|
|
本文概括分析无线光谱的特性,阐述无线光通信的通信特点及原理。对目前适合紫外光通信的开关键控调制OOK,脉冲位置调制PPM、差分脉冲位置调制DPPM、数字脉冲间隔调制DPIM、双头脉冲间隔调制DH-PIM以及等长脉冲间隔调制FDPIM等多种调制解调技术进行分析对比。通过Matlab对各种调制技术进行仿真测试得出各种调制解调技术的平均光功率、传输容量、传输速率、误码率等通信性能对比图并得出结论。
课题以对室内可见光通信系统的基础理论研究为基础，针对室内可见光通信系统的特定应用目的或目标提出具体有效的技术途径和方法，开发出基于室内可见光通信可用于全天候照明场所的语音信息广播、可用于考场等需要保密通信场所的听力广播和能向智能终端发送语音、文字、图像、视频等信号的可用于飞机、会议厅、餐厅等特殊场所的信息通告系统，并对室内可见光通信应用系统的实物进行产品安装和调试，拓宽室内可见光通信系统的应用范围，为室内可见光通信的实际应用打下坚实基础。
关键词：可见光；通信；光通信；调制调解；Matlab
In this paper，the characteristics of wireless spectrum are analyzed，and the communication characteristics and principles of wireless optical communication are expounded. A variety of modulation and demodulation techniques，such as switching keying modulation OOK，pulse position modulation PPM，differential pulse position modulation DPPM，digital pulse interval modulation DPIM，dual-head pulse interval modulation DH-PIM and equal length pulse interval modulation FDPIM，are analyzed and compared. The average optical power，transmission capacity，transmission rate，BER and other communication performance comparison diagrams of various modulation and demodulation technologies are obtained by Matlab simulation test.
Based on the basic theoretical research of the indoor visible light communication system，this paper puts forward a concrete and effective technical approach and method for the specific application purpose or goal of the indoor visible light communication system，and develops the information announcement system based on the indoor visible light communication system which can be used in the voice information broadcast of the all-weather lighting place，the listening broadcast which can be used in the examination room and the special place such as voice，text，image and video can be sent to the intelligent terminal. perimeter，and lay a solid foundation for the practical application of indoor visible light communication.
Keywords：visible light；communications；optical communications；modulation mediation；Matlab
目 录
