基于单载波调制的可见光通信传输系统建模与仿真摘 要可见光通信技术是近年来新兴的一种无线通信技术，利用白光 LED 的高速明暗闪烁来传输信息，使得 LED 兼有照明和通信的两大用途。白光不仅频谱很宽，而且这些资源的使用不需要经过授权。可见光通信技术又使得上网更加方便快捷，而且相比传统通信的建立基站，要更方便，更容易搭建和拆卸。综上，研究可见光通信技术意义重大。为研究可见光通信，本文先研究了 LED 的发光机理和主要特性。由于单载波避免了多载波系统的在各相位相同时的最大瞬时电功率与平均电功率的比值(PAPR)很大的问题，这样在设计中可以采用更经济高效的功率放大器，所以本文主要研究了基于 PPM.PAM 等单载波调制技术的可见光通信建模及仿真，并通过仿真分析了 PPM.PAM 在高斯白噪声及非成像增益基础上的误码性能。关键词：可见光通信；单载波调制；LED 误码性能；调制性能ABSTRACTVisible light communication technology is a new wireless communication technology in recent years. It makes use of the high speed light and dark flicker of white light LED to transmit information, which makes LED have both lighting and communication applications. White light not only has a wide spectrum, but also does not require authorization to use these resources. The combination of visible light communication technology and power line technology makes the wiring of visible light communication more convenient, compared with the traditional communication base station, it is more convenient to set up and disassemble the visible light communication technology, and the combination of visible light communication technology and powerdy visible optical communication, this paper first studies The line technology makes it more convenient to set up and disassemble the visible light communication. In summary, the study of visible light communication technology is of great significance. In order to stuluminescence mechanism and main characteristics of LED were investigated. Si...
