matlab基于白光LED的室内可见光通信系统研究

摘要室内可见光无线通信技术是随着白光发光二极管(Light-Emitting Diode LED)照明技术的发展而兴起的无线光通信技术。白光LED既拥有节能性好、使用寿命长、可靠性高，响应时间短等优点，又可以在构建室内可见光无线通信系统的同时兼顾照明。22398
首先分析对比了国内外白光LED可见光通信研究历史、现状以及趋势，对基于白光LED的室内可见光通信系统的关键技术进行了讨论。对白光LED的内部结构及其发光机理,以及在其用于通信时的物理特性做了深入分析。其次用matlab软件对室内光照度的分布进行了仿真，通过优化参数，得到了最佳4阵列LED光源的照明布局。并提出了9阵列和16阵列两种优化方案,来解决4阵列光源中心照度不足的问题。然后对VLC系统的收发电路进行了设计。最后选取了二进制启闭键控(On-Off Keying OOK)调制编码方式进行了可行性论证，使用System View软件仿真，并对仿真结果进行了分析，验证了OOK调制编码在低速传输时能很好的进行可见光通信。
关键词白光LED 可见光通信光源模型 OOK调制编码
毕业论文设计说明书（论文）外文摘要
Title    The research of indoor visible light wireless communication system based on white LEDs
Abstract
Recently，the indoor visible light wireless communications technology is emerged companied with the blooming white light-emitting diode(LED) lighting technology．Thanks to the white LED's excellent properties such as low power consumption，long lifetime，high reliability and short response time，it is possible to upgrade the indoor white LED illumination source to a wireless optical communication system.
Analyzed and compared domestic and foreign , indoor and outdoor visible light communication Technology history, current situation and trends，the dissertation discussed the key technologies of communication system based on white LED array light source. We do a in-depth analysis on white LED's structure and lighting principle, including its physical characteristics when used as a communication source. Then we build a model to calculate the luminosity distribution of the white LED light source，and then find out the best lighting layout of white LEDs through numerical simulate．Then another two light models with 4 and 9 LEDs were offered to resolve the problem of lacking central luminance in 4 LEDs system. And the transceiver circuit of VLC systems was designed. Finally, the OOK modulation encoding mode is chosen to do a feasibility study. It was carried out that that the OOK modulation coding mode can do pretty well in visible light communication in low-speed transmission .
Keywords white LED visible light communication light source model the OOK modulation coding mode
目   次
1 绪论    1
1.1 光通信系统概述    1
1.2 几种无线光通信技术的比较    1
1.3 本论文的主要内容    4
2 室内可见光通信系统    6
2.1 室内VLC系统的组成    6
2.2 室内LED可见光通信关键技术    7
2.3 室内可见光通信的国内外研究发展动态    8
3 LED工作特性和布局设计    11
3.1 白光LED发光原理    11
3.2    白光LED工作特性    12
3.3    室内灯光布局    15
4    室内可见光通信的系统设计    29
4.1 发射端电路设计    29 matlab基于白光LED的室内可见光通信系统研究:http://www.751com.cn/tongxin/lunwen_15009.html