基于大气激光通信的综合业务通信平台设计与实现

发布时间：2018-05-19 22:02

本文选题：大气激光通信 + 现场可编程门阵列　；参考：《南京邮电大学》2016年硕士论文

【摘要】：大气激光通信具有高带宽、抗干扰能力强、保密性好、架设灵活等优点,是一种运用前景非常广阔的通信方式,已成为当前的一个研究热点。本课题研究基于大气激光通信的综合通信平台设计,将大气激光通信和现有网络通信相结合,使现有网络通信增加新的通信手段,充分发挥各自的优势,有效地拓宽该通信平台的使用范围。论文首先研究了激光在空间中的传输原理和大气信道传输特性；研究了传统的数字复分接方式,并在此基础上提出了一种适用于本课题的多业务复分接方案；分析比较了常用的信道编码方式,确定了本课题采用的信道编码方案；分析比较了常用的大气激光通信脉冲调制方式和本课题提出的一种压缩数字脉冲间隔调制方式；研究了大气激光通信系统的光源和光电探测器。在完成方案设计的基础上,使用FPGA技术完成了数字复分接模块、RS编译码器、DPIM和CDPIM调制解调器等功能仿真；最后搭建了基于大气激光通信的综合业务通信平台的硬件实验环境,并进行了功能测试。在总结相关理论和所做的工作之后,论文指出了该系统中所存在的问题和所需改进的工作。
[Abstract]:Atmospheric laser communication has many advantages, such as high bandwidth, strong anti-jamming ability, good confidentiality, flexible erection and so on. It is a kind of communication mode with a very broad application prospect, and has become a research hotspot at present. This paper studies the design of integrated communication platform based on atmospheric laser communication, combines atmospheric laser communication with existing network communication, makes the existing network communication add new means of communication, and gives full play to their respective advantages. Effectively widen the scope of use of the communication platform. Firstly, the principle of laser transmission in space and the transmission characteristics of atmospheric channel are studied, the traditional digital demultiplexing method is studied, and a multi-service demultiplexing scheme suitable for this subject is proposed. The common channel coding methods are analyzed and compared, and the channel coding schemes used in this paper are determined, and the usual atmospheric laser communication pulse modulation methods and a compressed digital pulse interval modulation mode proposed by this subject are analyzed and compared. The light source and photodetector of atmospheric laser communication system are studied. On the basis of the scheme design, the digital multiplexing module (FPGA) is used to simulate the functions of the RS encoder and decoder and CDPIM modem. Finally, the hardware experiment environment of the integrated service communication platform based on atmospheric laser communication is built. And the function test was carried out. After summarizing the relevant theories and the work done, the paper points out the existing problems and the work to be improved in the system.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN929.1

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