水下无线光通信系统的研究和实现

发布时间：2018-05-31 16:48

本文选题：水下无线光通信 + 蓝光激光　；参考：《厦门大学》2014年硕士论文

【摘要】：与水声通信、水下电磁波通信相比,水下无线光通信技术具有带宽高、速度快、容量大、抗干扰能力强、保密性好等优点。作为一个虽然较新但应用前景广阔的研究方向,水下无线光通信正逐渐获得国内外研究者越来越多的关注。本研究课题的提出正是因为水下无线光通信具有广阔的应用前景,课题的内容主要是对水下无线光通信系统及其实现方案的研究,主要工作可以概述为： (1)将水下无线光通信与水声通信、水下电磁波通信进行比较,对水下无线光通信的优势进行介绍,并对国内外有关水下无线光通信特别是水下无线光通信系统的实现技术的发展概况进行分析。 (2)基于水下无线光通信系统模型,对水下无线光通信系统的关键技术：系统光源的选择,信道编码技术,光调制技术,光信号接收处理技术,光信号的跟踪、捕获、瞄准技术以及通信信道的研究等进行分析介绍。 (3)从光源的选择、信道编码技术、光调制技术、光信号接收处理技术等关键技术入手,对本课题所要设计的水下无线光通信系统进行分析。系统光源选择能够实现TTL调制的蓝光LD；信道编码方式选择在码字长度不长的情况下也能有较好纠错性能而且算法成熟硬件实现简单的RS码；光调制技术选用通信带宽使用率、光功率利用率适中,信号同步方便,硬件实现简单的DPIM调制算法；光信号接收处理模块选用硅基光电二极管为光电转换装置并选用性能优异的集成电路芯片完成信号处理电路的设计。 (4)使用水槽对所设计的水下无线光通信系统进行验证,实现基本的语音通信功能。
[Abstract]:Compared with underwater acoustic communication and underwater electromagnetic wave communication, underwater wireless optical communication technology has the advantages of high bandwidth, high speed, large capacity, strong anti-interference ability, good confidentiality and so on. As a relatively new but promising research direction underwater wireless optical communication is getting more and more attention from researchers at home and abroad. This research topic is put forward precisely because underwater wireless optical communication has broad application foreground, the main content of the subject is the research of underwater wireless optical communication system and its realization scheme. The main work can be summarized as follows: 1) compare underwater wireless optical communication with underwater acoustic communication, underwater electromagnetic wave communication, and introduce the advantages of underwater wireless optical communication. The development of underwater wireless optical communication system, especially the underwater optical communication system, is analyzed in this paper, which is based on the model of underwater wireless optical communication system. The key technologies of underwater wireless optical communication system are the selection of system light source, channel coding technology, optical modulation technology, optical signal receiving and processing technology, optical signal tracking, acquisition, The aim technology and communication channel research are analyzed and introduced. The key technologies such as the choice of light source, channel coding technology, optical modulation technology, optical signal receiving and processing technology, etc., are introduced. The underwater wireless optical communication system designed in this paper is analyzed. The system light source selects the blue light LDD which can realize TTL modulation, the channel coding mode can also have better error correction performance when the length of codeword is not long and the algorithm has mature hardware to realize simple RS code, the optical modulation technology chooses the rate of communication bandwidth utilization, The optical power utilization is moderate, the signal synchronization is convenient, and the DPIM modulation algorithm is simple in hardware. In the optical signal receiving and processing module, the silicon based photodiode is used as the photoelectric conversion device and the excellent integrated circuit chip is selected to complete the design of the signal processing circuit. The basic voice communication function is realized.
【学位授予单位】：厦门大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN929.3

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