
|
|
|
